Knowledge

Do you know the four special electroplating methods in the circuit board prod...

There are four special electroplating methods in the production of circuit boards, which refer to the electroplating equipment, coating electroplating, and rolling wheels. This art

What is the material of the car connector

The quality and reliability of automotive connector materials are related to the quality and reliability of the connectors. The materials of automotive connectors should not only b

What are the PCB board dry films

Dry film is a polymer material that can block the functions of electroplating and etching. The reaction principle is that after the polymerization reaction is carried out by ultrav

How to do heat test for PCB board

In order to ensure the quality of the PCB circuit board, it is necessary to carry out a temperature resistance test. The purpose is to prevent the PCB from experiencing adverse rea

What is the main point of FPC fake stickers, hot pressing and screen printing...

Fake post Fake sticky protective film, strong board and back glue; the protective film mainly has the functions of insulating, protecting the circuit against soldering, and increas

What problems are usually encountered when PCB nickel plating solution is used

On PCBs, nickel is used as a substrate coating for precious and base metals. PCB‍Low stress nickel deposition layer is usually plated with a modified Watt nickel bath and some sulf

How to perform extreme temperature test of PCB circuit board?

In the production process of the PCB circuit board, because the printed solder paste and the unsoldered PCB assembly board cannot fix the test end of the thermocouple, it is necess

What are the common problems of copper plating technology in PCB process? The...

Electroplating copper is the most widely used pre-coating to improve the bonding force of the coating. The copper coating is an important part of the copper/nickel/chromium system

What is the difference between immersion AG plating and gold-plated plate

There are several treatment processes on the surface of the circuit board: light board (no surface treatment), rosin board, OSP (organic solder protectant, slightly better than ros

What are the advantages and disadvantages of FPC using OSP process

Pure copper is easily oxidized if exposed to the air, and the outer layer of the circuit board must have a protective layer. Therefore, surface treatment is required in circuit boa

Reasons in damage or penetration of dry film of pcb board and its improvement

The wiring of the PCB board is very precise, and many PCB manufacturers use the dry film process to transfer the circuit pattern. Below, I will explain in detail the reasons for th

What problems will occur in the PCB punching process

Punching is a relatively important process in PCB circuit board proofing, so what problems will occur in the PCB punching process? Let's take a look at the following. 1. Rough