NASA has determined that zinc plating can generate "whiskers" much the same way as tin.
Go to:  http://www.nepp.nasa.gov/NPSL/Prohibited/zinc_prohibition.htm
for more info.

David A. Douthit
Manager
LoCan LLC

Victor Hernandez wrote:

 

Fellow TechNetters:

   What are the exposures of having or selecting a ZINC plating finish for an ELECTRICAL CONTACT such as a solder less
crimp connector and straight pin connector.   What can occur if these finishes are mixed mated with a SnPb or Sn finish surface.

Victor,
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