Electronics Forum | Thu Jan 10 09:23:20 EST 2008 | jdumont
Looking for some opinions on what the best, readily available, Alpha lead free water sol paste is out there. Only thing I can see on their website is the WS-819. Anyone with experience with this? We currently are using the OM-338 NC which works great
Electronics Forum | Mon Aug 27 12:31:04 EDT 2012 | rway
Its no my turn to give some advise. My first > question would be can you put the boards into a > carrier of some sort. There are many wonderful > companies that make carriers that are ment for > running down a smt line. This can be expensive > u
Electronics Forum | Wed Nov 30 11:43:15 EST 2005 | russ
You will be fine as long as you don't run BGAs this way. I would imagine that you have already been doing this for some time already. You might need to increase peak temp and or time with some of the lead finishes.
Electronics Forum | Thu Jan 05 17:10:04 EST 2006 | russ
The CCGA packages that we install are still a tin/lead alloy and not a SAC alloy. They were 90/10 SN/PB. I beleive that this may be one reason why the difference.
Electronics Forum | Fri Jan 26 09:49:53 EST 2007 | dyoungquist
You should have no problem using lead-free components with tin-lead solder. Is your reflow oven IR or hot air? If you are using an IR oven and the components are white or light colored, they may not be heating up enough for the solder to flow on
Electronics Forum | Mon Mar 08 11:42:05 EST 2004 | Jay
Sn-Ag, Sn-Sb, and Sn-Cu based lead free alloys have a higher melting point than that of Sn-Pb eutectic system. Thus, it will be better if you can use a higher TG PCB for lead free purpose. But, also most of commercial products including SAC can be
Electronics Forum | Sat Dec 01 21:59:35 EST 2007 | kenferrer
Hi Eng. Yumex in our company we're using 9 zones air convection oven. When the technology on Lead Free came along conversion from non-lead free to lead free viceversa was frequently done but there's no problem on contamination. Where is your company
Electronics Forum | Fri Jun 06 22:10:11 EDT 2003 | MA/NY DDave
Hi John I believe gave a good answer with cautions. The .001 or .1% is the main criteria that internationally means you are Lead-free per JEITA, the EU and NEMI. They sat around at a table and decided is how they got the .1% John did note that yo
Electronics Forum | Thu Dec 15 12:10:07 EST 2005 | muse95
It should be the other way around. A Pb BGA ball will fully melt in a Pb free process, but a Pb free BGA ball will not fully melt in a Pb process, which means the Pb from the paste on the board will not fully diffuse through the ball. This leads to
Electronics Forum | Wed Jun 11 13:11:33 EDT 2008 | namruht
We are currently completely building lead based assemblies. We are going to start doing our homework based on Management request. I have a pretty strange question that I was asked but really did not have an answer to. Can a Lead-Free assembly have a
