Electronics Forum | Wed Apr 30 14:10:21 EDT 2008 | samir
Doug, yes sir there are some excellent stuff out there in the fine SMTNet archives. Here's one example: http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=9822&#Message39512
Electronics Forum | Thu May 01 13:58:31 EDT 2008 | mmjm_1099
In our house we have had some of our BGA's reballed because it was a lead-free part and wanted to place on a leaded assembly. Hope this helps.
Electronics Forum | Thu May 01 21:17:38 EDT 2008 | davef
The concern about lead contamination of lead-free solder has to with zone refining. For more, look here: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=30315
Electronics Forum | Thu May 01 21:47:12 EDT 2008 | dphilbrick
Took a couple of jumps to other threads but it was there http://www.mot.co.jp/about/ehs/green/ENV_PBFREEOV.pdf This document was exactly what I needed to send to my paranoid customer! Thanks again!
Electronics Forum | Thu May 01 12:46:19 EDT 2008 | dphilbrick
Thanks for the link Samir. Although this thread does have some good info in it I don't think it is hitting the exact point I am trying to resolve. This seems to talk to a one profile fits all for running lead and lead free paste. I want to know about
Electronics Forum | Wed Jul 14 00:50:34 EDT 2004 | Grant Petty
Hi, What's the best process for going lead free? Ordering lead free parts and using them with current paste, and then once all the parts are lead free, moving to lead free paste as well? Then the wave will be fun to change over. What a nightmare th
Electronics Forum | Tue Feb 06 06:41:53 EST 2007 | pavel_murtishev
Good afternoon, You have to use lead paste since none-RoHS components won�t withstand elevated temperatures. Solder paste manufacturers offer a lot of transitional pastes designed specially for mixed process. Ask your paste supplier for transitional
Electronics Forum | Mon Feb 12 17:05:29 EST 2007 | Jose
Today is more complicate to find components with lead than with "lead free", and the, I think that you have very feww lead components. And, if don�t work on exceptionals companies, you MUST use LEAD FREE PASTE. In one case, or in the opposite, the re
Electronics Forum | Thu May 01 14:25:31 EDT 2008 | ck_the_flip
Most white papers, like this one http://members.ipc.org/ipclogin/ipcmembers/IPC/Route/0706/0706techpaper.pdf, have written that lead contamination in a lead-free solder joint leads to all sorts of reliability problems. Consensus is that, if the cont
Electronics Forum | Thu May 01 15:42:53 EDT 2008 | ck_the_flip
Yes, the authors do give the caveat that small amount of lead contamination in a SAC/Lead-Free system is tolerated provided the Pb-BGA has sufficiently reflowed. This verbiage is on the bottom of Figure 10. For my own peace-of-mind, I would send yo
