Electronics Forum | Fri Feb 18 15:27:38 EST 2005 | jluckenbaugh
Frank R, I believe the Dymax #984-LVUF is a POLYURETHANE RESIN. I have used Humiseal 1A27 and 1A33 for several years with great success. Both of these materials are High VOC materials. If your customer does not require these materials to be aproved
Electronics Forum | Mon Aug 29 16:21:20 EDT 2011 | rjlasko
Greetings...I have a customer that has an assembly that is conformal coated with Humiseal 1A33. This assembly has some components (resistors and FET's) that heated up during operation and has discolored the conformal coating around their location.
Electronics Forum | Sat Aug 18 10:35:41 EDT 2018 | mgerrior
Hey Phil, i'm just curious what your rework processes are for your hardware after conformal coating is applied (if any). I'm interested in conformal coating as our hardware can be exposed to moisture rich environments at customer sites but to my kno
Electronics Forum | Mon Aug 25 14:55:51 EDT 2008 | grics
I have a question for the manufacturing masters... We are going to start running test trials/DOE of a Urethane Coating (Humiseal 1A33) and I am not sure what to expect. From what I understand, urethane coating is pretty difficult to work. It is supp
Electronics Forum | Mon Aug 29 22:48:09 EDT 2011 | davef
Rich Here's what Humiseal says: Thermal Properties The coating must be able to withstand localized thermal 'hot spots' generated by components. High temperatures can cause short-term changes in coating characteristics, such as softening and lowered e
Electronics Forum | Wed Jul 29 21:16:17 EDT 2020 | SMTA-64387706
Hi, I have a PCB that works fine when tested before conformal coating with HumiSeal 1B73. It seems like the CC is causing electrical issues. We brush it on, so it is a bit thick. After curing we are getting QFNs that do not seem to connect well and a
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
Electronics Forum | Wed Jan 31 10:56:23 EST 2018 | dontfeedphils
I'm working on bringing up a new conformal coat process/workcenter and have a few questions I'm hoping someone might have experience with. Right now we're manually spraying both coating materials (1B31 and 1A33 from Humiseal) using HVLP guns. I run
Electronics Forum | Tue Aug 14 16:18:48 EDT 2018 | dontfeedphils
A couple of things to try as I just went through this myself. Checkout this link for pointers on plasma cleaning... http://www.nordson.com/~/media/Files/Nordson/march/Papers/The-Effects-of-Plasma-Treatment-Prior-to-Conformal-Coating-NordsonMARCH.p
Electronics Forum | Wed Mar 04 08:32:45 EST 2020 | stephendo
We bought a conformal coating removal machine AKA a sand blaster at an auction. It is a CCR2000 especially made to be ESD safe. Does anyone have any experience with sandblasting conformal coating? We mostly use humiseal 1A33 and UV40. When we use the
