Electronics Forum | Thu Jul 05 09:27:05 EDT 2001 | blnorman
Our solder ball problem is linked to moisture. If the paste sits on the board too long (especially during our humid summer months) we experience the problem. As far as the problem being specific to components or areas of the board, maybe some of th
Electronics Forum | Fri Feb 14 09:30:00 EST 2003 | blnorman
We currently use Epibond 7275 with MPM printers. Unfortunately we've had problems with Vantico (formerly Ciba) providing a consistent product. Last summer we had extreme difficulty printing due to excessively high adhesive viscosity (20% higher tha
Electronics Forum | Fri Jul 02 17:08:58 EDT 2004 | blnorman
We used to use Alpha paste. Every summer we had solder ball problems when the humidity rose. Time frame sounds like this is something to check in to.
Electronics Forum | Thu Sep 02 09:29:25 EDT 2004 | frankracine
Hi laxman, Only to answer one of your question, actually almost 50% of component we use switch to lead free alloys. We receive confirmation for transition to lead free of at least 10 components per day. So, Yes I think all component will be ready
Electronics Forum | Thu Jun 23 09:33:02 EDT 2005 | jdumont
Hi all, we will be moving our pcb production to a different (newer) part of the plant this summer in an effort to reduce dust and better control the temp/humidity. What can I install to keep the dust down? Are there air exchangers/filters for a room
Electronics Forum | Thu Aug 11 11:22:17 EDT 2005 | slthomas
Thanks, Bob. I kind of figured that if anyone could help, you could. I'm not at work today (fighting some mysterious summer bug that's hung with me for a month now) but I'll see if anyone at Quad remembers the IIIc on my next day in.
Electronics Forum | Tue Dec 16 17:07:46 EST 2008 | stepheniii
NEW ban proposal? It was exempted from ROHS and that exemption was lifted during the summer. I made a post about it no longer being allowed back in July. Here's a link I posted. http://www.rsjtechnical.com/NewsDecaBDE.htm
Electronics Forum | Thu Apr 16 11:58:20 EDT 2009 | ccross
We have seen this exact same problem. Our vendor agreed it was their problem and also agreed it was a moisture issue within the PCB layers, not the solder mask. We have taken to baking our boards, especially when they are manufactured during the late
Electronics Forum | Tue Aug 15 07:27:03 EDT 2017 | emeto
Most important factor - temperature. Back in the days I worked for a place without AC, and summer time this paste couldn't make it for more than an hour. In controlled environment you will be safe for hours or even a shift.
Electronics Forum | Fri Dec 20 17:14:57 EST 2019 | slthomas
Yeah, I can't imagine our AC having nearly enough head room to handle that additional heat load in the summer.
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