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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......

June 13, 2024

PCB Design All posts >

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......

45 Must-Know Flex PCB Design Tips You Can't Afford to Miss!

Achieving perfection in product design requires a careful balance between meeting design requirements and manufacturing standards. However, when it comes to flex PCB (FPC) design, many engineers find themselves at a loss, unsure of where to begin. In this insightful guide, we will delve into 45 essential design guidelines for FPC. By the end, you'll have the knowledge and confidence to navigate the complexities of flex PCB design. Outline and Drilling 1. The minimum distance from through-holes to the ......

Precision in Propagation: Navigating Length Matching and Tuning for Single Tracks and Differential Pairs

In the intricate world of high-speed PCB design, achieving precise signal integrity is paramount for seamless data transmission. Length matching and tuning play pivotal roles in ensuring that signals, both single-ended tracks and differential pairs, reach their destinations without distortion or timing issues. In this blog post, we will delve into the importance of length matching, the challenges associated with it, and best practices for tuning both single tracks and differential pairs in your PCB la......

Shielding in PCB Design: Ensuring Signal Integrity and Electromagnetic Compatibility

Printed Circuit Board (PCB) design plays a pivotal role in determining the performance and reliability of electronic devices. As technology advances, the demand for high-speed data transmission and increased electronic complexity grows. To meet these challenges, engineers are turning to effective shielding techniques in PCB design. In this blog post, we'll delve into the importance of shielding, its benefits, types of shielding, and best practices for implementation. The Significance of Shielding In t......

PCB Manufacturing All posts >

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......

DFM's Key Role in PCB Manufacturing

DFM design in PCB stands for Design for Manufacturability in Printed Circuit Board. In today's highly digital and electronic era, printed circuit boards (PCBs) serve as a backbone and crucial foundation for connecting and supporting electronic components. The quality and efficiency of PCB manufacturing are essential. The impact of design on manufacturing lies in DFM (Design for Manufacturing) – that is, designing for manufacturing. Design for Manufacturing (DFM) plays a crucial role in PCB manufacturi......

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......

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......

PCB Knowledge All posts >

Rigid PCB vs. Flexible PCB: Making the Right Choice

In today's world of modern technology, Printed Circuit Boards (PCBs) play a pivotal role as the backbone for connecting and facilitating the functionality of various electronic components. PCBs come in numerous varieties, but the most prevalent types are rigid PCBs and flexible PCBs. It's crucial to grasp the differences between these two categories when deciding on the most suitable PCB for a specific application. In this article, we will embark on a journey into the world of PCBs, delving into their......

Flex PCB Designing Useful Tips - JLCPCB

Flexible printed circuit boards, or Flex PCBs, are thin, lightweight printed circuit boards that can be bent, folded, and twisted to fit into any shape or size without damaging the electrical connections on the board. Flex PCBs are becoming increasingly popular in various industries, such as aerospace, automotive, medical devices, and consumer electronics. Currently, flex PCB manufacturing is available on JLCPCB at a special offer of $2 (5 pcs). For new users, there are also up to $60 registered coupo......

Introduction to 6-Layer PCBs: Structure, Design, and Applications

Printed Circuit Boards (PCBs) are the backbone of modern electronic devices, providing the physical and electrical framework upon which electronic components are mounted and interconnected. As technology advances, the complexity and performance demands of electronic circuits have led to the development of multilayer PCBs, particularly the 6-layer PCB, which offers a balance between complexity and cost. This article explores the structure, design, and applications of 6-layer PCBs, underscoring their im......

Comparing 6-Layer PCBs with Other Multilayer PCBs: Cost, Complexity, and Optimization

As the demand for sophisticated electronic devices continues to grow, the choice of printed circuit boards (PCBs) becomes increasingly critical. Among the various multilayer PCB options, 6-layer PCBs are often considered for their balance between cost, complexity, and performance. This article examines how 6-layer PCBs compare with other multilayer options, explores strategies for optimizing their design, anticipates future trends in PCB technology, and considers their environmental impact. Cost vs. C......

PCB Assembly All posts >

Exploring the Differences Between Reflow Soldering and Wave Soldering in PCB Assembly

In PCB assembly processing, wave soldering and reflow soldering are two common soldering processes, but the choice of soldering method varies depending on the scenario. What is the difference between these two welding processes? Principles and Applications of Wave Soldering Wave soldering is a batch PCB soldering process mainly used for soldering through-hole devices (THD). The wave soldering process consists of four steps: flux spraying, pre-coating, wave soldering, and cooling. 1.Flux is primarily u......

A Comprehensive Guide to IC Package Technology

What is IC package? IC packaging is the process of packaging electronic components (such as chips, transistors, capacitors, resistors, etc.) into specific shapes and sizes so that they can be easily mounted on a PCB and connected to a circuit. Encapsulation not only provides mechanical protection but also offers electrical connections and thermal management functions. IC package type and size IC package types and sizes vary depending on the component type, function, and application. The following are ......

How to Solve Common Wave Soldering Defects

Wave Soldering Defects The wave soldering process is the primary process that causes defects in PCBA components. It causes a defect rate of up to 50% in the entire PCBA assembly process. Wave soldering is best suited for through-hole components (components with leads inserted into drilled holes in the circuit board). The following are some common problems and their solutions during the wave soldering process: Incomplete Solder Incomplete soldering occurs when the solder fails to adhere properly to the......

Technical Guidance: BGA Design Rules

With the advancement of the electronics industry, chip integration continues to increase, the number of IO pins quickly rises, and power consumption grows accordingly, leading to stricter requirements for integrated circuit packaging. To meet the demands of this progress, Ball Grid Array (BGA) packaging technology is introduced. This technology involves the creation of an array of solder balls on the bottom of the package substrate as the I/O interface for the circuit, connecting it to the printed cir......