Electronics Forum | Fri Feb 20 17:04:26 EST 2004 | Long
Hi I am looking for some type of peelable mask or plug to cover the connector during the conformal coating. The problem we have is the moisture get into system and eventually penetrate under the connector creating short circuit to the board. What I r
Electronics Forum | Fri Feb 20 18:18:37 EST 2004 | davef
Pls email yer pix
Electronics Forum | Mon Sep 19 09:46:32 EDT 2011 | blnorman
Hopefully the coating does contain a UV tracer. We used a silicone years ago that did not, but UV did make it fluoresce to a degree, you just couldn't ensure 100% coverage. One time we did have a problem with the coating getting on connector pins,
Electronics Forum | Wed Jul 02 02:46:44 EDT 2008 | tang
Hi Guys, I have few question would like to ask regarding pcb conformal coating: 1. Can I know which masking material is the best for easy apply, fast cure, fast & easy to remove after coating & baking. And no chemical reaction which will whiten the
Electronics Forum | Fri Dec 03 15:56:47 EST 2004 | Indy
Hi Everyone, Could someone please tell me - What happens if a N-type connector having chromate coating over silver plating is hand soldering to a PCB. Does the Chromate coating form a compound with silver, Or does it come off while cleaning excess
Electronics Forum | Sat Dec 04 08:30:18 EST 2004 | davef
We're unaware of any such reaction. The RoHS Directive bans the use of six hazardous materials. The materials are four metals: lead, cadmium, hexavalent chromium, and mercury; and two brominated flame retardants: polybrominated biphenyls (PBB) and p
Electronics Forum | Wed Sep 04 22:48:13 EDT 2013 | winson16
SMT fine pitch connector having oxidation on lead and P&P machine keep rejecting the part. Is there any alternative way to reduce the part throw out rate without jeopardize the placement accuracy? Or is it possible to re-coat the connector lead or an
Electronics Forum | Thu Feb 25 10:21:49 EST 2010 | jdumont
My guess would be that the adhesive used on the dots contains silicone. We use 1B73 which is also acrylic and it hates silicone. We use silicone RTV to permanently mask around some connectors and unless its fully cured before coating it will cause l
Electronics Forum | Thu Sep 05 22:01:55 EDT 2013 | davef
Questions are: * How did you determine that the coating on your component leads is oxidation? * What is the oxide? BR, davef
Electronics Forum | Fri Sep 06 14:03:18 EDT 2013 | horchak
If you are a CEM you are setting yourself up for failure and will be left holding the bag. Flash gold has one purpose. It is a protective coating for the base medal to keep it from oxidizing. It is very thin and will be absorbed into the solder joint
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