Technical Guides
The Complete Guide to High Current PCB Design
Learn how to design reliable high current PCBs with the right copper thickness, trace width, thermal management, materials, and components for production.
Everything You Need to Know About PCB Backdrilling
PCB backdrilling is a controlled-depth drilling process used to remove via stubs in multilayer PCBs, helping improve signal integrity in high-speed designs.
SMD Resistor Size Chart
Use this SMD resistor size chart to quickly compare 01005–2512 packages, imperial and metric codes, dimensions, and typical power ratings.
Arduino Uno-Based Traffic Light Project
This Arduino Uno-based traffic light project recreates a real signal cycle, showing how red, green, and yellow LEDs can be controlled with simple timing logic.
Practical High-Speed PCB Design Guide for Real Manufacturing
High-speed PCB design is often associated with advanced materials, but material choice is only part of the story. This article explains why practical layout design matters just as much for reliable manufacturing.
Wave Soldering Process for Through-Hole PCB Assembly
Even as SMT dominates modern PCB assembly, wave soldering remains essential for strong, repeatable through-hole joints. PCBCool explains why this process still matters.
The Complete Guide to PCB Via Filling
PCB via filling fills plated vias to improve reliability, routing density, heat transfer, and via-in-pad support. PCBCool explains when and how to use it in PCB design.
ESP32 WiFiManager Tutorial for WiFi Setup
ESP32 WiFiManager is a library that helps ESP32 devices configure WiFi without hardcoded credentials. This tutorial explains how to set it up step by step.
BGA Rework Tutorial to Support Your Failure Repair Process
BGA rework is a high-risk process that requires precise rework stations and inspection equipment. In this article, PCBCool explains the full BGA rework process step by step.
How the Reflow Soldering Process Works in SMT Assembly
The reflow soldering process turns solder paste into reliable PCB joints in SMT assembly. This guide explains how profile control, inspection, and process stability affect solder quality.
LattePanda Mu Carrier Board Design Guide (Intel N305)
This guide explains how to design a custom carrier board around the LattePanda Mu, turning an x86 SOM into a reliable hardware platform for embedded, industrial, and edge computing applications.
How a PCB Is Manufactured Step by Step
PCBCool explains the standard bare PCB manufacturing process step by step through text, images, and video, from production files to finished circuit boards.
Everything You Need to Know About Zener Diodes
A Zener diode is a specially doped p-n junction diode designed to operate in reverse breakdown and maintain a stable voltage.
Complete Guide to Tunnel Diodes
A tunnel diode is a heavily doped p-n junction diode that uses quantum tunneling to produce negative resistance. This guide explains its working principle, characteristics, and applications.
How to Test a Diode to Determine If It Is Bad
Test a diode in forward and reverse bias. A good diode shows a normal forward voltage drop and blocks current in reverse; abnormal readings usually indicate a bad diode.
The Difference Between Diodes and Resistors
A diode is a semiconductor component that mainly allows current to flow in one direction, while a resistor is a passive component that limits current in a circuit.
What Is PCB X-Ray Inspection and Why Is It Needed?
PCB X-ray inspection uses non-destructive imaging to check hidden solder joints and internal board structures, especially in BGA, QFN, and high-density SMT assemblies where visual inspection is not enough.
What Is Laser Drilling in PCB Manufacturing
Learn what PCB laser drilling is, how it forms microvias for HDI boards, and why process control matters for advanced PCB manufacturing.
What Is Vacuum Etching in PCB Manufacturing
When trace and space become extremely tight, etching control becomes critical. Learn how vacuum etching helps improve fine-line PCB accuracy and HDI production stability.
Radar PCB Design Guide
Learn how to design radar PCBs for 24 GHz, 60 GHz, and 77–81 GHz systems, from laminate and stackup selection to RF routing, antenna integration, via design, and manufacturability review.
