JLCPCB Blog

High-Speed Layout

High Speed PCB Layout Guide for Reliable Signal Control

High speed PCB routing refers to a layout design where signal behavior follows transmission line theory. High-speed PCB layout treats traces as controlled impedance paths rather than simple conductors. Signal integrity, power integrity, and electromagnetic effects guide routing decisions in high-speed PCB design. Traditional PCB routing focuses on electrical connectivity between components. High-speed PCB layout focuses on waveform preservation, timing accuracy, and noise control. Signal edges propaga......

Apr 30, 2026

Layout for Manufacturing

How to Prepare PCB Drawings for Fabrication Services?

You already know the frustration of sending a PCB design for fabrication and having it come back with an "on-hold" notice. The drawing stage is where the real headaches start. You can have a perfect simulation, but if your documentation doesn't translate to the factory floor, it’s just expensive scrap metal. Creating a high-quality PCB drawing is essentially building a bridge. On one side, you have your theoretical circuit. On the other hand, you have a physical, high-performing product. The transitio......

Apr 30, 2026

Hand Soldering Techniques

Best Manual Pick and Place Tools for Precise PCB Assembly

While fully automated robotic SMT lines handle mass production efficiently, every hardware innovation begins on a workbench. Engineers shifting from soldering large through-hole components to microscopic surface-mount devices (SMD) by hand quickly realize that precision and control are everything. Achieving factory-level assembly on your desk is absolutely possible with the right setup. This guide reviews the essential tool categories needed to build an effective prototyping workbench, covering precis......

Apr 30, 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......

Feb 28, 2026

Stencil Technology

Top 5 Circuit Board Stencil Mistakes & How to Fix Them for Higher SMT Yield

Usually, the circuit board stencil is responsible for roughly 60% to 70% of all SMT defects. That number surprises people. It shouldn't. The stencil controls paste volume, deposit geometry, and positional accuracy all at once. When it gets wrong, everything downstream pays for it. The shift in thinking that separates good engineers from great ones is simple: stop seeing the PCB stencil as a metal sheet with holes in it. It is a precision fluid delivery system. Every aperture wall, every micron of foil......

Apr 30, 2026

Basics & Tips

The Ultimate Guide to IC Symbol: Meaning, Types & Circuit Diagram Examples

Think of an integrated circuit (IC) as a microscopic city of electronics. Instead of drawing hundreds of individual components, engineers use an integrated circuit symbol to represent the entire system as one clean block. While the physical chip might look like a tiny black bug with metal legs, the IC schematic symbol explained on paper is a functional map. Understanding these electronic IC symbols makes designing and troubleshooting infinitely easier. What you will learn in this guide: 1. Understand ......

Apr 30, 2026