Lisa's Column

12 Requirements for Properly Designing PCB Stacking

by Sales pcb hero

12 Requirements for Properly Designing PCB Stacking

The growing demand for more compact electronics requires multilayer PCBs and a 3D design perspective. This design perspective raises new questions ...
Posted in PCB design, PCB Layer stack-up

Talking about the method of protecting the printed circuit board (PCB) from ESD damage

by Sales pcb hero

Talking about the method of protecting the printed circuit board (PCB) from ESD damage

Large steel buildings, cars, mountains, and even people can survive real atmospheric lightning. Humans can also create their own miniature lightnin...
Posted in PCB

Talking about Avago's High Power LED Emitters

by Sales pcb hero

Talking about Avago's High Power LED Emitters

ASMT-Mxxx/ASMT-Axxx/ASMTJxxx are Avago's high power LED emitters that provide high luminous flux output in very small package thicknesses. This app...
Posted in LED PCBs

What is a PCB array? How to calculate the size of an array?

by Sales pcb hero

What is a PCB array? How to calculate the size of an array?

This process is called "eviction" of a single board. It is often called "step-by-step repetition". Other terms used to describe arrays are: paneled...
Posted in PCB

About MCPCB

by Sales pcb hero

About MCPCB

Resing electronic product specifications have led to the widespread use of large-scale integrated circuit (IC) and surface mount technology ( SMT )...
Posted in MCPCB

Relay selection methods and skills, relay selection norms and standards

by Sales pcb hero

Relay selection methods and skills, relay selection norms and standards

Regarding the selection method of relays, the principles of relay first use, and common sense of relay selection, including key elements such as mo...
Posted in Relay

Small series resistance, big effect. Classification and summary of common series resistance

by Sales pcb hero

Small series resistance, big effect. Classification and summary of common series resistance

Hello everyone, I am Lisa Wang. In many circuits, small-value resistors are connected in series. Don't underestimate them, they actually play a big...
Posted in Chip, Components Sourcing

What Is the Inductance of a Trace Over a Ground Plane?

by Sales pcb hero

What Is the Inductance of a Trace Over a Ground Plane?

Key Takeaways The inductance of a PCB trace determines the strength of any crosstalk it will receive. One challenge in designing PCB interconnects...
Posted in PCB design, PCB Impedance Matching

ABCD Parameters of Transmission Lines

by Sales pcb hero

ABCD Parameters of Transmission Lines

Key Takeaways The ABCD parameters of a transmission line give the relationship of the input voltage and currents to the output voltage and current...
Posted in PCB design

What Is the Loop Inductance of a Transmission Line?

by Sales pcb hero

What Is the Loop Inductance of a Transmission Line?

Key Takeaways All transmission lines can be described with a circuit model, where parameters are determined from Maxwell’s equations. The loop ...
Posted in PCB design, PCB layout

The "softness" of flexible display screens

by Sales pcb hero

The "softness" of flexible display screens

After decades of development, the number of LED displays has been increasing. The traditional LED display is a bit too saturated, and the market gr...
Posted in FPC Flexible PCB

Common Rules for PCB Design and Routing

by Sales pcb hero

Common Rules for PCB Design and Routing

For a long time, I want to write some basic knowledge about PCB routing. A large part of the work of signal integrity is based on the setting of P...
Posted in PCB design