Electronics Forum: joint crack conformal coated (Page 1 of 10)

uv stable conformal coating

Electronics Forum | Tue Jan 13 16:40:03 EST 2004 | Jacob Lacourse

Hi folks, I have a conformal coating application where I need the coating to be UV stable for a number of years without any crazing or cracking of the coating. I have looked for such a coating and have come up empty handed. Much of the circuit boar

Inspect workmanship through conformal coating

Electronics Forum | Sun Sep 04 13:16:44 EDT 2016 | danhhunter

Is it possible and does any standard cover inspecting soldering joints through conformal coating?

Silicon contamination in solder joint

Electronics Forum | Tue May 27 11:59:14 EDT 2003 | blnorman

Is anyone aware of any reports, studies, articles on the subject of silicon contamination in SnPb solder joints. We are evaluating repair of conformally coated (silicone) boards. The fear is that we will never totally remove the silicone and once i

Inspect workmanship through conformal coating

Electronics Forum | Wed Sep 07 16:31:26 EDT 2016 | mnorthey

You can inspect joints using an X-ray machine and we use a sand-blaster type machine which blasts (Starch) to remove the conformal coating. (Carbo Blast). However; the inspection should be done prior to Coating, as we all know some jobs are rushed t

Re: Clean before conformal coating?

Electronics Forum | Fri Jan 05 12:01:26 EST 2001 | Jim M

I've been involved with no-clean flux and conformal coat in the past.It has been my experience that the amount of no-clean flux used is proportionate to how well the conformal coat adheres to the boards.No clean paste did not affect adhesion. The co

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.

BGA underfill necessary with conformal coat?

Electronics Forum | Mon Apr 01 13:00:27 EST 2002 | BTaylor

We had a problem with conformal coating getting under an IC and with Temp. and vibration would cause cracking of the solder bump, underfill solved the problem.

Bubbles on solder joint(after conformal coating curing)

Electronics Forum | Tue Nov 24 05:23:18 EST 2009 | prodivegsr

Hi Davef, Thanks...Saw 1 of your thread that you posted : Thanks for providing... From davef : There are many possibilities: * Conformal coat is incompatible with surface residue on the board * Conformal coat is incompatible with solder mask on the

Bubbles on solder joint(after conformal coating curing)

Electronics Forum | Wed Nov 25 15:16:04 EST 2009 | sforman1

Why in heavens name are you using a heat or air cure conformal coating. Why aren't you using a 100% solids UV cure system. You would never have an issue like this Sam Forman MicroCoat Technologies

Bubbles on solder joint(after conformal coating curing)

Electronics Forum | Tue Dec 01 09:24:01 EST 2009 | sforman1

40 years. no cost to you. just trying to help Sam

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