We've tried this a few times and found that w/normal use that a corrosion product forms that leads to increased resistance/intermittent opens. We don't allow tinned parts in sockets. Jim Maguire Boeing (206)657-9063 ______________________________ Reply Separator _________________________________ Subject: assy:compatability gold vs tin/lead Author: [log in to unmask] at esdigate Date: 5/22/96 9:07 AM We have instances where tin/lead coated pins are inserted into gold plated sockets, etc. Components even have gold/tin-lead or gold/tin interfaces, such as an IC socket with a gold contact with a tin sleeve. Mil-Std-889B indicates gold as being incompatable with tin or tin/lead. Has anyone looked into this issue and is there a potential for corrosion formation and associated problems? Again, I just refereing to mechanical contact ( not soldering ). Thanks, Jack Tippit Wilcox Electric [log in to unmask]