Lily's Column

What is a capped via hole?

by Lily Zhang

What is a capped via hole?

A capped via is when plating is added over the via hole so that the surface is fully metalized with a minimum copper / cap plating thickness of 5um...
Posted in PCB, PCB design, PCB fabrication, PCB layout, PCB manufacturing

Manual PCB Reverse Engineering Process

by Lily Zhang

Manual PCB Reverse Engineering Process

At times, advanced techniques of reverse engineering PCB are time-consuming and expensive. In practice, most PCB reverse engineers undertake manual...
Posted in PCB design, PCB layout, reverse engineer, Reverse Engineering

Common Gerber files Problems and how to fix them?

by Lily Zhang

Common Gerber files Problems and how to fix them?

The most common problems seen in Gerber files include design mismatch, insufficient clearances, obsolete file formats, unregistered layers, and inc...
Posted in PCB, PCB design, PCB fabrication, PCB layout, PCB manufacturing

HDI board stack-ups

by Lily Zhang

HDI board stack-ups

HDI board stack-ups High-density interconnect, or HDI, circuit boards are printed circuit boards with a higher wiring density per unit area than tr...
Posted in PCB, PCB design, PCB fabrication, PCB Layer stack-up, PCB layout, PCB manufacturing

How are multilayer circuit boards made?

by Lily Zhang

How are multilayer circuit boards made?

Step 1: Inner layer core selection PCB core material The stack-up designates the materials to be used for the manufacture of a multilayer circuit...
Posted in PCB, PCB design, PCB fabrication, PCB Layer stack-up, PCB layout, PCB manufacturing

What is an Annular Ring?

by Lily Zhang

What is an Annular Ring?

Annular rings are a vital part of any printed circuit board (PCB), but they pose quite a challenge for PCB designers. With such precise work, it’s ...
Posted in PCB, PCB design, PCB fabrication, PCB layout

How to Choose the most suitable Layer Number for PCB Design

by Lily Zhang

How to Choose the most suitable Layer Number for PCB Design

Layer Type and Advantages The designer selects the layer number for the design according to the complexity of the entire circuit, which mainly con...
Posted in PCB, PCB design, PCB fabrication, PCB layout, PCB manufacturing

How to avoid these routing mistakes when designing for controlled impedance

by Lily Zhang

How to avoid these routing mistakes when designing for controlled impedance

Differentiate CI traces from other traces The controlled impedance trace widths must be distinguishable from the remaining traces on the board. It ...
Posted in Impedance Control PCB, PCB, PCB design, PCB fabrication, PCB layout, PCB manufacturing

Basic Rules of Layout and Components Wiring

by Lily Zhang

Basic Rules of Layout and Components Wiring

I.Basic Rules of  PCB Layout 1. According to the circuit module layout, the relevant circuit for realizing the same function is called one modul...
Posted in PCB, PCB design, PCB fabrication, PCB layout, PCB manufacturing

4 Rules of Designing Circuit Width and Spacing with PCB impedance control

by Lily Zhang

4 Rules of Designing Circuit Width and Spacing with PCB impedance control

1. The signal circuit that needs to do impedance should be set strictly according to the circuit width and circuit spacing calculated by the pcb st...
Posted in Impedance Control PCB, PCB, PCB design, PCB layout

5 Golden Rules for PCB Design

by Lily Zhang

5 Golden Rules for PCB Design

The PCB board is the basic electronic component of all electronic circuit design, and as the main support, it carries all the components that ma...
Posted in PCB, PCB design, PCB layout

5 things to avoid when Designing PCB

by Lily Zhang

5 things to avoid when Designing PCB

While trying to prototype a PCB design, you will experience some common slip-ups and even you will experience some these repetitively. It is smar...
Posted in PCB, PCB design, PCB fabrication, PCB layout