Electronics Forum | Tue Jul 19 06:07:30 EDT 2005 | GS
Yes Rob, I would like to know the type of metal finisching like JST097 or IPC-1066 or IEC .... suggest to do. I would like to avoid i.e. to get Bismuth finish on components terminals that I still have to solder with alloy containing Pb. Also to ha
Electronics Forum | Fri Jul 08 09:40:28 EDT 2005 | Jason Fullerton
"The only real problem we're seeing is some suppliers trying to use bismuth. That's a big no-no in a SnPb process and we won't accept those parts." Yes and no. Since the SnPbBi tertiary alloy melts at 96 degC, any product rated for storage above tha
Electronics Forum | Thu Mar 12 06:37:48 EDT 2009 | gregoryyork
I agree you are too cold for the profile get it up to 230C and possibly allow it to dwell a little longer in preheat as opposed to pushing up the reflow zone only. Sn90/Pb10 melts at 220C so 2C hotter than your profile so you are reliant on it alloyi
Electronics Forum | Thu Mar 23 12:11:20 EST 2006 | patrickbruneel
Here's a (427 page) EPA report on Solders in Electronics: A Life-Cycle Assessment http://www.epa.gov/opptintr/dfe/pubs/solder/lca/lfs-lca-final.pdf If you look at page ES-16/table ES-4 and ES-5 it appears that SAC alloys have a higher impact on the
Electronics Forum | Thu Oct 04 15:43:46 EDT 2007 | bigdaddysoy9
Hello What type of error proofing methods are you guys using to prevent operators from using lead paste on a PB free application?
Electronics Forum | Tue Oct 23 14:24:04 EDT 2007 | ratsalad
Who is your stencil vendor? I've used three different vendors for Pb-free green frame stencils and NONE of them charged extra.
Electronics Forum | Thu Oct 04 16:12:52 EDT 2007 | mike007
Use dedicated stencils & gold or green squeegee holders
Electronics Forum | Thu Oct 04 16:00:01 EDT 2007 | hussman
Paint no-lead stuff green and carry a big stick.
Electronics Forum | Tue Jan 31 12:13:26 EST 2006 | Calvin Kolokoy
Today's regular Sn-Pb paste chemistries are designed to run at higher peak temperatures ensuring that your lead-free alloys will coalesce with your regular Sn-Pb solder. That being said, it is do-able to solder both types in one oven. Generally, wit
Electronics Forum | Fri Oct 05 10:59:22 EDT 2007 | patrickbruneel
I�ve stayed out of the lead-free discussions as much as possible. But it�s great to note that someone (Mike) suggests a different color.
