Letter 26070

Stripping silver and nickel from PCBs  

+++

We need to remove the nickel plate (immersion nickel) the finish down to the copper; what is the best chemistry to strip off the nickel from the copper leaving the copper body and key of the copper surface smooth and clean? We need to remove the silver plate (immersion silver) from copper also what is the best chemistry to strip off the silver and keep copper surface clean?

Thank you very much.

Yanlu Zhai
PCB mfgr. - Salt Lake City, Utah, USA

Answer or follow-up on this subject (in non-commercial fashion).

 

Post a new question or inquiry on a different subject.