How to Inspect PCB Laser Solder Joints: 4 Optical Detection Methods

As electronics move toward miniaturization, laser solder joints are becoming smaller and harder to inspect. This guide covers four optical detection methods used to evaluate solder joint quality—laser triangulation, reflection distribution, multi-angle imaging, and multi-focus detection—and explains how process control from SPI to 3D AOI prevents defects at the source.

2026.10.22

Why AOI Inspection Is the Gatekeeper of SMT Solder Quality

As PCBs shrink and component density increases, manual visual inspection is no longer enough. AOI (Automated Optical Inspection) uses high-resolution cameras and image processing to catch missing components, misalignments, and solder defects right on the SMT line. This guide covers how AOI works, what it can detect, and how manufacturing process control prevents the most common SMT defects.

2026.10.21

Power PCB Design Essentials: From Thermal Management to Manufacturability

Power PCBs face challenges that standard signal boards don't: high currents, high voltages, and extreme heat. This guide covers the core essentials of power PCB design—thermal management, power and ground routing, component layout, via design, protection circuits, and EMC—while highlighting the manufacturing pitfalls that can cause production failures.

2026.10.21

PCB Plated Through Holes (PTH) vs. Vias: Concepts and Manufacturability

In PCB design, holes are not all created equal. Plated through holes (PTH), vias, and non-plated through holes (NPTH) serve completely different purposes. Mislabeling them in design files often leads to manufacturing delays, extra costs, or assembly failures. This guide explains the differences and the manufacturing pitfalls to avoid.

2026.10.19

What Is a Backplane PCB? Key Functions, Advantages, and Manufacturing Priorities

A backplane PCB sits at the back or bottom of electronic equipment, supporting and connecting multiple subsystems. Unlike standard PCBs, backplanes feature higher layer counts, more connectors, and demanding requirements for high-speed signal transmission, power distribution, thermal management, and EMI/EMC. This guide covers their core functions, key advantages, and manufacturing priorities.

2026.10.19

What Is a Backplane PCB? Key Functions, Advantages, and Manufacturing Considerations

A backplane PCB sits at the back or bottom of electronic equipment, supporting and connecting multiple components and subsystems. Unlike standard PCBs, backplanes handle higher layer counts, more connectors, and demanding requirements for signal integrity, power distribution, thermal management, and EMI/EMC. This guide covers their functions, advantages, and manufacturing priorities.

2026.10.16

LCD and Touchscreen PCB Design: From Working Principles to Manufacturability

LCD and touchscreen technology is at the core of devices from smartphones to medical equipment. PCB design directly affects their performance and reliability. This guide covers signal integrity, power management, interface design (MIPI DSI, LVDS), grounding and shielding, stack-up, layout, thermal management, and serviceability.

2026.10.16

What Is HDI? PCB Design Basics and HDI Manufacturing Process

High-density interconnect (HDI) PCBs pack more components into smaller spaces using blind vias, buried vias, microvias, via-in-pad, and fine traces. This guide covers HDI design fundamentals, material selection, stack-up planning, via types, sequential lamination, metallization, and manufacturing considerations.

2026.10.15

15 Common PCB Circuit Effects Every Engineer Should Know

Some PCB problems aren't caused by design errors—they're caused by physical effects. This guide covers 15 common PCB circuit effects, from bridging and ripple to crosstalk, reflection, thermal expansion, and via effects—explaining the symptoms, root causes, and mitigation measures for each.

2026.10.15

High-Speed PCB Design Guide: From Stack-Up Planning to Signal Integrity

Most PCBs carry some risk of signal integrity problems, especially in high-speed digital designs. This guide covers high-speed PCB design fundamentals—stack-up planning, impedance control, material selection, layout strategy, routing, and power integrity—from both an engineering and manufacturing perspective.

2026.10.14

PCB Pad Types and Design Standards: A Complete Guide

Pads are the basic building blocks of surface mount assembly. They form the land pattern of a PCB and serve both electrical connection and component fixation. This guide covers common pad types—square, round, island, polygonal, oval, and open—along with special pads like thermal relief, star, and teardrop pads, and the key design standards for pad shape, size, hole diameter, and reliability.

2026.10.13

PCB Warpage and Bowing: Causes, Prevention, and Manufacturing Control

PCB warpage and bowing are among the most common hidden defects in SMT production. They can cause placement offset, poor solder joints, cracked components, and AOI failures. This article explains the causes—thermal, plating, material, design, and mechanical—and the measures to prevent them.

2026.10.13