In PCBA processing and production, there are many factors that affect the quality of SMT welding, such as PCB, electronic components, or solder paste, equipment and other problems at any place will affect the quality of SMT welding, then PCB surface treatment process will have what impact on the quality of SMT welding?

PCB surface treatment process mainly includes OSP, electric gold plating, spray tin/dip tin, gold/silver, etc., the specific choice of which process needs to be determined according to the actual product needs, PCB surface treatment is an important process step in the PCB manufacturing process, mainly to increase welding reliability and anti-corrosion and anti-oxidation role, so, PCB surface treatment process is also the main factor affecting the quality of welding!

If there is a problem with the PCB surface treatment process, then it will first lead to oxidation or contamination of the solder joint, which directly affects the reliability of the welding, resulting in poor welding, followed by the PCB surface treatment process will also affect the mechanical properties of the solder joint, such as the surface hardness is too high, it will easily lead to the solder joint falling off or solder joint cracking.