Electronics Forum | Thu Feb 26 21:35:21 EST 2015 | flyingsnow
Hi, has anyone experienced discoloration of cured non-conductive epoxy? It turned from white to deep red. The parts were returned from customer and we noticed the color change and wondered what could cause epoxy discoloration.Thank you!
Electronics Forum | hhudson |
Sat Jan 27 17:31:29 EST 2024
Electronics Forum | Thu Feb 24 16:14:46 EST 2005 | davef
Rob: Why aren't the board houses over there going to lead-free HASL [not that HASL is the most wonderful thing on the planet]? What's the price delta on an unit basis for a x-HASL, now imm Ag board? Anyhow back to the point, so, you're proposing t
Electronics Forum | Mon Nov 11 11:28:32 EST 2002 | davef
Sand is not a great conductor, compared to copper. Never heard of using the stuff on RF boards. Our board fabricator uses Dupont CP100, now CP101, [or something like that cuse who's going to check?] when plugging via on cheap boards. Your board fa
Electronics Forum | Mon Feb 28 08:06:49 EST 2005 | davef
You'll be able to tell pretty soon if this will work. * Our bet is the epoxy will corrode the silver. * Another concern is that you're not fusing the silver to the copper. Why not ask the imm silver suppliers: * Alpha Level Silver [ http://www.al
Electronics Forum | Thu Apr 29 18:48:11 EDT 1999 | Kiet Dang
Hi, Did anyone experience a problem with electrically conductive silver filled epoxy is resistive due to galvanic reaction? I'm having this problem when attaching components to Ni plated housing while conducting an experiment to cost reduction for Au
Electronics Forum | Wed May 20 05:50:08 EDT 2020 | tima
Hello colleagues, Question. Who ever done 4 mil (100uM) electro conductive epoxy dispensing? is it even possible? I did 6 mil but very unstable results... Now I need 4 mil for an application.
Electronics Forum | Fri Apr 02 00:16:18 EST 2004 | Mike Konrad
There is no shortage of reasons to clean your boards. Soldering or reflowing your boards leaves �stuff� on them. This �stuff� is normally corrosive and conductive (some fluxes / pastes are more corrosive / conductive than others). In either case,
Electronics Forum | Thu Aug 05 10:38:49 EDT 2004 | iggyslab
Is there a specific epoxy that is most suitable for sealing a polycarbonate chamber, which will have hydrogen flowing through it at no greater than 10psi? Can any epoxy that provides a watertight seal be used for hydrogen applications? We have th
Electronics Forum | Thu Dec 07 19:54:55 EST 2006 | davef
We agree with "guest" above. This a "chip bonder" type material used to improve the reliability of array type devices. "A relative comparison of the N50 values is given below: No underfill = 1.0X (baseline) Corner bond = 1.3X Non reworkable underfi