PCB Surface Immersion Silver Problem And Solution
1.The present situation
Printed circuit boards cannot be reassembled after assembly, the cost loss is very high caused by microvoid.The problem is due to PCB design defect lead to weldability,it has been verified by the original equipment manufacturer (OEM).It has nothing to do with immersion silver or other final surface treatments.
2.Root cause analysis
By analyzing the root cause of defects,