JLCPCB Blog

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

Components & Sourcing

ESP32 vs Arduino: Differences, Performance, and How to Choose the Right Board

When deciding between ESP32 vs Arduino for your next electronics project, the right choice depends heavily on your specific engineering requirements. To put it directly: the ESP32 is the best choice for IoT, wireless connectivity, and high-performance computing, while Arduino remains the gold standard for beginners, simple hardware control, and deterministic timing. Which is better, ESP32 or Arduino? The answer lies in your project’s demands for processing power, power consumption, and connectivity. L......

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 ......

Sep 29, 2024

Assembly Techniques

IC Package Types Explained: A Practical Guide for PCB Designers

Walk into any electronics lab, and you'll hear the same debate: "Which IC package should I use here?" It sounds like a simple question until you realise the answer determines your PCB footprint, thermal headroom, assembly process, rework feasibility, and field reliability - all at once. This guide breaks down every major IC package type used in modern PCB design, helping you understand the differences between common IC package types in plain engineering language so you can make the right call from the......

Apr 15, 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.......

Aug 27, 2024

PCB Structures & Fundamentals

Dimensional Stability in PCB Manufacturing: Precision Solutions for Reliable PCBs

Dimensional stability is the ability of a PCB substrate and finished board to maintain its intended dimensions under varying temperatures, humidity, mechanical stress, and chemical exposure during fabrication, assembly, and operation. For engineers designing high-reliability electronics, this property directly determines registration accuracy in multilayer boards, solder joint integrity, and long-term field performance. Poor dimensional stability can cause trace misalignment, via cracking, or board wa......

Apr 15, 2026