Electronics Forum: acrylic coating (Page 1 of 13)

defect on PCB acrylic conformal coating

Electronics Forum | Wed May 08 14:24:22 EDT 2013 | wahahasteven

we are using acrylic conformal coating on the PCB. Under the same program, same parameters (not changing anything on the machine), and we always found one or two boards have some spots which are not coated (shown as picture). The location of the spot

defect on PCB acrylic conformal coating

Electronics Forum | Wed May 08 20:14:24 EDT 2013 | davef

What happens when you rework those non-coated areas? Please list your rework steps Br, davef

defect on PCB acrylic conformal coating

Electronics Forum | Thu May 09 10:12:08 EDT 2013 | wahahasteven

this is one of my project. I have tried to remove coating only on those areas with alcohol and thinner, then program the machine to coat the removed area again. But the result obviously shows that two different tones of coating on the board. I also

defect on PCB acrylic conformal coating

Electronics Forum | Thu May 09 13:49:24 EDT 2013 | davef

First, it appears that your solder mask and your coating material appear to be incompatible. Second, IPA leaves a residue that's probably not compatible with your coating material, either. IPC-HDBK-830 - Guidelines for Design, Selection and Applic

conformal coating

Electronics Forum | Thu Apr 16 10:13:32 EDT 2015 | charliedci

Anyone aware of an acrylic conformal coating that is UV curable?

Conformal coating

Electronics Forum | Thu Jan 29 16:30:04 EST 2004 | blnorman

What conformal coating are you using - silicone, acrylic, urethane?

Conformal coating

Electronics Forum | Mon Feb 02 06:55:13 EST 2004 | Sam

The Type we predominntely use is Acrylic, but we also get this problem when we use silicone or urethane. Sam.

conformal coating

Electronics Forum | Fri Apr 17 08:52:03 EDT 2015 | charliedci

Thanks for the info Sarason. The UVCL is a Urethane. Did not want that hard of finish (for solder rework issues). We like the Acrylic as acetone will remove cured material for solder rework.

Conformal coating inspection

Electronics Forum | Tue Nov 30 11:08:22 EST 2004 | jdumont

Hey all, we will be starting to coat our PCB's soon. I am looking for info on what type of UV light is needed to inspect the boards. We will be using Humiseal 1B73 Acrylic coating. TIA, JD

Problem with conformal coating

Electronics Forum | Wed Feb 23 10:01:00 EST 2005 | frankracine

Dave, Few questions concerning your Umiseal 1B73. To cure your Acrylic coating do you respect specification ( 2Hrs-170degree F) or you go faster than that? What do you use to cure it? Do you have to clean your nozzles each day or each monday beca

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