In PCB circuit board design, the definition of PCB layer is as follows: 1. Top layer (Top Layer): is also called componen
2020-11-24No debris is allowed in PCBA patch processing, the welding surface must not be polluted, and the welding must not be confused
2020-11-24Surface assembly quality inspection is a very important link in SMT production. It is a description of the degree to which th
2020-11-24