Electronics Forum | Mon Dec 19 12:23:49 EST 2005 | Amol Kane
there are no issues with running leaded lead free parts with snpb solder. the problem arises when lead-free BGAs are run with SnPb solder. running hotter (i.e mimicing the SAC reflow profile)merely ensures that the sac solder melts and mixes with the
Electronics Forum | Wed Oct 04 13:58:38 EDT 2006 | cw
hi Dave.F and All, I need to reflow SCA solder balls on Sn/Pb paste, i get a pretty OK solder wetting and collapse apperance, however, i am seeing voids everywhere, some of them is greater than 25-30%, which has exceeded IPC standard. Please advise.
Electronics Forum | Thu Apr 17 07:57:07 EDT 2008 | GSx
Those components can be soldered at both SnPb and Pb Free Reflow process. In case you will submit them to Pb Free Reflow temperature you must treat those components as MSL-3 In case you will submit them to SnPb Reflow temperature, you must treat t
Electronics Forum | Thu Jul 31 20:01:08 EDT 2008 | crashoveride
Hi guys! We just had our SnPb wave solder samples tested. However, the papers just gave us the contents and the percentage of each contents found with the sample. Does anybody know the passing range and/or paramters of the following elements: Pb, Cu,
Electronics Forum | Fri Apr 20 07:54:25 EDT 2007 | Bob R.
I'm in the high reliability (exempt) sector and have thermal cycled hundreds of boards in the past few years. As far as which is more reliable, SnPb or SAC305, my data is similar to what the technical literature is saying, "It Depends". In low stra
Electronics Forum | Sun Jun 27 06:27:15 EDT 1999 | Vic Lau
| I am looking for a way to clean solder off of QFP packages. I'm thinking a chemical method would be easy, as long as the chemistry doesn't attack the leads themselves, or the package. | Any suggestions? | Dear Matt, I have a customer, who is com
Electronics Forum | Mon Jun 28 14:36:34 EDT 1999 | John Thorup
| | I am looking for a way to clean solder off of QFP packages. I'm thinking a chemical method would be easy, as long as the chemistry doesn't attack the leads themselves, or the package. | | Any suggestions? | | | Dear Matt, | | I have a customer
Electronics Forum | Mon Apr 23 16:28:36 EDT 2007 | patrickbruneel
Chris, WEEE is great but RoHS doesn�t make since, here�s a couple of threads covering similar issues. http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=10341&#Message41486 http://www.smtnet.com//forums/index.cfm?fuse
Electronics Forum | Sat Jul 28 08:37:52 EDT 2007 | davef
There is no good choice. Board Finishes: Industrial/Battelle Class 3 Environment [Reliability Knowledge Gaps: For use of Pb-free solders in High Reliability Applications, J Smetana, iNEMI Availability of SnPb-Compatible BGAs Workshop, March 1, 2007,
Electronics Forum | Fri May 02 16:20:35 EDT 2008 | rwyman
We've never, to my knowledge, sent out Pb-free BGAs to be reballed for use on an SnPb assembly. In fact, we developed an in-house reballing process and we haven't felt the need to do that either (for salvaging an occasional reworked part, maybe).
