Michael Sokolov wrote: > Hello again, > > Thanks to everyone who has replied to my query! > > I have a few additional questions though: > > 1. What about the tin whiskers? Will they be eliminated by using SnPb > solder, or will they always remain a potential problem when one is > forced to use a Pb-free part?
No, because the lead solder only wicks up the leads so far. The crinkles made by the crystalization make perfect launching points for whiskers. > >> It is fun to watch the RoHS parts as they reach soldering temperature. >> the shiny finish turns to a mossy crinkle finish, like a wrinkle finish >> paint job. What you are seeing is the electroplated finish crystalize. > > That's what I was referring to above -- if I use the standard (lower > temperature) SnPb process, the above will never happen, right? No one solders at exactly the melting point of the solder. I use a 350C iron to melt 67/37 solder. 350C is easily hot enough to melt the non lead solder. It just isn't hot enough to make it pretty. -Chuck Harris _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
