Electronics Forum | Mon Oct 03 21:02:23 EDT 2016 | rwd
I am doing some rework to my CCA. I then need to conformal coat the board. I'm using Humiseal 1A33 GEL and my jumper wires are teflon coated. I understand the chemical interaction between the 2 products. My question is "Is this an acceptable prac
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
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 | Mon Nov 25 03:14:57 EST 2013 | mg2013
Hello @ the specialists, we have a Nordson Asymtek SL940 to coat our pcb's. We can use the valves SC100 and SC400 for conformal coating applications. We use the Humiseal 1A33 as the conformal coating. Now we would like to use the standard 1A33 in th
Electronics Forum | Tue Feb 24 06:44:50 EST 2015 | bugarin
Hello , We are using Kester 959T flux and we wish to purchase Aim Ws 716 flux, due to higher activity. We also use humiseal 1a33 for conformal coating. Is anyone using Aim flux and humiseal 1A33, are they compatible ? Thank you for info
Electronics Forum | Mon Nov 06 10:51:23 EST 2006 | SteveH
We have 2 PVA2400 4 axis selective spray machines that we use to spray Humiseal 1B31 and 1A33. They take a bit of programming to get right, though this is easy to do, but do the job OK. Another to consider if you need the 4 axis of movement would b
Electronics Forum | Fri Sep 02 16:30:02 EDT 2011 | duso02
Rich That is a standard reaction with Humiseal 1A33, nothing to worry about. Find a board that was coated over year ago and had been heated up at all and it will be an amber color. It does not violate the IPC for discoloration. We have coated boards
Electronics Forum | Tue Feb 03 13:47:59 EST 2009 | grics
I would also suggest looking at your ramp rate in the cure oven. We noticed that accelerated heating increased the "gas out" of the solvent. We run 1A33 and and do not exceed a .5/degC ramp rate.
Electronics Forum | Fri Aug 07 16:45:35 EDT 2020 | duso02
All URs require a long time to fully cure. And actually, most users do not reach full-cure before using the board. Even Humiseal 1A33 will be dry enough to handle after a very short time.
Electronics Forum | Wed Aug 27 08:06:43 EDT 2008 | davef
Thick, hard conformal coatings of acrylic, urethane and epoxy have a well documented history of causing solder joint cracks and breaking glass/ceramic and other brittle components. Dissimilar expansion and fairly high surface bond strengths of the ma
