Electronics Forum | Thu Jun 05 18:11:53 EDT 2008 | jlawson
Also coating costs depends on solids content vs final dry film thickness. Some newer UV coatings are 100% solids, so what you put down you get on the PCB after cure, use no solvents at all. So a cost to look at are qty of PCB per litre of material. T
Electronics Forum | Wed Feb 19 06:16:53 EST 2014 | cunningham
Yeh due to the solvents in the coatings im guessing there is a health and safety risk. Solvent stripping is a lengthy process for the coatings we use and usually means submerging the whole board so not local to the rework. We have a booth with ioni
Electronics Forum | Tue Jan 24 19:00:15 EST 2006 | MikeF
Graham Naisbitt is definitely an expert on conformal coating, he has posted answers here for years. Check your material to see what the cure mechanism is. Most urethanes need moisture from the air to cure, the higher the relative humidity the faste
Electronics Forum | Thu Feb 01 07:41:01 EST 2018 | dontfeedphils
Interesting, never heard of using wax as a coating mask. Not sure how well the AR coating would hold up to a hot alkaline wash (unless you have experience with it), but that stuff usually starts to flake off/de-wet if you just look at it wrong. I'm
Electronics Forum | Mon Jan 29 20:25:54 EST 2001 | davef
I know you're talking Humiseal, but this may help http://www.loctite.com/electronics/elec_tech_index.html Conformal Coatings (PDF Documents) "Conformal Coating Overview" (Lester D. Bennington, Senior Development Chemist and David Crossan, Manager
Electronics Forum | Wed Dec 02 14:54:52 EST 2009 | jdumont
Hi all, just wondering what type of brushes you all are using to manually touch up/apply your conformal coatings? We use an solvent based acrylic and do minor touch ups as they are processed. Occasionally we will have a bristle or two come off the
Electronics Forum | Wed Jun 17 16:54:07 EDT 2009 | jlawson
I am rep for SCS and can state.... Another system provider is SCS (Specialty Coating systems) Precision Coat Systems. Have a stable robust XYZ platform, standalone, inline configuration, Spray + Dispense and can offer Ultrasonic Nozzle Options if re
Electronics Forum | Fri Sep 09 15:53:22 EDT 2005 | patrickbruneel
If the white residue is from a no-clean flux or no- clean solder flux core you can leave it on the board. (Consult with the flux or cored solder manufacturer) Because after being encapsulated with conformal coating the residue is sealed from humidity
Electronics Forum | Thu Jan 11 09:23:32 EST 2007 | mscalzo3
BE, Flux coating helps as there is no solvent to volatize. Also, we offer vacuum-cast preforms that will eliminate the possibility of the voids comimg from the alloy itself. I can email a PDF of some profiles, all I need your email address. You c
Electronics Forum | Wed May 16 08:26:34 EDT 2007 | davef
It's possible that your lead-free solder will stick to mounting bolts more than SnPb solder. Lead-free solder has a high tin content. Tin is a very good solvent. You may need to coat the bolts with a solder mask to prevent the solder from sticking.
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