Lily's Column

What is Reflow Soldering?

by Lily Zhang

What is Reflow Soldering?

Scheme of a reflow soldering process: Step 1 Solder paste printing:After mixing and acclimating the solder paste, it is manually/automatically app...
Posted in PCB, pcba, smt

What is a HDI PCB ?

by Lily Zhang

What is a HDI PCB ?

HDI stands for High-Density Interconnector. Thus, HDI PCB is a special type of PCB that has the capability of high-density interconnections. In sim...
Posted in HDI PCB, PCB, PCB fabrication

How to Reverse Engineer a Schematic From a Circuit Board

by Lily Zhang

How to Reverse Engineer a Schematic From a Circuit Board

This project is a result of needing to service a domestic electronic item without being able to obtain a circuit diagram.The process proved to be v...
Posted in PCB, PCB design, PCB fabrication, reverse engineer, Reverse Engineering

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

Metal Core PCB

by Lily Zhang

Metal Core PCB

What is a metal core PCB? A metal core printed circuit board (MCPCB) also known as thermal PCB, incorporates a metal material as its base as o...
Posted in MCPCB, PCB, PCB fabrication

PCB Impedance Design

by Lily Zhang

PCB Impedance Design

It is suitable for most PCB suppliers’ process standards and PCB board design with impedance control requirements. 1). 2 Layers Impedance Design 10...
Posted in Impedance Control PCB, PCB, PCB design, PCB fabrication, PCB Impedance Matching

How to make PCB with blind hole

by Lily Zhang

How to make PCB with blind hole

The use of blind holes and buried holes is an effective method to increase the density of multilayer boards, reduce the number of layers and board ...
Posted in PCB, PCB design, PCB fabrication

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

Staggered Microvias and Stacked Microvias PCB

by Lily Zhang

Staggered Microvias and Stacked Microvias PCB

What are staggered vias? Staggered vias connect different layers of the board but do not come in direct contact with each other (separate drill axi...
Posted in PCB, PCB design, PCB fabrication

Production Flow of Flex-Rigid PCB

by Lily Zhang

Production Flow of Flex-Rigid PCB

What is a Flex-rigid PCB? The birth and development of FPC and PCB gave birth to the new product of flexible and rigid printed circuit board. So...
Posted in PCB, PCB fabrication, rigid-flex pcb

Equipments which required on PCB production process

by Lily Zhang

Equipments which required on PCB production process

1.Engineering production—photoplotter, film exposure machine 2. Cutting material — cutting machine, baking oven 3. Laminating – browning production...
Posted in PCB, PCB fabrication, PCB manufacturing

PCB Drilling

by Lily Zhang

PCB Drilling

The PCB Drill Tech Basically, there are two kinds of drilling technologies, mechanical and laser drilling. Mechanical and laser drilling compariso...
Posted in PCB, PCB fabrication, PCB manufacturing, PCB Milling