In the process of producing connectors, many different processes are involved, and welding is one of them. When the connector product needs to be soldered, how do customers know the quality of the soldering when the product is accepted, and what does the connector soldering quality have to do with it? Let me explain to you the knowledge about the connector soldering quality.
Soldering the connector to the printed circuit board is more challenging than other components on the PCB. The size and thermal mass of the connector make welding more difficult. It may require additional residence time and higher temperatures to fully melt the solder and wet the substrate. Because of the need for higher temperature and residence time, it causes additional stress on the PBC and soldered components. This kind of strain may be inevitable, but strict adherence to the control parameters can reduce these adverse effects.
Important mechanical and electrical principles are observed when the joints need to be soldered to the PCB. Joint defects must be identified and avoided. The joint must be strong, have good integrity, and be uniform in the appearance of the substrate and the terminal. If these factors do not attract people's attention, the joints may become unreliable and cause many problems. Insufficient wetting at the mating point may leave too much oxide or contamination, leading to delamination. When there are voids or irregular growth in the metal, welding cracks may occur. These problems can lead to weak joints and must be avoided under overheating or mechanical conditions. Defects in the solder make it more and more brittle.
