PCB circuit board, called printed circuit board in Chinese, or printed circuit board, occupies an important electronic component in the electronics industry. It is the electrical and signal connection and propagation carrier of electronic components and the support of electronic components. It is ma

It is more complicated that the pads on the surface of the circuit board are not tinned. Taking the process of tinning the pads in the early stage of the board manufacturing process is not an easy task. Below, VIASION Technology will answer this phenomenon for you.

Shenzhen Viasion Electronics is a PCB manufacturer with more than ten years of PCB manufacturing experience. It specializes in PCB proofing, circuit board proofing, impedance board, HDI board, blind buried via board and other multilayer PCB board proofing and small batch production. Next, I will in

The positive film of the circuit board: generally the pattern process we are talking about, the liquid used is an alkaline etching positive film. If the negative film is used, the desired line or copper surface is black, and the part is transparent, and the same is true. After exposure by the line p