Electronics Forum | Thu Aug 05 13:03:35 EDT 1999 | Dave Weihrauch
| | | | Has anyone out there tried to parylene coat plastic parts prior to soldering them to a pcb? I'm looking at several potential applications where fewer than 5% of my components on a pcb are plastic, yet from a reliability aspect (environmental
Electronics Forum | Wed Feb 24 14:17:20 EST 2016 | rgduval
I have a customer who is rather inexperienced, and asking us for a solution for them. They have a circuit board that's roughly two inches long by 1/2" wide or so, with component placements on one end of the board. The other end has a trace that I s
Electronics Forum | Tue Nov 11 16:01:09 EST 2003 | KSimpson
Adam, As for stripping the boards.. get them right to start with. Believe me you don't want to clean them. If you have to remove the coating most conformal coating brands offer a removal agent that has been tested on most all component ranges. IF yo
Electronics Forum | Fri Mar 16 10:04:41 EDT 2012 | davef
We'd repair a drop board like this. Here's what our old friend Jeff Ferry said is a published article ... When boards lose their edge: when the corner of a circuit board breaks or is damaged, the problem cannot be ignored by Jeff Ferry One of the m
Electronics Forum | Fri Jun 18 17:18:27 EDT 1999 | Jason Gregory
| | | | Now don't everyone jump on this at once, but it seems time for me to send out copies of my not even close to being dated copy of an article about HASL. Though it was published in 1992, in Printed Circuit Fabrication Magazine, and it got rave
Electronics Forum | Fri Jun 18 17:19:48 EDT 1999 | Jason Gregory
| | | | | Now don't everyone jump on this at once, but it seems time for me to send out copies of my not even close to being dated copy of an article about HASL. Though it was published in 1992, in Printed Circuit Fabrication Magazine, and it got rav
Electronics Forum | Fri Apr 07 17:17:55 EDT 2000 | Dave F
Ashok: You should select and use low residue tapes. But ya know, ya go out and research a great tape and if yer not careful, the buyer will second source ya and (surprise) ya got residues again. We have found that Lemme say this about Katon tape
Electronics Forum | Wed Nov 19 10:11:10 EST 2003 | loz
We have just got involved in conformal coating, with mixed results. We are machine spraying and have experienced various machine issues. Another one was the consistency of the material being sprayed, we mixed it ourselves (badly?). We now buy it pre-
Electronics Forum | Mon Jun 14 21:02:50 EDT 2004 | hap
it is not practical to target an exactly 1 mil film thickness, the materials manufacturers do not give an exact solid content figure but only a target range. temperature and batch preparation also play a small role. You could probably target 1 mil p
Electronics Forum | Wed Jan 12 10:15:43 EST 2005 | davef
We conformal coat our boards and get pretty good coverage along the edges of BGA. If you need coverage along the edges and are not getting it, your supplier may be able to recommend a different material or application method. Most often, underfill
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