We're writing a PCB spec and some of our folks are concerned with immersion tin plating thickness. We use a lot of press fit connectors (almost exclusively with imm Sn), and the concern is that the thicker the tin plating, the higher the probability of whiskering. Does anyone know of any studies relating whisker formation to plating thickness? Lynn Norman Materials Engineer Continental Automotive ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ