dbrandler, Tin whiskers occurs with pure elements only. Immersion tin uses very small amounts of bismuth to "contaminate" pure tin. The now impure tin will not form whiskers. The impure tin is further contaminated by the addition of lead upon soldering. (I have seen a reference that SnPb will form whiskers, but I don't believe it). Ryan G. > -----Original Message----- > From: dbrandler [SMTP:[log in to unmask]] > Sent: Thursday, February 10, 2000 1:18 PM > To: [log in to unmask] > Subject: Re: [TN] White Tin PWB > > Hello, > I'm curious. What happened to the tin whisker problem? Dan Brandler. > > ############################################################## > TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c > ############################################################## > To subscribe/unsubscribe, send a message to [log in to unmask] with > following text in > the body: > To subscribe: SUBSCRIBE TECHNET <your full name> > To unsubscribe: SIGNOFF TECHNET > ############################################################## > Please visit IPC web site (http://www.ipc.org/html/forum.htm) for > additional > information. > If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or > 847-509-9700 ext.5365 > ############################################################## ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################