Electronics Forum | Wed Jul 20 10:07:05 EDT 2005 | cecil
Does anyone have any input on the need to bake out an assembly prior to the conformal coat process? I understand baking out components/pwb's prior to processing through the reflow or wave solder process if the material shows excess moisture absorbtio
Electronics Forum | Thu Sep 08 14:16:24 EDT 2005 | pjc
Try contacting Humiseal. They are BIG in conformal coating materials: http://www.humiseal.com/
Electronics Forum | Thu Sep 08 17:31:09 EDT 2005 | davef
Urethane CC have greater resistance to solvents than acrylic CC
Electronics Forum | Thu Sep 08 18:41:17 EDT 2005 | bhu
Try parylene. http://www.vp-scientific.com/parylene_properties.htm
Electronics Forum | Fri Sep 09 07:39:40 EDT 2005 | Slaine
we use humiseal for military a customer, in an aerosol can, gives good results
Electronics Forum | Thu Sep 08 11:34:24 EDT 2005 | prod eng
I wonder if anybody could spec a conformal coating or simalar application, to protect PCB's at 90% humidity. Standard HPA from electrolube does not work if the humidity is in excess of 75%. Cheers
Electronics Forum | Thu Aug 27 11:35:07 EDT 2009 | davef
There are many possibilities: * Conformal coat is incompatible with surface residue on the board * Conformal coat is incompatible with solder mask on the board * Moisture is out-gassing from the board * Conformal coat is too thick and does not allow
Electronics Forum | Thu Aug 27 08:34:50 EDT 2009 | floydf
I am having trouble with little air bubbles in my conformal coat. It ranges from a few pin sized bubble to looking like spit. We are using Dow 2620 silicone conformal coat applied with a PVA sprayer machine. The conformal coat comes in bladder bags t
Electronics Forum | Fri Oct 09 16:07:30 EDT 2009 | dlabelle
We use Dow 2620 silicone conformal coat applied with PVA1000 sprayer machine. If used on a daily bases, we have no problem. If we let the machine sit idle for over a week, we will get bubbles in the conformal coating. Sometimes, purging the line w
Electronics Forum | Mon Jan 28 11:50:23 EST 2013 | johng
Good morning Mark, No issues around the masking at this point. The issue seem to be in open areas as well as between clad runs. We are using Humiseal 1A33 Conformal Coat.
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