Electronics Forum: coating materials (Page 6 of 42)

Bubbles on solder joint(after conformal coating curing)

Electronics Forum | Thu Nov 19 22:48:22 EST 2009 | davef

Since the bubbles: * Are only on the solder connection, we'd guess there must be some compatibility issue between the flux residues and the conformal coat materials. * Occur after curing, we'd guess the cure recipe is too rapid and is entrapping voli

A concern about conformal coating height

Electronics Forum | Fri Jul 06 10:08:21 EDT 2007 | blnorman

The coating thickness is more a property of the individual coating itself. The 0.03 - 0.13 is based on average properties of acrylics in general. It's like trying to pour 3 mils of motor oil on a table. The material will find it's own thickness.

Bubbles on solder joint(after conformal coating curing)

Electronics Forum | Fri Dec 18 09:27:51 EST 2009 | sforman1

Tom: Once again - why are you using solvent based conformal coating. 1B31 is OK as a CC but it contains Toluene and MEK!! It is only 35% solids which means you are trying to get rid of 65% solvent. If you must use it due to customers requirement then

RoHS Compliance of Chormium coating on connectors

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

conformal coating - masking problem with ammonia

Electronics Forum | Fri May 15 19:08:25 EDT 2009 | jlawson

Ammonia based masks can create solderability issues after they are removed. You can get non-ammonia based latex mask material but down side is slower cure and cost a little more as they have higher levels of latex etc

Bubbles on solder joint(after conformal coating curing)

Electronics Forum | Mon Nov 30 23:11:50 EST 2009 | prodivegsr

Hi sforman1 Are you refering that the UV is able to cure on solvent based material too ?

Is anyone conformal coating flex circuits?

Electronics Forum | Fri Jul 24 16:39:16 EDT 2015 | cnotebaert

have done it in the past, used silicon as it will flex,, however its not the most robust material! tends to peel/flake off.

Conformal coating to avoid oil leak from circuit board

Electronics Forum | Sun Nov 10 15:36:06 EST 2013 | davef

Assuming your conformal coating material was selected with the intent of living a life in contact with oil, why doesn't your coating meet the IPC-A-610D requirement of that there be no voiding, no breaks in the surface, no loss of adhesion, etc? Furt

Re: Adhesion of conformal coating to plastic components

Electronics Forum | Wed Jun 03 07:13:27 EDT 1998 | Tom Tellinghuisen

We have experienced poor adhesion of acrylic conformal coating to plastic bodied IC�s. The observed symptoms of this are a blistering or lifting of the coating at the surface of the component, although peel testing has revealed that this is not al

Humiseal 1A33 conformal coating using automated atomized spray

Electronics Forum | Tue Jul 03 01:54:42 EDT 2018 | rdhiman1

Reaching out to all conformal coating experts, please help! While setting up conformal coating using the automated atomized spray, we observing issues associated with conformal coating wetting on the following regions: 1) Component edges 2) Metalli

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