PCB Manufacturing Knowledge, Processes & Insights
A detailed look into PCB fabrication methods, process control, materials, and technologies shaping modern board manufacturing.
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Fabrication Processes
Technical Guidance: Mouse Bite Panelization Guide
The conventional method of panelization uses V-grooves. However, for irregularly-shaped boards or special requirements (such as JLCPCB's economic SMT assembly), mouse bite panelization, which resembles postage stamps on an envelope, is required. PCBs panelized using this method are called "mouse bite panels" or "mouse bite connections". Mouse bite panelization can be referred to as "universal panelization." As long as there is a position to add mouse bites, boards of various shapes can be interconnect......
Mar 04, 2024
Fabrication Processes
Technical Guidance: V-Cut Panelization StandardsNov 02, 2023Fabrication Processes
Technical Guidance: Character Design SpecificationsOct 25, 2023Design for Manufacturing
Castellated PCBs: Introduction and Design RequirementsMay 10, 2023Design for Manufacturing
The Ultimate Guide to PCB Panelization: Tools and TechniquesJul 28, 2023
Latest Posts
Fabrication Processes
Technical Guidance: Mouse Bite Panelization Guide
The conventional method of panelization uses V-grooves. However, for irregularly-shaped boards or special requirements (such as JLCPCB's economic SMT assembly), mouse bite panelization, which resembles postage stamps on an envelope, is required. PCBs panelized using this method are called "mouse bite panels" or "mouse bite connections". Mouse bite panelization can be referred to as "universal panelization." As long as there is a position to add mouse bites, boards of various shapes can be interconnect......
Nov 10, 2026
Design for Manufacturing
Using Via-in-Pad Technology: What You Need to Know, Design Guidelines, and More…
In the world of multi-layer PCB (Printed Circuit Board) design, vias are essential parts that connect different layers of a board. As electronic devices become more compact and complex, designers must employ advanced technologies to optimize board space and performance. One such technology is via-in-pad technology, which has become increasingly popular in high-density and high-performance PCB designs. This article explores the essentials of via-in-pad technology, including guidelines for its implement......
Nov 10, 2026
Design for Manufacturing
Castellated PCBs: Introduction and Design Requirements
With the rapid development of electronic technology, electronic products are moving towards miniaturization, portability, multi-functionality, high integration, and high reliability.Consequently, printed circuit boards (PCBs) are frequently designed to integrate pre-existing, off-the-shelf modules. For example, IoT Bluetooth modules or NB-IoT modules, which are indispensable communication modules, can be soldered onto PCBs just like chips. These carrier boards are characterized by their small size and......
Nov 10, 2026
Fabrication Processes
Technical Guidance: V-Cut Panelization Standards
For boards with regular rectangular shapes, V-cut (V-scoring) panelization is an efficient method. This process involves cutting V-shaped grooves of a specific depth on both sides of the panel along the board boundaries, leaving a thin web of material (typically about 1/3 of the board thickness) that allows easy manual separation after SMT assembly. After separation, minor thread-like fibers or rough edges may remain and can be lightly scraped off. Due to material expansion and cracking during depanel......
Nov 10, 2026
Design for Manufacturing
How to Run a Design Rule Check (DRC) for Your PCBs
Any time you design a PCB, and you want to turn it into a real product, you will have to make sure the design obeys all the constraints within the standard PCB manufacturing process. These constraints in the PCB design are known as Design rules and to check these rules in a CAD software we have to run the DRC(Design Rule Check) algorithm. The ever-increasing complexity of boards has made it nearly impossible to carry out the design rule verification process manually, so designers have to program the r......
Nov 10, 2026
Fabrication Processes
How Laser-Made PCBs Are Used in Rapid Prototyping
Key Takeaways Speed & Precision: Digital lasers enable 24-hour quick-turn HDI and FPC prototyping without mechanical tooling. LDI Patterning: Replaces physical photo-films to deliver precise circuit traces down to 2/2 mil. HDI Microvias: UV/CO2 lasers drill 0.075–0.15 mm blind vias (1:1 aspect ratio) for 1+N+1 to 3+N+3 stackups. Laser Profiling & Stencils: Achieves ±0.05 mm FPC cut accuracy and ±0.003 mm LPKF stencil aperture precision. Laser DFM: Maintain ≥ 0.30 mm copper clearance on FPCs and ≥ 0.07......
Nov 09, 2026
Fabrication Processes
A Beginners Guide to Tented vs Untented Vias
Via’s are important, If working at high speed design and HDI boards then they become super important. Choosing a type of via during PCB manufacturing matters. Via’s are basically joining two or more layer traces together. Shape, size and track length guidelines became more interesting at high frequency and high speed signals. Today in this article we will explore a fabrication side, the decision to use tented or untented vias. This beginner-friendly guide explains what tented vias are, the differences......
Nov 09, 2026
Quality & Reliability Testing
PCB Testing Methods: A Comprehensive Guide to Testing and Characterizing PCBs
Key Takeaways PCB testing helps identify manufacturing defects, verify electrical connections, and ensure product quality. Different testing methods serve different purposes: AOI and X-ray detect visual and hidden defects, while Flying Probe and ICT identify electrical issues. Functional and reliability testing help evaluate circuit performance under specific operating conditions. Combining appropriate inspection and testing methods improves quality control across PCB fabrication and PCBA assembly. JL......
Nov 06, 2026
Quality & Reliability Testing
How PCB Thermal Cycling Tests Reveal Manufacturing Reliability
Key Takeaways Exposes Hidden Faults: Thermal expansion opens tiny cracks, catching via failures that room tests miss. Expansion Mismatch Stress: Heat differences weaken vias and solder joints over time. Standardized Testing: Follows IPC and JESD rules, failing when resistance increases. Process Prevention: High Tg materials, thick copper, and filled vias boost board life. Destructive Test: Consumes board life, so tested samples must be scrapped. A PCB thermal cycling test can detect faults that a room......
Nov 05, 2026
Quality & Reliability Testing
Why PCB Inspection Microscopes Matter in Electronics Manufacturing
Key Takeaways Precise Faults: ICT tests individual components to report exact pin-level failures. Layout-Driven: Coverage relies on test pad size, pitch, and component clearance. Speed vs. Tooling: Bed-of-nails tests in seconds; flying probe requires no custom fixture. Guarded Isolation: Isolates components from parallel paths to catch early defects. Layered QA: Pairs with AOI and AXI for full quality coverage. A PCB inspection microscope earns its place on a production line because the costliest defe......
Nov 03, 2026
Fabrication Processes
Flex PCB Fabrication: Process, Materials, Design Rules & Cost
Many of the basic steps in rigid PCB fabrication also apply to flexible PCB fabrication. However, it is made with thin polyimide or PET films that can swell or shrink during processing due to moisture and temperature changes. These material attributes bring further complexities to considerations of layer alignment, coverlay openings, and bend-zone design. For instance, if there's not enough room for adhesive flow in a coverlay opening, or if a via falls in a bend zone, manufacturing defects or assembl......
Nov 02, 2026
PCB Sourcing & Procurement
Flex PCB Manufacturers for Compact Electronics: Sourcing Guide
When choosing a flex PCB manufacturer for your compact electronics application, be sure to consider not only their maximum trace density, maximum stackup thickness, maximum bend radius, and stiffener thickness, but also whether they routinely build such parts. Since a design based on the manufacturer's best-case fabrication limits may be very tight in terms of production yield and/or dimensional tolerances, and long-term reliability, particularly in compact devices where space may be limited and repea......
Nov 02, 2026
Design for Manufacturing
Implications of border lines and 3D footprint lines on Mechanical Layer 1
Key Takeaways Mastering Mechanical Layer 1 is essential for accurate PCB manufacturing. Always place the complete board outline, mounting holes, and irregular slots on Mechanical Layer 1 (GM1), as JLCPCB prioritizes the lowest-numbered Mechanical Layer while ignoring KEEP-OUT and higher Mechanical Layers. 3D footprint lines serve only as design references and will not be fabricated. Following these layer priority rules and best practices ensures correct board dimensions, proper slot formation, and avo......
Oct 30, 2026
Design for Manufacturing
The Role of PCB Test Fixtures in High-Volume Manufacturing
In high-volume manufacturing of Printed Circuit Boards (PCBs), quality, efficiency, and reliability are paramount. One of the most crucial tools in achieving these goals is the PCB test fixture. These fixtures play a vital role in ensuring that PCBs meet the required performance standards before they are integrated into electronic devices. This article delves into the importance of PCB test fixtures, their types, and how they contribute to the efficiency of high-volume manufacturing. Specialized and c......
Oct 30, 2026
Design for Manufacturing
SMT or Through Hole Technology？Which is Better for Your Project？
When designing and manufacturing electronics, one of the most important steps is selecting the appropriate assembly method. Nowadays we have through-hole technology and surface mount technology, which become the industry standards and are the two main approaches. The surface-mount technology (SMT) uses components that are perfectly aligned with the PCB surface. On the other hand through-hole technology (THT) uses leads that are placed into pre-drilled holes in the PCB and thereafter soldered. Consider......
Oct 30, 2026
Fabrication Processes
Smart PCB Array Design for Higher Yield and Lower Production Costs
Key Takeaways Smart PCB array design is a critical strategy for achieving higher manufacturing yield and significantly lower production costs. By optimizing panelization with proper board spacing, V-scoring, tab routing, and mouse bites, designers can dramatically improve material utilization by 20-30%, enhance production throughput, and simplify handling and depaneling while minimizing mechanical stress and defects. Effective use of fiducials and careful component clearance further ensures high-quali......
Oct 29, 2026
Quality & Reliability Testing
How Sustainable Materials and Expert Manufacturing Ensure RoHS Compliant PCBs
Have you ever experienced that a finished shipment of products was detained at the EU customs due to a single component on the board not passing the RoHS screening? It is higher than most engineers think, and the financial blow is far bigger than the impounded goods. Wasted time, remodeling expenses, and a compliance audit that is capable of halting your whole product introduction, that is the actual cost of doing RoHS wrong. The point is as follows: RoHS-compliant PCBs cease to be a checkbox exercise......
Oct 29, 2026
PCB Sourcing & Procurement
Quick Turn PCB: How to Get High-Quality Prototypes Fast
Printed Circuit Boards (PCBs) are a vital part of modern electronics, and the demand for faster and more efficient development made a quick turn PCB services extremly important. In this article, we will discuss what quick turn PCB is, its importance, the lead time for JLCPCB's quickturn PCB fabrication, how quick turn PCB can help businesses, and how to choose a good quick turn PCB manufacturer. What is Quick Turn PCB? Quick turn PCB refers to the process of manufacturing and delivering PCBs within a ......
Oct 29, 2026
Design for Manufacturing
PCB temperature: Tips regarding improving the thermal management of PCBs
Thermal management is of utmost importance while designing PCBs. This is because the temperature of PCBs can guarantee the reliability, performance, and longevity of PCBs and the electronic equipment of which they are an integral component. Thus, enhanced Printed Circuit Board heat management is a necessity for reliable operation and to protect against damage to electronic components. In the upcoming chapter, we will discuss several approaches to strengthen PCB temperature management. Reasons of heat ......
Oct 29, 2026
Quality & Reliability Testing
Ensuring Superior Solderability: The Critical Role of Testing in Reliable PCB Production
Key Takeaways Core Purpose: Verifies solder wetting before assembly to prevent yield drops and joint failures. Destructive Test: Per J-STD-002, tested components and coupons cannot be reused in production. Pass Standards: Requires 95 percent solder coverage on leads and 80 percent on exposed thermal pads. Key Defects: Catches non-wetting (exposed metal), dewetting (solder pulling back), and black pad on ENIG. DFM Prevention: Use thermal relief, keep silkscreen off pads, and select the right surface fi......
Oct 29, 2026
Quality & Reliability Testing
Solder Joint Inspection in PCB Manufacturing : A Complete Guide to Catching Defects Early
Key Takeaways Solder Joint Inspection is critical in modern PCB manufacturing to catch defects early and ensure product reliability. By combining Solder Paste Inspection (SPI), 3D AOI for visible joints, and X-ray for hidden BGA/QFN issues, manufacturers can effectively detect common defects such as bridging, cold joints, tombstoning, and head-in-pillow. Following IPC-A-610 standards with a layered inspection strategy significantly reduces field failures while improving first-pass yield. JLCPCB’s prof......
Oct 29, 2026
Fabrication Processes
Why Accurate NPTH Design Matters for Reliable PCB Manufacturing
Key Takeaways NPTH are mechanical holes (no copper plating) used for mounting, alignment, and tooling. Poor NPTH design often causes PCB cracks during assembly or screw tightening. Follow key rules: ±0.08 mm tolerance, ≥0.5 mm diameter, 0.2–0.3 mm copper clearance. Keep adequate material around edge holes and clearly mark NPTH in fabrication files. Proper NPTH design + DFM checks ensure reliability from prototype to mass production. Ever get a slight crack in a finished PCB when putting it into an enc......
Oct 29, 2026
Fabrication Processes
Gerber of PCB: A Comprehensive Guide
Introduction: Printed Circuit Boards (PCBs) are the backbone of modern electronics, serving as the platform on which components are mounted and interconnected. One of the most critical elements in PCB design and manufacturing is the Gerber file. Gerber files are the standard format used to communicate the design of a PCB to the manufacturer. These files provide precise information about the PCB layers, component placement, copper traces, and more. Understanding Gerber files is essential for anyone inv......
Oct 28, 2026
PCB Sourcing & Procurement
7 Must-Know Tips for Choosing the Right Flex PCB Supplier
Flexible PCBs provide immense design and engineering benefits thanks to their versatility. But to maximize their value, having the right manufacturing partner makes all the difference. Choose wisely, and you will be well-positioned to capitalize on the advantages of flex PCB technology for your application. This article provides a step-by-step guide to evaluating and selecting an optimal flexible PCB maker based on their competencies, quality control, materials, pricing, capacity and more. By approach......
Oct 28, 2026
Fabrication Processes
Electronic Board Manufacturing: Efficient Strategy and Quality Control Processes
Electronic board manufacturing is a critical process in the electronics industry, and the quality of the boards produced can significantly impact the performance and reliability of the final product. Therefore, it is essential to follow efficient strategies and quality control processes throughout the manufacturing process to ensure the highest quality of the boards. In this article, we will explore the various steps involved in electronic board manufacturing, including materials selection, design and......
Oct 28, 2026
Design for Manufacturing
Design for Manufacturing (DFM): A Comprehensive Guide for Optimizing Production
Maintaining quality while improving the manufacturing process is critically important in the competitive fields of electronics and industry. Design for Manufacturing (DFM) here comes in handy. DFM is a design tool stressing the simplicity of manufacturing during the product development stage. Early on manufacturing limitations help DFM to guarantee that goods are not only useful but also reasonably priced, dependable, and easily produced at large-scale production. This article covers the importance of......
Oct 28, 2026
Surface Finishes & Coating
Why Copper Oxidation Matters in PCB Design & How to Prevent It
Key Takeaways Copper oxidation is a critical concern in PCB design that directly impacts solderability, contact resistance, and long-term reliability. By understanding how oxidation forms and damages copper surfaces, designers can effectively prevent it through appropriate surface finishes (such as HASL, ENIG, and OSP), strategic solder mask application, and strict adherence to proper storage and handling practices per IPC-1601 guidelines. Protecting copper from oxidation ensures better assembly yield......
Oct 28, 2026
PCB Sourcing & Procurement
How to Build a Bulletproof Bill of Materials for Flawless PCB Production
Have you ever sent a PCB design to be assembled only to receive an email requesting why you have not provided a part number or the package has not been matched? In that case, you are already aware that a single slip in your bill of materials will bring a flawless board down. Take a small CH32V003-based dev board consisting of 29 components distributed on 11 different footprints on a 2-layer copper PCB. It has an MCU, USB-C input, 24MHz crystal, USB-to-TTL bridge, indicator LEDs, and programming/GPIO h......
Oct 28, 2026
PCB Sourcing & Procurement
The True Cost of Custom PCBs: Understanding the Factors that Affect the Bottom Line
Key Takeaways Optimize Layout & Size: Simplify circuit design and keep board size within 100mm x 100mm for basic promo rates. Stick to Standard Specs: Use 1.6mm board thickness and 1 oz copper weight to avoid material surcharges. Respect DFM Limits: Maintain trace width/spacing ≥ 5/5 mil and via drills ≥ 0.3mm to prevent fine-feature fees. Select Low-Cost Finishes: Choose HASL over ENIG for prototypes unless fine-pitch BGAs are required. Printed circuit boards (PCBs) are integral to modern technology,......
Oct 28, 2026
PCB Sourcing & Procurement
Crafting Success: Choosing the Right PCB Manufacturer for Hobbyist
As a PCB hobbyist or engineer, finding a reliable and professional PCB manufacturer is crucial to ensure the success of your projects. The right PCB manufacturer can provide you with valuable guidance, access to advanced manufacturing technologies, and the support needed to excel in the dynamic world of PCB design and manufacturing. In this article, we will explore key characteristics to consider when selecting a PCB manufacturer, with a focus on professional instruction, customization options, qualit......
Oct 28, 2026
Fabrication Processes
Best Practices for Successful Electronic Manufacturing
Key Takeaways Mastering best practices in electronic manufacturing — from optimized PCB design and DFM to rigorous testing, verification, and high-quality production — is essential for achieving reliable, cost-effective, and timely electronic products. By following proven methodologies, leveraging advanced tools like EasyEDA, and partnering with a trusted manufacturer such as JLCPCB, designers and engineers can significantly reduce errors, accelerate time-to-market, and ensure superior performance acr......
Oct 28, 2026
Quality & Reliability Testing
PCB Delamination Explained: Causes, Detection, and Prevention
Key Takeaways Causes: Moisture turns into steam during 260C reflow, causing layer separation under thermal expansion. Materials: High-temp lead-free builds require mid/high-Tg laminates instead of standard FR4. Detection: Surface blisters are visual, while internal voids need acoustic testing or microsectioning. Prevention: Protect bond strength using balanced copper, proper press profiles, and dry packaging. Fixes: Epoxy repair only works on minor surface defects; internal splits require board replac......
Oct 22, 2026
Quality & Reliability Testing
Key Benefits of In-Circuit Test in High-Yield PCB Manufacturing
Key Takeaways Precise Faults: ICT tests individual components to report exact pin-level failures without booting firmware. Layout-Driven: Coverage depends on layout rules like test pad size (0.9-1.0 mm), pitch, and clearances. Fixtures vs. Probes: Bed-of-nails runs in seconds for high volume; flying probes require zero tooling for prototypes. Guarded Accuracy: Guarding isolates components from parallel paths to detect bad values early and lower rework costs. Layered QA: Combining ICT with AOI and AXI ......
Oct 20, 2026
PCB Sourcing & Procurement
PCB Mount Techniques, Methods, and Best Practices
Key Takeaways SMT vs. THT: SMT fits micro-packages (down to 01005), while THT provides high mechanical strength for heavy components. Selective Wave DFM: Requires a 5mm keep-out zone around THT pads to protect bottom-side SMT parts from thermal shock. Mounting Hole Clearance: Keep a 0.5mm minimum clearance around screw heads on NPTH/PTH holes to prevent trace shorts. FPC Stiffeners: Use PI/FR4 stiffeners behind FPC pads with a 1.0mm edge clearance to prevent joint fatigue. Introduction In the electron......
Oct 13, 2026
Surface Finishes & Coating
Choosing the Right Surface Finish for Your PCB: An Overview of HASL, ENIG, OSP, Immersion Tin and Immersion Silver
Key Takeaways Lead-Free HASL: Best low-cost, RoHS-compliant finish for general PCB builds. ENIG: Superior flatness and 12+ month shelf life for fine-pitch BGAs. OSP: Ultra-flat, lowest-cost option for high-volume SMT (3–6 month shelf life). Immersion Silver: Ideal for high-frequency RF by eliminating nickel signal loss. Immersion Tin: Best for press-fit connectors and fine-pitch assembly. Printed Circuit Boards (PCBs) are essential components in the manufacturing of electronic devices ranging from sma......
Oct 08, 2026
Surface Finishes & Coating
Conformal Coating in PCB Technology: Benefits, Challenges, and Future Developments
If you're searching for conformal coating, you're likely looking for a reliable way to protect your PCB from moisture, dust, chemicals, or harsh environments. Choosing the right coating directly affects product reliability, performance, and lifespan. In this guide, you'll learn what conformal coating is, the main types available, and how to select the best option for your application. We'll also cover key benefits, application methods (manual, automated, and selective), as well as inspection, rework, ......
Sep 28, 2026
Fabrication Processes
Understanding SMT PCB Boards Technology: An Essential Component of Modern Electronics
Surface Mount Technology (SMT) has changed manufacturing of modern electronics. It has made designs and assembly methods more efficient. Many modern electronics depend on SMT PCB boards, which make it possible for circuit designs to be small and efficient. This is what today's technology needs. This article discuss about many types of SMT PCB boards, their uses, and the best methods for designing and assembling them. 1. What is an SMT PCB Board? Printed circuit boards called SMT PCB boards, use surfac......
Sep 28, 2026
Design for Manufacturing
Design for Manufacturing and Assembly: A Complete DFMA for PCB Design Guide
Key Takeaways DFMA covers both PCB fabrication and assembly: DFM addresses bare-board fabrication, while DFA addresses component assembly and related process constraints. The biggest decisions happen early: Package choice, layer count, and board outline are usually set well before Gerber export and become expensive to change later. Passing DRC does not guarantee a good footprint: Design rules can verify clearances and copper geometry, but they cannot confirm that a footprint matches the component data......
Sep 28, 2026
Quality & Reliability Testing
Why PCB Test Coupons Are Critical for Reliable Board Manufacturing
Key Takeaways Sacrificial Testing: Coupons allow destructive tests without harming active boards. True Process Mirror: They match the exact stackup and density to reflect panel quality. Clean Measurements: Straight lines enable precise TDR impedance and via inspection. Quality Shield: Coupon failures isolate flawed panels before shipping. A PCB test coupon is the one piece of your order that is intentionally destroyed. It rides in the panel border beside your boards, so it sees every drill, plating, a......
Sep 22, 2026
Design for Manufacturing
Get More From Every PCB Panel: Choosing the Right Panel Size
Key Takeaways Panel Drives Cost: Fabs price the whole panel, so maximizing utilization lowers per-board cost. 3 Panel Types: Distinguish raw sheets, fab working panels, and your delivery array. Keep Clearances: Reserve 5 mm process rails and 1–2 mm spacing around V-scores. Match Depaneling Method: Use V-cut (0 mm gap) for rectangles, tab routing for complex shapes. Test Both Orientations: Rotate boards 90° to find the best fit before ordering. PCB panel size is the one number on your order that you ne......
Sep 20, 2026
Quality & Reliability Testing
How to Master PCB Impedance Testing for High-Speed Designs
Key Takeaways Verification via TDR: Impedance testing uses Time-Domain Reflectometry (TDR) on test coupons to verify high-speed traces. Real-World Factors: Actual impedance is shifted by manufacturing variables, including trace undercut, solder mask, and pressed dielectric thickness. Design-to-Fab Loop: Use the manufacturer's exact stackup Dk values for layout and TDR reports to refine revisions within $\pm 10\%$ tolerance. An impedance test can be the difference between a USB 3.0 link that works reli......
Sep 15, 2026
Surface Finishes & Coating
PCB Gold Fingers: Why They Matter and How to Design Them
Key Takeaways PCB gold fingers provide reliable electrical and mechanical contact for PCBs that connect to external connectors or card slots. ENIG is suitable for general contact applications, while electroplated hard gold offers higher wear resistance for repeated insertion and removal. Gold fingers should remain fully exposed, with solder mask and silkscreen kept away from the contact area. Proper chamfering and gold finger orientation are essential to ensure smooth insertion and prevent damage duri......
Sep 11, 2026
Design for Manufacturing
Free DFM Tool: Enhancing PCB Design Efficiency
Design for Manufacturability (DFM) guarantees that the design is best suited for manufacturing and assembly, it is a key process in printed circuit board (PCB) design. Using a Free DFM Tool will improve accuracy and efficiency, by greatly streamlining this process. The advantages of Free DFM Tools, their place in PCB design, and how they could affect your projects are discussed in this article. We will also discuss some typical problems and fixes related to using these tools, highlighting their applic......
Sep 10, 2026
Design for Manufacturing
Understanding the Importance of DFM Analysis in PCB Design
Design for Manufacturing (DFM) analysis helps you on whether a printed circuit board (PCB) is fit for manufacturing, assembly, and sales. Early in the planning process, it looks for and fixes any possible problems arising throughout production. This will increase manufacturing efficiency and help to save expenses. DFM analysis is quite vital in the complex world of electronics, where even little design errors can create delays costing a lot of money. This article discusses the different types of DFM i......
Sep 10, 2026
PCB Sourcing & Procurement
What Is a Protoboard and Why Engineers Use It
Key Takeaways Core Concept: Protoboards use a 2.54 mm perforated copper grid for hand-soldered, semi-permanent circuit prototypes. Protoboard vs. Breadboard: They offer far better physical durability and joint stability than solderless breadboards. Key Limitations: Manual wiring creates high parasitic noise, lacks impedance control, and supports no direct SMD chips. JLCPCB Upgrade: Custom PCBs provide 0.3 mm drill accuracy, 5 mil traces, multi-layer stackups, and heavy copper. I used protoboards when ......
Sep 09, 2026
Fabrication Processes
How to Choose the Right Prepreg Material for Reliable Multilayer PCB
Have you ever wondered what makes all those copper layers stick to a cross-section of a multilayer PCB? Prepreg material is the answer, and it is of much more importance than most engineers think it is. Choose the prepreg selection wrong, and you are predetermined to delamination, impedance drift, and long-term reliability problems. Prepreg is not only glue. It is a designed composite that determines your dielectric separation, dictates your impedance, affects signal loss, and determines your board be......
Sep 09, 2026
Design for Manufacturing
Thermal Vias in PCB Design for Heat Management
Thermal vias are specialized vias designed to transfer heat from one layer of a PCB to another. These vias are placed near heat-generating components to create a thermal pathway, helping to dissipate heat and reduce the risk of overheating. They are often used with heat sinks, thermal pads, or copper planes to enhance their effectiveness. They are simply plated through holes (PTHs) that are located under a surface-mounted heat source component in a printed circuit board (PCB) that allow heat transfer.......
Sep 09, 2026
Design for Manufacturing
The Ultimate Guide to PCB Panelization: Tools and Techniques
Printed circuit boards (PCBs) are the backbone of modern electronics. One critical aspect of PCB manufacturing is panelization — the process of arranging multiple PCBs onto a single larger panel for efficient manufacturing and assembly. This technique allows multiple boards to be processed simultaneously, significantly reducing costs and improving production efficiency. In this article, we will provide a comprehensive guide to PCB panelization, covering the tools and techniques required for successful......
Sep 09, 2026
Design for Manufacturing
Common Design Issues and Recommendations for PCB Optimized Design
To help customers avoid common issues that may arise during the PCB production process due to design problems, we' ve summarized the most frequent cases below. These issues have been detailed on our website to assist customers in identifying and addressing them more effectively. The following points include important design considerations and suggested modifications: 1. Missing Slots, Cutouts, Millings and V-Cut Issue: Missing Slots, Cutouts, Millings and V-Cut due to improper design. Recommendation: ......
Sep 09, 2026
Surface Finishes & Coating
Comparing HASL and ENIG Surface Finishes for PCBs
Selecting the right surface finish for a printed circuit board (PCB) is crucial to ensuring its performance, reliability, and longevity. Two of the most commonly used finishes are Hot Air Solder Leveling (HASL) and Electroless Nickel Immersion Gold (ENIG). Each of these surface finishes offers distinct advantages and disadvantages, making them suitable for different applications. In this article, we will compare HASL and ENIG to help you determine which finish is best suited for your PCB project. What......
Sep 09, 2026
Fabrication Processes
Via Filling Explained: Key Techniques, Benefits, and Solutions for High-Performance PCBs
Key Takeaways Via filling completely fills plated through-holes and microvias with epoxy or conductive copper paste, followed by planarization and copper capping (POFV). It eliminates voids, solder wicking, and thermal/mechanical issues while enabling reliable via-in-pad designs. Benefits include superior heat dissipation (up to 8 W/m·K), better signal integrity, higher mechanical strength, and improved assembly yields. JLCPCB provides free non-conductive filling + POFV on 6+ layer boards. Ideal for H......
Sep 09, 2026
Fabrication Processes
How Fiducial Markers Guarantee Perfect Alignment in Professional PCB Fabrication
Today, the most sophisticated pick-and-place machine can place a 0.5 mm pitch QFP on its footprint, board after board, thousands of times, and never miss. It is not only a matter of expensive cameras or high-quality servos, but it begins with a little, very small copper dot, simply hanging there in the corner of your PCB. That dot represents a fiducial marker, and without it, even the smoothest SMT line would be laying components in the dark. The unrecognized heroes of automated assembly are the fiduc......
Sep 09, 2026
Design for Manufacturing
PCB File Formats
Ordering printed circuit boards (PCBs) involves providing precise and detailed information about the design and specifications of the board. This is why specific PCB file formats are necessary. Manufacturing can only take place successfully with a completed PCB file. Designing a PCB and communicating those design decisions depends on files such as circuit schematic designs, Bill-of-Materials, PCB layouts, and stack-up design information. To ensure interoperability among various electronics design soft......
Sep 09, 2026
PCB Sourcing & Procurement
Breaking Down PCB Pricing: How is the Cost Determined
PCB quote packaging involves gathering and organizing all the necessary details to estimate the cost of manufacturing a PCB. This process includes not only design specifications but also material selection, manufacturing methods, and engineering considerations. It goes beyond a simple financial estimate and provides a thorough engineering analysis to ensure the quote is accurate, feasible, and optimized for production. Every aspect affecting production such as material type, size, complexity, and prod......
Sep 09, 2026
Surface Finishes & Coating
Avoid PCB Assembly Failures: Mastering Solder Mask Expansion Rules and Best Practices
Solder mask protects copper traces and pads from oxidation, bridges, and contamination during assembly. Incorrect solder mask expansion—the clearance around features where mask is pulled back—leads to defects like shorts or exposed copper. Engineers must set expansion values precisely to ensure reliable soldering and long-term performance. Introduction: Why Solder Mask Expansion is Critical for PCB Reliability Understanding Solder Mask and Expansion Basics Solder mask is a polymer layer applied over t......
Sep 08, 2026
Fabrication Processes
Technical Guidance: Character Design Specifications
To facilitate component assembly, future maintenance, and traceability of PCB manufacturing information (such as manufacturer, production date, batch number, etc.), various character markings are typically silk-screened onto the PCB. These include component designators, polarity marks, test point labels, company logos, and production traceability information. Traditional PCB character silk-screening uses the screen printing process, hence the term “silk-screen characters.” High-definition characters a......
Sep 08, 2026
Fabrication Processes
Step-by-Step Guide to the Printed Circuit Board Manufacturing Process
Key Takeaways Core Role: PCBs provide the physical foundation and electrical connections for modern electronics. Multi-Step Process: Manufacturing spans design imaging, substrate creation, inner/outer layer etching, lamination, and surface finishing. Precision & Quality Control: Features micro-drilling (down to 100 µm) for layer connectivity, Automated Optical Inspection (AOI), and final electrical testing. Protection & Finish: Solder masks and surface finishes (e.g., ENIG, HASL) protect copper traces......
Sep 08, 2026
Surface Finishes & Coating
The Ultimate Guide to OSP Surface Finish in PCB Manufacturing: Advantages, Process, and Selection
Key Takeaways OSP (Organic Solderability Preservative) is a water-based, cost-effective PCB surface finish that deposits a 0.2-0.5μm organic film directly onto copper pads. Unlike metallic finishes such as ENIG or HASL, OSP provides superior surface flatness for fine-pitch SMT components at no extra process charge, making it ideal for high-density consumer electronics. However, OSP requires controlled handling and a limited assembly window (24-48 hours after opening vacuum packaging). It is best suite......
Sep 04, 2026
Fabrication Processes
An Inside Look at the Modern PCB Manufacturing Steps
key takeaways Early Defect Trapping: CAM DFM and AOI catch inner-layer opens and shorts before lamination seals the board. DFM Prevention: Automated checks catch acid traps, copper slivers, and clearance shortfalls early. Reliable Interconnects: Chemical desmear clears resin smear from hole walls to prevent thermal failure. 100% Net Testing: Flying probe or bed-of-nails systems test every net for opens and shorts before packing. IPC Compliance: Final QA verifies annular rings and plating thickness aga......
Sep 01, 2026
Fabrication Processes
Inside the Factory: A Breakdown of the PCB Manufacturing Process
Key Takeaways CAM Prep Prevents Errors: CAM verifies designs against real factory tolerances to catch bad drill files and board outline shorts before production. Material Selection Controls Heat: Standard FR4 softens near 130C, while high Tg options stay rigid at 170C for demanding thermal environments. Inner Layers Etch First: Cores must be etched and inspected before lamination, as internal traces cannot be reached after pressing. Plating Thickness Ensures Reliability: Holes need resin cleaning and ......
Aug 31, 2026
Fabrication Processes
Advanced PCB Via Filling Options for Superior Signal Integrity and BGA Layouts
Key Takeaways Prevents BGA solder wicking by sealing holes to stop solder from draining during reflow. Frees up routing space by using Type VII via-in-pad to eliminate dog-bone traces. Selects non-conductive resin for flat pads and copper-epoxy for heat transfer. Requires surface grinding to keep dimples under 25 microns for good paste printing. Uses cross-section coupons and flying probe tests to verify hidden fill quality. A PCB via is normally a hollow plated hole, but that open structure creates a......
Aug 26, 2026
Quality & Reliability Testing
Guardians of Quality: A Complete Walkthrough of PCB Inspection Standards
Key Takeaways Layered Defense: Combining AOI, AXI, ICT, and FCT covers all inspection blind spots. Paste Printing: Solder paste causes up to 60% of defects, making early checks vital. IPC Standards: IPC Class 3 tightens BGA void limits from 25% to 10%, raising costs. Thermal Balance: Equal layout heating balances reflow pull to prevent tombstoning. Design Control: Clear test pads and visible polarity marks ensure reliable automated checks. PCB inspection is not one check performed at the end of produc......
Aug 26, 2026
Surface Finishes & Coating
PCB Encapsulation: Design Rules, Material Selection, and Reliable Manufacturing
Key Takeaways Encapsulation vs. Potting: Potting uses a permanent shell; encapsulation produces a free-standing resin-coated module. Both deliver full environmental isolation. Encapsulation vs. Conformal Coating: Conformal coating is lightweight and reworkable but limited to mild environments. Encapsulation provides IP67/IP68 submersion-grade protection at the cost of repairability. Resin Selection: Epoxy offers rigidity and chemical resistance; polyurethane provides flexibility for thermal cycling; s......
Aug 11, 2026
Surface Finishes & Coating
Hard Gold PCB Finish: Achieving Exceptional Wear Resistance and Contact Performance
Surface finishes are not all the same thing, and this is obvious beyond mention when you are dealing with parts that are beaten against one another over and over. Hard gold. The most common finish used when PCBs must complete hundreds or even thousands of insert-and-remove operations before going out of service is essentially a hard alloy of gold electroplated over a nickel barrier coating. The prototypical piece of evidence that demonstrates why this is important is the edge connector, otherwise know......
Aug 08, 2026
Surface Finishes & Coating
Optimizing Plating Thickness for Superior PCB Durability and Performance
Key Takeaways Plating thickness directly determines PCB durability, via reliability, and current-carrying capacity. Minimum hole wall copper: 20 µm (Class 2) / 25 µm (Class 3) per IPC-6012. Thicker copper (2 oz) significantly improves thermal performance and mechanical strength. Uniform plating requires good aspect ratio and process control to prevent cracking. Proper surface finish selection and reliable manufacturing are essential for long-term performance. Why do two boards that are the same act di......
Jul 29, 2026
Fabrication Processes
The Smart Advantages of Rounded Corners in Modern PCB Design
Key Takeaways Rounded corners reduce stress concentration and prevent chipping, cracking, and delamination. They improve safety, handling, and perfect fit in enclosures with matching radii. Use R0.5–R1.0 mm for small boards, R1.0–R2.0 mm for standard designs. Internal corners must respect router bit limits (min. R0.5 mm); external corners are more flexible. Maintain 0.3–0.5 mm edge clearance and use CNC routing with mouse bites for panelization. No extra cost — highly recommended for reliability and p......
Jul 28, 2026
Fabrication Processes
How to Design and Manufacture Reliable Slot Holes in PCBs
Key Takeaways Slot holes are elongated openings ideal for flat pins, connectors, shields, and board alignment. Minimum sizes: 0.5 mm (plated) and 1.0 mm (non-plated); prefer rounded ends with length ≥ 2.5× width. Maintain proper annular ring, edge clearance, and DFM rules to prevent breakout and plating issues. Use overlapping drills for short plated slots and routing for longer ones. Good slot design greatly improves mechanical strength, thermal performance, and assembly reliability. JLCPCB’s precisi......
Jul 21, 2026
Fabrication Processes
How Beveled Edges Improve Reliability and Performance in Card Edge Connectors
Key Takeaways Beveled edges enable smooth insertion and protect gold fingers from wear in card edge connectors. Use 30° or 45° angles (45° is standard for most designs) with depth of 1/3 to 1/2 board thickness. They reduce insertion force, prevent plating damage, and improve long-term contact reliability. Proper beveling is critical for high-cycle applications like DDR modules and PCIe cards. Bevel edges came into my attention the first time a memory module that I designed scratched its own gold finge......
Jul 07, 2026
Design for Manufacturing
Why Tolerance Analysis Is Key to Reliable and Cost-Effective PCB Production
Key Takeaways Tolerance analysis bridges CAD perfection and manufacturing variations to ensure reliable PCB assembly. Focus on critical areas: annular rings, hole tolerances, trace/space, layer registration, and solder mask alignment. Apply Worst-Case, RSS, or Monte Carlo methods for effective tolerance stack-up. Proper analysis boosts yield, cuts respins and costs — start with JLCPCB’s DFM review. Have you ever sent a board to fabrication, which appeared flawless on the computer screen, but then foun......
Jun 30, 2026
Surface Finishes & Coating
Preventing Black Pad Defects: Ensuring Reliable ENIG Finish in Professional PCB Manufacturing
Key Takeaways Black Pad is caused by excessive nickel corrosion during the ENIG immersion gold step, leading to brittle solder joints and hidden BGA/QFN failures. Key prevention methods: tight chemistry control (temperature, pH, time), consistent phosphorus content, and regular bath monitoring. High-reliability alternatives: ENEPIG (lowest risk) or nickel-free finishes like Immersion Silver and OSP. Always source ENIG from manufacturers with strict process controls. Ever get a great-looking board, wor......
Jun 29, 2026
Fabrication Processes
How to Prepare Perfect Gerber Files for Flawless PCB Production
Key Takeaways Use RS-274X format and consistent millimeter units for all files. Always include complete layers: Copper, Solder Mask, Silkscreen, Board Outline, and NC Drill. Check your Gerbers in a viewer before uploading to catch errors early. Follow DFM rules: proper annular rings, solder mask expansion, and trace spacing. Use clear file naming and detailed fabrication notes. After spending weeks working on the perfect board layout, the routing is clean, the DRC passes, and you hit “export.” Two day......
Jun 27, 2026
Surface Finishes & Coating
Solder Mask Colors: Boost Your PCB Performance, Style & Reliability
Key Takeaways Solder mask color directly impacts AOI accuracy, thermal performance, and PCB reliability — it is not purely cosmetic. Green remains the industry benchmark for the highest manufacturing yields and fastest turnaround at no extra cost. White maximizes light reflection for LED applications, while black offers a premium aesthetic for high-end consumer products. Red and yellow provide superior visual contrast for prototyping, debugging, and safety-critical inspections. JLCPCB offers all seven......
Jun 16, 2026
Design for Manufacturing
Copper Balancing in PCBs: Achieving Optimal Performance and High Yields with JLCPCB
Key Takeaways Copper balancing strategically distributes copper across PCB layers to create uniform density, preventing warpage, uneven plating, inconsistent etching, and signal integrity issues. The ideal copper density target sits within the 40%–60% golden ratio, with mirrored layers maintaining density variation within 15%–20% per IPC-6012 standards. Copper thieving (dot patterns or crosshatch meshes) equalizes current density during electroplating without introducing parasitic capacitance on spars......
Jun 12, 2026
Fabrication Processes
How Etch Factor Control Ensures Precise Trace Width and Reliable PCB Performance
Key Takeaways Mastering etch factor control is essential for achieving precise trace width and reliable PCB performance. By understanding the etch factor formula and effectively managing undercut during the chemical etching process, designers and manufacturers can minimize trace width deviation, maintain accurate impedance, and ensure high-yield production — especially critical for fine-line, high-speed, and controlled-impedance designs. Ever designed a PCB with a perfectly calculated width for traces......
May 26, 2026
Quality & Reliability Testing
3D AOI Inspection Explained : How It Catches Defects That 2D Systems Miss
Key Takeaways 3D AOI Inspection has become essential in modern PCB assembly by using advanced height and volume measurement to detect critical solder defects that traditional 2D AOI systems routinely miss, such as lifted leads, insufficient solder, head-in-pillow, and component coplanarity issues. By delivering precise 3D data through structured light or Moire technology, it significantly reduces false calls, improves first-pass yield, and ensures long-term reliability according to IPC-A-610 standards......
May 20, 2026
Fabrication Processes
Border Layer Thickness: Impact on PCB Dimensions and V-Grooves
Key Takeaways The line width of the Border Layer has no impact on final PCB dimensions or V-groove (V-cut) characteristics. At JLCPCB, all routing and scoring operations reference the centerline of the Mechanical Layer outline, ensuring consistent board size with ±0.1mm precision and uniform 25° V-cuts regardless of whether you use 0.1mm or 1.0mm lines. Understanding this centerline principle allows designers to focus on visibility and clarity in EDA tools while achieving reliable, high-precision manu......
May 18, 2026
Surface Finishes & Coating
Comparing OSP Plating with Other PCB Surface Finishes
Key Takeaways OSP stands out as a cost-effective, ultra-flat, and environmentally friendly PCB surface finish with excellent solderability for fine-pitch components, making it ideal for high-volume consumer electronics. However, its short shelf life (3–6 months), sensitivity to handling and oxidation, and limited multi-reflow durability require careful storage and process control. When compared to HASL, ENIG, Immersion Silver, and Immersion Tin, OSP offers superior planarity and lower cost but trades ......
May 16, 2026
Design for Manufacturing
PCB Design : How to Resolve Short Circuit Defects Caused by HASL
Key Takeaways In high-density PCB designs, HASL frequently causes solder bridging and short circuits due to its uneven surface and molten solder flow, especially on fine-pitch and dense traces. The most effective solution is to switch to ENIG (Electroless Nickel Immersion Gold), which provides superior planarity, significantly reduces bridging risks, and improves assembly yield. By selecting ENIG for dense layouts, optimizing solder mask design, and running DFM checks, designers can effectively elimin......
May 15, 2026
Design for Manufacturing
Design Process of a Surface Mount PCB
Key Takeaways Mastering the surface mount PCB design process is essential for creating compact, high-density, and reliable electronic boards. This comprehensive guide walks through the complete SMT workflow — from schematic capture and component selection to optimized layout, precise routing, DRC/ERC verification, and Gerber file generation — enabling designers to achieve superior performance, better manufacturability, and cost efficiency compared to traditional through-hole methods. By following thes......
May 14, 2026
Fabrication Processes
Achieving Clean PCB Separation: The Benefits of Professional Depaneling
Key Takeaways Clean depaneling is a critical final step: a poor split can cause microcracks, trace/solder-joint damage, delamination, and rough edges. Choose the method early based on outline, material/thickness, component edge clearance, volume, and required edge quality—V-scoring for fast straight cuts, routing for complex shapes, and laser for fragile or edge-constrained designs—with IPC criteria guiding controls and inspection. Have you ever broken a PCB off a panel and found rough edges, small cr......
Apr 27, 2026
Design for Manufacturing
How to Avoid Shorts and Open Circuits in Dry Film Etching Process
When utilizing the dry film etching process, it is crucial to take precautions to prevent short circuits and open circuits in printed circuit boards (PCBs). JLCPCB emphasizes specific considerations to ensure the integrity and functionality of PCB designs. This article provides guidelines for maintaining adequate trace width and spacing as well as utilizing hatched copper pours effectively to avoid defects during the dry film etching process. Maintaining Adequate Trace Width and Spacing JLCPCB employs......
Apr 18, 2026
Surface Finishes & Coating
Copper Coin PCB : A Solution for Heat Dissipation
In the fast-evolving electronics industry, devices are becoming smaller, faster, and more powerful, while also coming in a compact size. Power is no longer a problem, but packing the device into a smaller form factor presents a serious challenge. Whether we are working on a power converter, LED lighting module, automotive ECU, or 5G communication device, the excessive heat reduces performance. It shortens the component lifespan. This is where Copper Coin-Embedded PCBs become a smart, modern solution f......
Apr 17, 2026
Design for Manufacturing
How to Set PCB Via Tenting in PCB Design Software
Introduction Via tenting refers to covering the via pads and holes with solder mask ink (also known as solder resist), preventing solder from adhering to the pads. This is a process widely used in most circuit boards. It's a critical part of PCB design, protecting the vias and enhancing the board’s durability and performance. In this guide, we'll show you how to configure PCB via tenting in commonly used software such as Altium Designer (AD) and Protel 99 to ensure your Gerber files meet the required ......
Apr 17, 2026
PCB Sourcing & Procurement
Why Specific File Formats Are Essential for Ordering PCBs
Ordering printed circuit boards (PCBs) involves providing precise and detailed information about the design and specifications. Without the right file formats, even the most brilliant PCB design can lead to manufacturing delays, costly errors, or complete production failure. This is why specific PCB file formats are necessary. Manufacturing can only proceed successfully with a complete set of production files, including schematic designs, Bill of Materials (BOM), PCB layouts, and stack-up information.......
Apr 16, 2026
Design for Manufacturing
FPC Panelization Design Standards and Requirements
FPC (Flexible Printed Circuit Board) panelization is the process of arranging multiple FPC boards onto a single panel for efficient production. Proper panelization is crucial for optimizing material utilization, reducing production costs, and ensuring product quality. JLCPCB recommends following these standards to achieve the best yield and compatibility with SMT processes. General Panelization Guidelines Irregularly Shaped Frames: For irregularly shaped FPC frames, consider using JLC's irregular pane......
Apr 14, 2026
Quality & Reliability Testing
Preventing PCB Warping: Best Practices for Design and Manufacturing
In the design and manufacturing process of electronic equipment, PCB (Printed Circuit Board) warpage is a common but troublesome problem. PCB warping not only affects the performance and reliability of the device but can also cause connectivity issues and other serious consequences. Therefore, it is crucial to understand how to prevent and resolve PCB warping. This article will explore some best practices in design and manufacturing to help you effectively prevent PCB warpage problems from occurring. ......
Apr 09, 2026
Design for Manufacturing
Enhanced PCB Design Efficiency with Mouse Bites
PCB design is a crucial aspect of electronics manufacturing, and optimizing the design can significantly enhance manufacturing efficiency while reducing costs and waste. One design element that can improve efficiency is the implementation of mouse bites. Mouse bites are small cuts or grooves made in a PCB to facilitate its separation into individual pieces during the manufacturing process. In this article, we will explore the role of mouse bites in PCB design, their advantages and disadvantages, desig......
Apr 08, 2026
Surface Finishes & Coating
Technical Guidance: Five Via Finishes: Exposed, Tented, Plugged, Epoxy and Copper Paste Filled
Definition and Universal Inspection Standards In response to customer requests, we have added the processes of "plugged vias," "epoxy-filled vias," and "copper paste filled vias," which can be selected in the ordering interface. Refer to the rules for via-in-pad filled vias (click here to view). When ordering a PCB there are generally five via covering options available: Untented (Exposed), Tented, Plugged, Epoxy-Filled & Capped, and Copper-Paste-Filled & Capped. Finish Type Appearance Key Advantages ......
Apr 08, 2026
Quality & Reliability Testing
PCB Cleanliness in Professional Manufacturing : Preventing Contamination and Ensuring Long-Term Reliability
In the construction of PCBs, the boards are contaminated with all sorts of dirt at almost every stage. In the soldering process, the flux (either rosin-based or more recent organic forms) may cause residues or ionic salts to remain on the pads and traces and be sticky. Next there is etching, plating and micro-etching; the chemical processes will put metal ions on the copper unless the rinsing is complete. Tiny particles of metal shavings, fiberglass dust, and laminate fragments are also thrown out in ......
Apr 07, 2026
Fabrication Processes
Laser Engraving vs. Professional PCB Fabrication : Understanding DIY Limitations and Industrial Advantages
In the conventional approach, we first apply a mask pattern and then remove metals using chemicals. In hobby electronics, using a laser engraver to make circuit boards is an exciting idea. The basic concept is to generate a laser to pattern a copper-clad board. Typically, a bare PCB is first coated with a dark resist layer that protects the copper. Then a laser cutter follows your circuit design to burn away the resist where copper traces should remain. After laser etching, the exposed copper is chemi......
Apr 07, 2026
Fabrication Processes
Why Laser Cutting is Critical for High-Quality PCB Depaneling
One of the newest and most promising methods for separating PCBs from the panel as a whole is laser depaneling. Using an appropriate separation procedure or tool, the printed circuit boards (PCBs) that have already been made and installed are cut out of the panel during the depaneling process. Laser depaneling uses a concentrated laser beam to ablate the material in layers, allowing for a singulation process. In the parts that follow, let's examine the appropriate protocols and methods. See how laser ......
Apr 07, 2026
Surface Finishes & Coating
How to Waterproof a PCB: A Step-by-Step Potting Guide
PCBs are everywhere, they are an integral part of nowadays essential things. We can not imagine a world without them. Almost all the things which have power or that can take power have at least a PCB. Because they are used so often the circuit needs to operate in challenging environments. Mostly we are talking about outdoors, under the hood or in humid industrial settings. The term potting becomes a crucial solution for all this. Potting a printed circuit board (PCB) helps protect it from moisture, du......
Apr 07, 2026
Surface Finishes & Coating
HASL Surface Finish : Proven Reliability and Cost Efficiency in High-Quality PCB Manufacturing
In case you have ever been confused by seeing the acronym HASL on the PCB spec sheet and wondered what it means, here is the brief description: HASL is the abbreviation of Hot Air Solder Leveling, and it is one of the oldest, and still most dependable, surface finishes in the printed circuit board. You simply put the board into a pot of molten solder, typically a tin-lead or lead-free blend, and blow hot air over the solder to remove the excess and leaving a thin coat of solder on each exposed copper ......
Apr 07, 2026
Surface Finishes & Coating
Design and Surface Finish of Coil Boards
Circular coils are a wiring method sometimes used in PCB layout. They serve primarily as inductors, transformers, antennas, and more. Considering the production of PCBs containing coiled traces, please take note of the following points: 1. Compared to conventional circuits, it might not be possible to detect short circuits between windings of circular coils if the coil is a closed circuit. Therefore, the requirement for trace width and spacing is 0.254 mm (with a limit of 0.15 mm, but only when the co......
Apr 03, 2026
Fabrication Processes
Demystifying Depaneling: A Comprehensive Guide to Efficient PCB Separation
PCB (Printed Circuit Board) separation, also known as depaneling, is a critical step in the manufacturing process that involves separating individual PCBs from a larger panel. Efficient and precise PCB separation is crucial for ensuring the quality, functionality as well as overall look of electronic devices. However, this process can be challenging, especially with the increasing complexity of PCB designs and the demand for high-volume production. In this comprehensive guide, we will demystify the de......
Apr 03, 2026
Design for Manufacturing
Critical Aspect of PCB Panel Size
PCB panel size is a major factor in designing printed circuit boards because it directly affects how quickly they can be manufactured, how they are assembled, and how much they generally cost. From home electronics to heavy industrial, PCBs are the building blocks of practically all devices in the modern electronics. This article covers the importance of PCB panel size, the elements affecting it, the best approaches to maximize it, and its applications in multiple sectors. 1. What is PCB Panel Size? P......
Apr 03, 2026
Fabrication Processes
What Is CAM: Computer-Aided Manufacturing Basics
When electronics start evolving, the circuits start becoming more complex and integrated. Before, these circuits were made using hand-drawn paper, but the evolution of digital electronics changed the perspective. Nowadays, we have CAD (Computer-Aided Design), which has become the art of creating a blueprint. Just define the functionality of a circuit, and we can nowadays easily synthesise a circuit only in software. The software has become so advanced that the whole digital flow is possible without lo......
Apr 02, 2026
Fabrication Processes
Understanding the Role of PCB and PCBA in Electronics
PCBs and PCBAs are the building blocks of most electronics we use today, from smartphones to industrial machines. PCBs are the actual platforms that connect electronic parts, but PCBAs go one step further by adding parts to the board, which makes them work. PCBs and PCBAs assembling and designing correctly is important for modern electronics, and this article discusses the different types and best practices for each. What is a PCB? A printed circuit board (PCB) is a flat board that holds electronic pa......
Apr 01, 2026
PCB Sourcing & Procurement
How to Choose the Right Solder Wire for Your Projects
Solder hails from the middle english word soudur, which derives from the latin word solidare, meaning "to make solid." It's a fusible alloy (i.e. low melting point) used to bond metal workpieces together. Solder is a material that is used to bond objects, such as pipes or wires, together permanently. The primary application for soldering in the plumbing industry is leak-free connections. In the electronics industry, soldering is used to fuse wires for circuit components. Soldering is an essential skil......
Apr 01, 2026
PCB Sourcing & Procurement
Lead-Free vs Lead Solder: What’s the Real Difference?
Solder is used by the majority of electrical devices to connect components to PCBs. The procedure of soldering is, when a solder melts down it will make a connection. This connection can be between pads or wires. Soldering is not like welding, we can attach the two joints by heating them again a lil bit. Although after performing the soldering step the curing and cooling is required. If during the cooling step there is any disturbance occur in the system it will lead to dry joints. Two main varieties ......
Apr 01, 2026
Surface Finishes & Coating
All you need to know about PCB Gold Fingers
In today's highly connected, tech-driven world, seamless communication between devices is essential, and it all starts at the circuit board level. A critical element in enabling this communication is the use of gold fingers, the gold-plated connectors that link circuit boards to motherboards, making the flow of signals possible. Although it looks nice, gold plating is not merely for aesthetic purposes, it serves a practical function critical to the connector performance. Without gold fingers, critical......
Mar 31, 2026
Surface Finishes & Coating
Considerations for Gold Finger Bevel Design
In our daily lives, we often come across products with a row of contacts on the PCB edge used for connections, which are known as PCB gold fingers. They are also referred to as "edge connectors", typically serving as the external connection interface for a PCB board when inserted into a slot. Technical Guidance So, what should you keep in mind when designing PCBs with gold fingers? Excessive beveling of PCB gold fingers can result in the fingers not making proper contact with the mating equipment duri......
Mar 31, 2026
Design for Manufacturing
Understanding the Importance of Annular Rings in PCB Design
Annular rings play a crucial role in printed circuit board (PCB) design, ensuring the proper electrical connection of two pads. The signal and current flow are characterized based on the placement of annular rings between two layers. Incorrect calculation of size and improper placement can lead to transient behavior and flicker noise in electronic components. In this article, we will consider all important steps to improve our design from annular ring issues, tangency, and breakout. An annular ring in......
Mar 30, 2026
Fabrication Processes
Mouse Bites in PCBs: Easy Solutions for Clean Separation and Professional Results
Have you ever broken a PCB off its manufacturing panel and experienced that embarrassing jolt of cringewave when you realized you were left with the rough jagged edge? You see, when you have already handled some panelized boards in our lab, you realise that the de-paneling can make or break the ultimate product. The little rows of holes drilled along breakaway tabs, which people refer to as mouse bites on PCBs, are one of the most efficient methods of separating boards in a very clean way, and learnin......
Mar 24, 2026
Quality & Reliability Testing
How PCB Cross Section Analysis Ensures Flawless Multilayer PCB Quality
Ever wondered what is really under a multilayer PCB? A completed board appears to us as a student as a flat and homogeneous slab of laminate and copper, yet internally a maze of plated vias, buried copper layers, thin dielectric films, and resin-filled structures, all of which must be within very strict tolerances. Cross-section analysis is the PCB equivalent of peeling back the layers and getting the true picture. Every person involved in PCB design or manufacturing, in a laboratory or on a productio......
Mar 24, 2026
Fabrication Processes
How Plated Through Hole Technology Creates Reliable Multilayer PCB Connections
Have you ever wondered how a multilayer PCB achieves the feat of holding all the layers together? You can add four, eight, or even twenty copper layers, but unless you have a sure method of connecting the signals between the copper layers, it is just a very expensive paperweight. The plated through-hole is that dependable relation, and it has been the workhorse of multilayer PCB fabrication for a long time. We can take examples from a two-layer Arduino shield to a 16-layer server motherboard; plated t......
Mar 24, 2026
Fabrication Processes
The Guide to Quick Turn PCBs : Fast Prototypes and Reliable Production
Have you ever calculated how much dead engineering time your team burns waiting for PCBs? If your standard fabrication turnaround is two to three weeks and your design needs three revision cycles, a modest number for anything beyond a breakout board. You are looking at wait time of 6 to 9 weeks alone. That is not a scheduling problem. That is a momentum killer, and it is exactly why quick-turn PCB fabrication has shifted from a nice-to-have to a strategic weapon in hardware development. The calculus i......
Mar 11, 2026
Fabrication Processes
Mastering Precision in PCB Drilling : Tools, Techniques, and Via Optimization for High-Quality Boards
In the modern multilayer boards, the accurate holes are used to connect internal copper layers and to assemble components. In our case, the drilling opens the vias and through-holes through which the signals are transferred among the layers, and it is the most important part of the PCB manufacturing, frankly speaking. The reason is that it provides the basis of vias and ensures that the various PCB layers are able to communicate with one another. All through-holes on the plated begin as a simple drill......
Feb 04, 2026
Fabrication Processes
PCB Etching in Professional Fabrication : Modern Techniques and Industrial Strength
The etching of printed circuit boards is the selective removal of unwanted copper on a board to form the conductive traces and pads. It is effectively a subtractive process; after the photolithography or a printed resist mask has been applied, the remaining copper is removed with a chemical ether solution. It leaves the circuit pattern it was intended to create. Well, imagine that you are on the copper at the spa, you put it in the correct bath, and the undesired metal just dissolves. Etching is accur......
Feb 04, 2026
Surface Finishes & Coating
Solder Mask on PCBs : Protecting Traces, Guiding Assembly, and Boosting Long-Term Reliability
As we wear masks to save us from pollution, in the same way, the ones used by PCB to avoid contamination and oxidation. It became a very important step in PCB manufacturing over the years. In the early days, the manufacturers were more focused on one type of color, but today we have multicolor PCBs. That’s how the soldermask process evolved over the years. From protecting delicate copper traces to ensuring precise soldering during assembly. The solder masks directly influence yield and long-term field......
Feb 04, 2026
Surface Finishes & Coating
PCB Silkscreen Explained : From Design Intent to Professional Application and Manufacturing Precision
Let’s come to the topmost layer of a PCB, which is about annotations. We all need some reference material to work on, and the same applies to the assembler, from component assembly to referencing different section legends and silkscreen plates; it plays an important role. In a finished printed circuit board, the silkscreen layer is the least technically appreciated element. It is the most helpful layer for the end user because we can not look into the layout, datasheets, and schematics. That’s how som......
Feb 04, 2026
Surface Finishes & Coating
PCB Coating Spray: Conformal Layers for Bulletproof Circuit Protection
Conformal coating is like giving your printed circuit board an invisible raincoat or even a bulletproof vest. It’s a thin polymer film applied over the PCB and its parts to protect against moisture, dust and vibration. This shield is lightweight and flexible, which means it conforms closely to every contour of the board. The goal is to extend the board’s life and reduce failure rates in harsh conditions. Spray application is one popular method to lay down this protective coat. In this article, we will......
Feb 04, 2026
Quality & Reliability Testing
Test PCB Board : Complete Testing Methods and Best Practices
As a PCB manufacturer, we always conduct testing with a number of stages, because if you’ve ever designed a PCB and sent a beautifully routed board to JLC, waiting eagerly for delivery, unboxing it like a new iPhone, only to find out later that a single microscopic solder bridge is enough to turn your masterpiece into a glorified coaster. This is exactly why PCB testing exists, and we are focused more extensively on it. PCB testing is like a basic “health checkup” of your electronic product before it ......
Feb 04, 2026
Design for Manufacturing
How to Prevent Solder Defects During Reflow Soldering
Reflow soldering is a critical step in surface mount technology (SMT) assembly, where solder paste is melted to form strong and reliable joints between components and the PCB. However, defects during this process can lead to assembly failures, rework, and reduced reliability. Understanding the causes of solder defects and implementing preventive measures can significantly improve yield and quality. Know how PCB assembly is done in JLCPCB factory. Common Solder Defects in Reflow Soldering: Solder Bridg......
Jan 30, 2026
Quality & Reliability Testing
Quality Control and Testing in Bare Board Manufacturing
Bare printed circuit boards, or PCBs, are the foundation of almost all electronic devices made today, from computers and cellphones to industrial control systems and aeronautical electronics. Quality control and testing in bare board manufacturing have grown more important since these applications require more dependability. Defects at the PCB level might cause even the most sophisticated circuit designs to fail in the absence of adequate quality assurance. In order to guarantee long-term performance ......
Dec 02, 2025
PCB Sourcing & Procurement
The Importance of a PCB Supplier in the Electronics Industry
Introduction: Printed circuit boards (PCBs) are found in almost all electronic devices, as they are the backbone of modern electronics. They give the mechanical support and electrical connection to run complicated systems. Particularly with regard to large-scale manufacturing, choosing the correct PCB supplier is absolutely vital for guaranteeing the performance, durability, and cost-effectiveness of these boards. This article covers the function of PCB Suppliers, the criteria that should be considere......
Oct 20, 2025
Surface Finishes & Coating
What is ENEPIG and How Does it Compare to ENIG in PCB Finishing?
ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold) is a type of surface plating applied on a Printed Circuit Board to protect it from environmental factors during storage and operation. ENEPIG is prepared by depositing electroless Nickel (Ni 3-5 μm), followed by electroless Palladium (Pd 0.05-0.1μm), and an immersion Gold layer (Au 0.03-0.05 μm). It is good for solder joint strength, gold wire bonding, aluminium wire bonding, and provides low contact resistance. It can easily be deposite......
Oct 20, 2025
Fabrication Processes
The Science Behind PCB Silkscreen Inks and Printing Techniques
Have you ever wondered what type of processes are used in PCB fabrication so that they have permanent silkscreen? How does this ink not erase even if under very harsh conditions? By the way, silkscreen is the top-most layer of a PCB, the white legends that consist of component labels, logos, and polarity marks. Today, we will see the chemistry behind all this and know what type of printing technology is required to make them work. Behind these clean white lines lies a fascinating combination of materi......
Sep 07, 2025
PCB Sourcing & Procurement
Understanding PCB Quote and Packaging Engineering
In the era of electronics miniaturization, which everyone needs, we want lower form factors, lower power consumptions and higher performance. A field “packaging” which also evolves as the things shrink. In the early days electronics were shipped in big boxes with no need of high end packaging because components were not so delicate at that point. But the small components need quality packaging. The field of packaging becomes a type of engineering as well. Which keeps the things inside the package inta......
Aug 19, 2025
Design for Manufacturing
What's the Difference: Countersink VS Counterbore Holes in PCBs?
When designing printed circuit boards (PCBs), engineers often need to create holes in the board to mount components or attach connectors. Two common hole types are countersunk and counterbored. While they may seem similar at first glance, there are important differences between countersink and counterbore holes that impact their use in PCBs. Both terms are commonly used in CNC machining. Normally countersink is a cone-shaped hole and the counterbore is a cylindrical flat-bottomed hole. This article wi......
Aug 15, 2025
Fabrication Processes
Importance of Photoresist in a Printed Circuit Board
Photolithography is not only widely known, but the only technique through which semiconductors are manufactured. This is the method used to manufacture PCBs, ICs, and other electronics components. The most important thing to see, however, is how the lithographic process functions and where the photoresist fits in. A mask layer is used when making a trace through the etch process. This photoresist is then applied and allowed to cure, etching the uncovered parts and creating traces. We also carry out th......
Aug 13, 2025
Fabrication Processes
What is a Circuit Board Holder? Types, Uses & How to Choose
A circuit board holder also known as a PCB holder is a tool designed to secure printed circuit boards (PCBs) at one place. So that it would not move during operations such as soldering, desoldering or testing. These holders not only offer convenience but also enhance safety and accuracy during intricate tasks. PCB holders are essential for: ● Stability: Ensuring the PCB stays securely in location throughout the assembly. ● Alignment: Helping position components as they ought to be for precise solderin......
Jul 23, 2025
Fabrication Processes
Types of Drill used in PCB Board Manufacturing
The most costly and time-consuming step in the production of circuit boards is drilling. This is due to the fact that the procedure needs to be followed precisely in order to guarantee the greatest quality levels. A manual or laser PCB drill is typically used for different cut outs. They can either be outline, holes or may be PCB internal cut out shape. In the production of PCBs, drilling is essential. Bad electrical connections or even a board breakdown might result from poorly drilled holes. High-pr......
Jul 14, 2025
Surface Finishes & Coating
Understanding the Role of Solder Resist Materials in PCB Fabrication
Solder resist, also known as solder mask, Yes they are the same. Again two different names for the same thing but the solder mask one is adapted globally. The protective coating used on PCBs to stop solder from bridging undesired places is referred to by both designations. Although the term "solder mask" is frequently used, "solder resist" is more technically correct since the resist material opposes the solder as it is being assembled. Nonetheless, in the business, both phrases are frequently used in......
Jul 14, 2025
Fabrication Processes
DXF Files for PCB Fabrication Everything You Need to Know
DXF (Drawing Exchange Format) is a widely used file format developed by Autodesk for storing and exchanging CAD drawings. It is a vector-based format that represents two-dimensional (2D) and three-dimensional (3D) drawings in an ASCII or binary format. In PCB (Printed Circuit Board) design, DXF files are primarily used for mechanical drawings, board outlines, cutouts, and other non-electrical design elements. DXF files are normally created using a mechanical based tool. For example: If you need this i......
Jun 24, 2025
Fabrication Processes
How Machines Revolutionize PCB Silk Screen Printing
The layer of printed text, symbols, marks, and images on a printed circuit board's (PCB) surface is referred to as PCB silkscreen. As part of the PCB manufacturing process, it printed specific ink or substance that resembles ink onto the PCB surface so that it offers information on component placement, assembly instructions, and identification. When it comes to producing high-quality printed circuit boards (PCBs), precision and accuracy are paramount. Advanced PCB silkscreen printing machines that del......
May 30, 2025
Fabrication Processes
PCB Via Tenting: Everything You Need to Know
If you are familiar with printed circuit boards (PCBs), you have likely come across the term via tenting. It is a crucial technique used in PCB manufacturing that plays a significant role in the performance, durability, and reliability of the final product. But what exactly is PCB via tenting, and why is it so important?In this article, we will break down the concept of via tenting, its benefits, when to use it, and its impact on PCB design and manufacturing. By the end, you will have a clear understa......
May 29, 2025
Design for Manufacturing
Understanding DRC Testing in PCB Design
Design Rule checking (DRC) must be used throughout design and production of printed circuit boards (PCBs). Design rule and constraint compliance (DRC) testing helps eliminate issues that could arise during manufacturing and during the usage of the produced good. A good DRC test makes sure that the design is reliable, reduces mistakes, and meets the manufacturer's requirements, even though PCBs are getting more complicated in modern electronics. In this article, we will talk about why DRC testing is im......
Apr 30, 2025
Fabrication Processes
Countersunk Holes in PCB Design
When designing printed circuit boards (PCBs), engineers often need to create holes in the board to mount components or attach connectors. Two common hole types are countersunk and counterbored. While they may seem similar at first glance, there are important differences between countersunk and counterbore holes that impact their use in PCBs. Both terms are commonly used in CNC machining. Normally countersunk is a cone shaped hole and the counterbore is a cylindrical flat-bottomed hole. This article wi......
Apr 21, 2025
PCB Sourcing & Procurement
Understanding PCB Printer vs. PCB Manufacturer: Which Option Suits Your Needs?
PCB printers are becoming more popular for quick prototyping on-site and small-scale production, especially among artists and new businesses. Traditionally, companies hired skilled PCB manufacturers to make a lot of boards for them. This article will discuss about the differences between using a PCB printer and depending on a manufacturer. It will cover the pros and cons of each and what you should think about when making your choice. 1. What is a PCB Printer? A PCB printer is a special kind of machin......
Mar 28, 2025
Fabrication Processes
From Waste to Worth: Eco-Conscious PCB Production
On the way to becoming more sustainable, the electronics industry is adopting environmentally friendly procedures in the production of Printed Circuit Boards (PCBs). Sustainable practices for manufacturing and recycling PCBs have only recently begun to be implemented in the industry. With the new restrictions on the use of toxic substances and other ways of manufacturing, the PCB industry is addressing climate change. Notable manufacturers of PCBs observe rules such as RoHS and REACH regulations and o......
Mar 05, 2025
Fabrication Processes
The Importance of Drill Drawings in PCB Production
In the realm of printed circuit board (PCB) manufacturing, drill drawings are often overlooked yet critically essential components of the design process. They act as a roadmap for accurate hole placement and dimensions. These drawings guide the drilling process, ensuring precise alignment and compatibility with components, mechanical fixtures, and electrical connections. From enhancing communication between designers and manufacturers to reducing production errors, drill drawings are integral to the f......
Feb 24, 2025
Fabrication Processes
Comparing PCB Etching Techniques
Etching is the process of removing copper elements from the board to pave a conductive path for electricity flow. PCB etching is one of the most important elements of the PCB manufacturing process. Manufacturers must prepare a design, transfer it, apply the etching solution, clean it, and perform a finishing process to etch PCB for an electrical device.Although it sounds straightforward, the PCB etching process is quite complex and precision is vital. Without the proper knowledge of what is PCB etchin......
Jan 20, 2025
Design for Manufacturing
RoHS Compliance in PCBs: What Designers Need to Know
RoHS-compliant in the context of PCBs (Printed Circuit Boards) means that the board and its components adhere to the Restriction of Hazardous Substances (RoHS) directive. RoHS is a set of regulations that restrict the use of certain hazardous materials commonly found in electronic and electrical equipment. The primary goal is to reduce environmental impact and improve health safety during manufacturing, usage, and disposal. To know how PCBs are made in JLPCB fab, visit our comprehensive guide on PCB m......
Jan 19, 2025
PCB Sourcing & Procurement
Custom PCBs: The Ultimate Guide to Designing and Ordering Your Own PCB
Custom PCBs (Printed Circuit Boards) are customized circuit boards designed to meet specific requirements or applications that standard off-the-shelf PCBs cannot fulfill. They are utilized in a broad array of electronic devices and systems, serving as a base for mounting and connecting electronic components like resistors, capacitors, integrated circuits, and connectors. Custom PCBs facilitate the creation of specialized and innovative electronic devices, offering the adaptability to fulfill particula......
Jan 03, 2025
Design for Manufacturing
The Role of Pad Soldering in PCB Design
Introduction Pad soldering is a vital method used in the manufacturing of Printed Circuit Boards (PCBs), especially in relation to Surface Mounted Devices (SMDs). Pad soldering's reliability and precision have grown more crucial as electronic devices keep getting smaller and more complicated. The value of pad soldering in PCB design, varieties of solder pads, optimum techniques for obtaining dependable connections, and typical process difficulties are discussed in this article. What is Pad Soldering? ......
Dec 25, 2024
Fabrication Processes
PCB Milling for Prototyping: Fast, Accurate, and Cost-Effective Solutions
The method of PCB milling is to remove copper portions from a fully copper board to replicate pads, signal tracks, and designs. The design patterns and structure are planned under a GBR G-CODE layout file. Similar to etching this is also a subtractive process, hence create the circuit by removing copper material from the board. PCB milling does not involve any chemical methods, making it suitable and safer for use in general home or office environments without the need for handling hazardous chemicals......
Nov 29, 2024
Design for Manufacturing
Thermal Vias in PCB: A Comprehensive Guide to Heat Management
Introduction In the world of PCB design, managing heat is essential for the reliability and performance of electronic devices. Thermal vias in PCBs play a vital role in heat dissipation, ensuring components last longer. As electronic devices become more compact and powerful, understanding the design and placement of PCB thermal vias and other thermal management techniques is crucial. This guide delves into thermal vias in PCBs, focusing on their design, placement, and effectiveness in thermal manageme......
Nov 26, 2024
Fabrication Processes
The Ultimate Guide to High-Multilayer PCB Manufacturing for Engineers
With the development of electronic devices towards higher performance and smaller sizes, the precision and performance requirements for PCBs are also increasing. High-multilayer PCBs can provide more routing layers, allowing for more complex and dense circuit designs, meeting the needs for high-frequency, high-speed transmission. Moreover, high-multilayer PCBs can achieve better signal integrity and electromagnetic compatibility. This is particularly important for high-end applications such as 5G comm......
Nov 04, 2024
Design for Manufacturing
A Comprehensive Guide to Countersunk Holes in PCB Design
When designing printed circuit boards (PCBs), engineers often need to create holes in the board to mount components or attach connectors. Two common hole types are countersunk and counterbored. While they may seem similar at first glance, there are important differences between countersunk and counterbore holes that impact their use in PCBs. Both terms are commonly used in CNC machining. Normally countersunk is a cone-shaped hole and the counterbore is a cylindrical flat-bottomed hole. This article wi......
Sep 29, 2024
Fabrication Processes
Copper Plating of the PCB Board
Introduction Printed Circuit Boards (PCBs) are fundamental components in modern electronics, providing the necessary platform for electrical components to communicate. At the heart of their manufacturing lies PCB copper plating—a crucial process that ensures these boards can conduct electricity effectively. This article explores what PCB copper plating is, why it matters, how it works, its benefits, common issues, and how manufacturers ensure quality. Source: https://jurgis.me Understanding PCB Copper......
Sep 25, 2024
Fabrication Processes
The Importance and Types of Countersink Holes in PCB Design
Printed Circuit Boards (PCBs) serve as the foundation for electronic devices, enabling the sophisticated interconnection of components. Countersink holes play a crucial role in PCB design by facilitating secure fastening of components and enhancing overall reliability. This article explores the various types of countersink holes utilized in PCBs, detailing their features, benefits, applications, and practical considerations. Introduction Countersink holes are specialized apertures that allow the head ......
Aug 08, 2024
Quality & Reliability Testing
How to Avoid Copper Peel Off
Hot Air Solder Leveling (HASL) involves coating the surface of the exposed copper with a layer of tin alloy to prevent oxidation and provide a good soldering surface for subsequent assembly. The basic process of HASL is to briefly immerse the PCB board into a high-temperature liquid tin bath. Through the action of flux and high-temperature tin, a copper-tin alloy (IMG) is formed. Then, on guide rails, the board is lifted out while high-pressure gas blows away excess tin from non-copper areas and level......
Jun 14, 2024
Design for Manufacturing
Addressing Panelization Issues with Irregular Shapes and Structures
In production, JLCPCB has frequently had to process panel designs which have insufficient consideration for V-cutting. Simply tiling multiple boards together is suitable for uniformly sized and regularly shaped rectangular boards. However, for irregularly shaped boards with varying sizes, such a naive panel design is not feasible. Instead, it requires a consideration of the capabilities and requirements of the machines involved in production. Below, we will provide specific analyses using real-world e......
Mar 26, 2024
Surface Finishes & Coating
How to Choose the Right Surface Finish for Your PCB
When it comes to designing and manufacturing of printed circuit boards (PCBs), considering the element of your surface finish is a critical decision. In addition to influencing the PCB's aesthetics, surface finish is essential to the functionality, dependability, solderability and longevity of the electronic equipment it powers. The surface finish serves as a protective layer on the exposed copper traces of a PCB. It prevents oxidation, promotes solderability, enhances conductivity, and provides a lev......
Feb 27, 2024
Surface Finishes & Coating
Comprehensive Guide to Exploring PCB Surface Finish
The PCB surface treatment process is a crucial step in PCB manufacturing. Its purpose is to protect the copper surface from oxidation and ensure that it can bond well with the solder during the soldering process. The following are some common PCB surface treatment processes and their advantages and disadvantages: HASL (Hot Air Solder Leveling) Hot air leveling (HASL) is a traditional method for treating the surface of PCBs. The process involves immersing the PCB in molten tin and then using hot air to......
Jan 31, 2024
Fabrication Processes
Diving Deep in PCB Etching
Hi there! Creating printed circuit boards (PCB's) requires a complex process called PCB etching, which we will examine in this article along with the methods and innovations that have driven this field. Regardless of your background—engineering, hobbyist, student, professional, or enthusiast—JLCPCB provides insightful information about PCB etching. Understanding PCB Etching PCB etching is a fundamental step in the production of printed circuit boards. It involves selectively removing copper from the b......
Jan 11, 2024
Design for Manufacturing
Design Optimization: How to Avoid Incomplete Milling of Internal Corners in PCB Panels
When panelizing PCBs with no gap between boards, the outlines of adjacent boards can sometimes form sharp internal corners that cannot be accurately routed without artefacts such as spurs or indents. Panels like this need to be redesigned to ensure complete, spur-free board outlines. Example V-Cut Panel With Three Boards Two Possible Routing Strategies And Results Because the router bit is round, it's unable to reach into tight corners. The unreached parts become sharp spurs after separating the board......
Jan 09, 2024
Surface Finishes & Coating
Protective Measures for PCBs: Safeguarding Electronics from Environmental Factors and Electrical Hazards
Printed Circuit Boards (PCB’s) serve as crucial parts of electronic devices providing the framework for connecting various electrical components. Put in place strong protection measures to guarantee the dependable and durable operation of PCBs. PCB protection means preventing external influences, electrical problems, mechanical stress, and excessive temperatures from harming the board and it’s components. In the subsequent sections, we will delve into nine methods, which are summarized into five major......
Dec 07, 2023
Design for Manufacturing
Maximizing PCB Design and Manufacturing Success with Effective PCB Pad Implementation
Within the realm of PCB (Printed Circuit Board) design and manufacturing, the significance of PCB pads cannot be overstated. These small, yet vital parts play a crucial role in ensuring reliable and secure connections for optimal performance. In this article, we dig further into the essential aspects of PCB pads, including what they are, different pad types, and their design considerations, impact on manufacturing, and material choices, all aimed at enhancing the overall quality of PCBs. I. What Are P......
Nov 27, 2023
Surface Finishes & Coating
Demystifying Conformal Coating
Welcome to JLCPCB's blog, your ultimate resource for all things related to conformal coating for printed circuit boards (PCBs). In this article, we will explore the significance of conformal coating, the different types of coating materials available, the application process, and the importance of quality assurance and testing. Whether you're a seasoned PCB designer or a beginner in the field, this article will provide valuable insights to help you understand and utilize conformal coatings effectively......
Oct 20, 2023
Fabrication Processes
From Concept to Completion: How a PCB Manufacturer Brings Your Ideas to Life
Are you a PCB engineer seeking a reliable partner to turn your ideas into reality? Look no further! In this article, we will explore the process of how a trusted PCB manufacturer can bring your concepts to fruition and answer questions when evaluating a PCB manufacturer. Discover the key characteristics to consider how pcb manufacturer can help you achieve success. Expert Guidance for Optimal Results Partnering with a reputable PCB manufacturer means gaining access to a team of experienced professiona......
Oct 09, 2023
Design for Manufacturing
Avoiding Ambiguities for Non-Standard PCB Shapes
Typically, PCBs have regular rectangular shapes. However, nowadays, many PCBs are becoming smaller in size, and with the changing market, they are incorporating more functions and accommodating more diverse casing shapes. This has led to more complex designs, especially for non-standard shapes that often require more care in design and manufacture. Now, let's explore the different outcomes that can arise due to the improper design of non-standard shapes. 1. Routing Only Along the Outer Layer (Green li......
Sep 21, 2023
Design for Manufacturing
PCB Design Tips: How to Avoid Damaged Traces and Pads
PCB Design Tips: All machining operations have finite errors, and milling in PCB production is no exception. JLCPCB’s regular milling tolerance is ±0.2 mm, with a precision ±0.1 mm option available. Due to these errors, it’s necessary to leave at least a 0.3 mm safety margin between any copper and a milled edge. Insufficient clearance can lead to damaged traces and pads, resulting in defective boards. Problem and Solution A milled slot on the board (purple) is placed too close to a nearby trace and cu......
Aug 17, 2023
Design for Manufacturing
PCB Design Tips: The Introduction of L Special-shaped Board
PCB Design Tips: L special-shaped board upside-down jigsaw puzzle. In actual production, there are L special-shaped boards, which can be rotated 180 degrees to increase the utilization rate of the boards and reduce costs. The conventional boarding methods include V-cut boards and stamp hole boards.The V-cut processing is linear, from one end of the V-cut to the other end, and it is necessary to pay attention not to the V-cut to the PCB circuit pattern when assembling the board. GET FREE QUOTE>>
Aug 04, 2023
Design for Manufacturing
PCB Design Tips: Why Perfboard is Not Suitable for Soldering
PCB Design Tips: Perfboard should be made of immersion gold instead of HASL. HASL is also called hot air leveling (HSAL). Its processing method is to immerse the board vertically down into the liquid tin liquid through the guide rail, then lift it up, and blow the flat surface with strong hot air. The residual tin liquid in the hole of the "board" flows out from the hole under the action of hot air, and part of it may stick to the adjacent pad, thus forming a short circuit failure. For this kind of "p......
Aug 04, 2023
Design for Manufacturing
PCB Design Tips: How to Avoid Solder Splatter
PCB Design Tips: Immersion gold should be used to avoid tin blast holes. HASL is also called hot air leveling (HSAL). Its processing method is to immerse the board vertically down through the guide rail into the liquid high-temperature tin liquid, and then lift it up, and use strong hot air to blow the tin liquid on the surface of the slot hole plate. If the tin hole is too large (round hole or oval hole), the copper surface of the hole wall will sometimes fall off from the base material, which will c......
Aug 04, 2023
Design for Manufacturing
PCB Design Tips: How to Prevent Breakage of Traces during Board Bending
PCB Design Tips: How to avoid breaking the board when the thin and narrow connection is broken? In actual production, sometimes there are narrow and long connections, some of which may be wired. After the PCB is processed by V-cutting, the customer's force is uneven when dividing the board, and the force on the narrow place is weak. It is easy to break when breaking the board (at A in the figure below). At this time, we can change the way of jigsaw puzzles, and open a gap of 1.6-2MM between the boards......
Aug 04, 2023
PCB Sourcing & Procurement
The Dos and Don'ts of Choosing a PCB Manufacturer
Choosing the right printed circuit board (PCB) manufacturer is a critical decision for electronics engineers, designers, and manufacturers. With so many options available, it can be overwhelming to decide which manufacturer to trust with your PCB assembly needs. The quality of the PCBs you use can make a significant impact on the performance, reliability, and safety of your electronic devices. Therefore, it is essential to choose a manufacturer that can meet your specific requirements while providing ......
Jul 24, 2023
Fabrication Processes
Gerber Files: The Essential Tool for PCB Manufacturing - JLCPCB
When it comes to PCB manufacturing, Gerber files are an essential tool for ensuring that your PCB design is accurately translated into a physical product. Gerber files are a set of instructions that communicate the design specifications to the manufacturer. As a leading PCB manufacturer in the industry, JLCPCB utilized a Gerber real-time analysis system for providing instant online quotes and a Free Gerber Viewer for free inspecting if Gerber files are 100% accurate for manufacturing file standards. S......
Mar 29, 2023
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