Lily's Column

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

IPC Class 2 VS Class 3

by Lily Zhang

IPC Class 2 VS Class 3

What Do IPC Classes Mean? IPC separates PCBs in electronics manufacturing into three different classes. These classes signal the quality of the PCB...
Posted in PCB, PCB design, PCB fabrication, PCB manufacturing

Flying Probes & Testing

by Lily Zhang

Flying Probes & Testing

A flying probe test is a type of ICT in which the probes advance seamlessly from one test point to the next without being part of an added physical...
Posted in PCB, PCB fabrication, PCB manufacturing

Why FR4 Material is Commonly used in PCB Fabrication?

by Lily Zhang

Why FR4 Material is Commonly used in PCB Fabrication?

FR4 is the most common grade dielectric material that is used in the fabrication of circuit boards. This material is incorporated in single-sided, ...
Posted in PCB, PCB fabrication, PCB manufacturing

8 Common Errors in Surface Mount Technology (SMT)

by Lily Zhang

8 Common Errors in Surface Mount Technology (SMT)

Surface Mount Technology Troubleshooting #1 Solder-bridging or electrical bridging Solder bridging is solder across the two conductors that should ...
Posted in PCB, PCB fabrication, PCB manufacturing, pcba, smt, soldering

How To Make PCB At Home

by Lily Zhang

How To Make PCB At Home

Preparation Before Making PCB PCB Design PCB design is usually done by converting your circuit’s schematic diagram into a PCB layout using PCB l...
Posted in PCB, PCB fabrication, PCB manufacturing

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

What is a High TG PCB?

by Lily Zhang

What is a High TG PCB?

What Is a High TG PCB? A high TG (Glass Transition Temperature) PCB is a Printed Circuit Board (PCB) with TG equal to or greater than 170°C, which ...
Posted in PCB, PCB fabrication, PCB manufacturing

How a PCB Assembly Defect Detection System Guarantees Product Quality

by Lily Zhang

How a PCB Assembly Defect Detection System Guarantees Product Quality

Common PCB Defects and Their Impact on Product Quality Solder Bridges Defined as a defect under IPC-A-610D, a solder bridge is formed when two-comp...
Posted in PCB, PCB fabrication, PCB manufacturing, pcba

PCB Standard Via Sizes

by Lily Zhang

PCB Standard Via Sizes

PCB fabricators have their own sets of standard via sizes to choose from when they drill, but they can generally use any standard drill size. Usual...
Posted in PCB, PCB fabrication, PCB manufacturing

PCB Testing Methods

by Lily Zhang

PCB Testing Methods

If you’re wondering how to test a circuit board, you may not realize that there are actually several PCB testings methods. The following circuit bo...
Posted in PCB, PCB fabrication, PCB manufacturing, pcba, Test