The choice of PCB surface coating technology used in Pcba factory for PCB welding mainly depends on the type of final assembly components. The surface treatment process will affect the production, assembly and final use of PCB.
PCB weldability surface treatment can be divided into three categories according to the purpose:
1, welding: the surface of copper must have a coating layer (coating) protection, or it is easy to oxidation;
2. Connection and insertion: for example, golden finger, electroplating ni-au or electroless ni-au;
3. Bonding process: chemical plating ni-au.