Electronics Forum | Mon Dec 03 10:47:11 EST 2007 | slthomas
I thought you said that the parts that weren't wetting in reflow were the parts with epoxy. The question I have is do they wet in wave solder, and if they do, why does it matter what happens to them in reflow? Conversely, if they don't wet in wave,
Electronics Forum | Thu Jul 24 07:52:58 EDT 2008 | davef
We assume the silk screen is epoxy. If so,: * Easiest: 'black-box' the undesired area by printing epoxy on top of the undesired area. You could use a stamp-pad easily. * Fairly-easy-but-messy: use a Dremmel-type tool to remove the undesired area. Thi
Electronics Forum | Tue Jan 20 11:54:12 EST 2009 | smt_guy
Is this Corrosion? We found our boards with this issue 45 days after they were delivered to us from supplier. The board finish is HAL Leaded. But I noticed that the corrosion like issues are coming form the tiny via holes with SILVER EPOXY FILLING.
Electronics Forum | Fri Apr 01 17:45:31 EDT 2011 | smt_guy
thanks for all your replies. we tried running our beta runs and have lots of issues. first our molding process which was set to 450'F temp at 1200 PSI smashed the circuit card components and penetrated the epoxy compound we used to encapsulate the C
Electronics Forum | Sat Apr 07 23:56:44 EDT 2012 | isd_jwendell
If I was to try and repair the board, I too would opt to use an adhesive and a press. I try not to use super glue for anything though, instead I would probably use a thin (low viscosity) epoxy that doesn't turn brittle after it sets. I would use a pr
Electronics Forum | Tue Apr 29 15:04:08 EDT 2014 | gregcr
Hi All, We will be building out a new production area and am looking for your opinion on what flooring system to install. We currently use ESD VCT tile that was installed about 16 years ago. The area will be SMT equipment as well as some assembl
Electronics Forum | Wed Dec 06 10:41:06 EST 2000 | Travis Slaughter
Sounds to me like they used conductive epoxy instead of plating the vias. I had to deal with boards like that when I was doing consumer electronics developed in Japan.
Electronics Forum | Wed Sep 13 15:51:43 EDT 2000 | Charlie
I'm looking for practical proceedures to do the following: How to qualify epoxy in our process. One supplier vs. another. How to qualify wave solder and flux in our process. One supplier vs. another. Any and all advice is welcome.
Electronics Forum | Wed Jun 07 10:49:38 EDT 2000 | John Thorup
Dave - let's not forget Dainippon's Novolac epoxy. This is the stuff that caused us so much grief with IC shortages years ago when their factory was damaged and it turned out they were the world's major supplier of molding compounds. This also spaw
Electronics Forum | Tue May 02 11:50:26 EDT 2000 | Dan Foose
The first step in pinpointing the exact source of the fibers is to have them identified. Are they fiber glass, epoxy or flux? Or are they something else? I can help you with this if you want. Check out mfg-answers.com\ .
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