Electronics Forum | Tue Sep 09 13:13:38 EDT 2008 | vladig
Silver (Ag). It's a typical composition Regards, Vlad
Electronics Forum | Wed Sep 10 17:12:05 EDT 2008 | vladig
That is exactly what I said. Rarely belongs to Cu or Ni :-) Vlad
Electronics Forum | Wed Sep 10 17:21:08 EDT 2008 | gregoryyork
Strange we use the 179~C eutectic 62/36/2 solder paste as standard in Europe. It is indeed 2% Ag in fact we dont sell 63/37 paste or very rarely. I think if you mix a little 60/40 powder with the 2% Ag alloy this overcomes the tombstoning problem.
Electronics Forum | Wed Feb 20 16:55:52 EST 2008 | flipit
Pd/Ag doesn't usually dissolve (leach) nearly as bad as Ag only. In my hybrid days, we would use 62/36/2 solder. The 2% silver helps saturate the solder joint and thus keep the Ag from being leached away by the Sn.
Electronics Forum | Thu Jun 02 06:23:08 EDT 2011 | alcatel
1 chip has 2 solder pads....and both pads definitely has solder.... im not getting what you are trying to say.
Electronics Forum | Thu Jun 02 06:23:40 EDT 2011 | alcatel
1 chip has 2 solder pads....and both pads definitely has solder.... im not getting what you are trying to say.
Electronics Forum | Tue Dec 14 03:26:09 EST 1999 | Chris May
Steve, Two good reference books to have are 1) SMT Soldering Handbook by Rudlof Strauss (ISBN 0-7506-3589-4) 2) Soldering In Electronics by R.J. Klein Wassink( ISBN 0-901150-24-x) Regards, Chris
Electronics Forum | Mon Jan 11 16:16:52 EST 1999 | Jenna Sweterlitsch
This question is directed to anyone having eperience with Sn62Pb36Ag2 solder balls for BGA's. Have you seen anything like a rough, raisin-like surface texture after ball attach? If so, what did you do about it? Thanks!
Electronics Forum | Tue May 06 22:31:52 EDT 2003 | yukim
Yes, we did try: built a lot of 200 PCBs with Sn62Ag2 solder paste (we have been using Sn63) and it helped, but not eliminated the problem.
Electronics Forum | Wed May 21 14:16:40 EDT 2003 | caldon
Dyann- There are two companies I have used in the past. 1) ACI in Philadelphia - Guy Ramsey 610-362-1200; Gramsey@aciusa.org 2) Soldering Technology - Mel Parrish 256.461.9191; http://www.solderingtech.com Cal Communications Test Design, Inc www.CTD
