Electronics Forum | Tue Aug 26 16:18:13 EDT 2008 | grics
hey, thanks for the advice. We have replaced all the lines and have had the valves cleaned & rebuilt, so we are hoping that will be sufficient. What does the dewetting of the urethane coating look like???
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 | Thu Oct 01 03:03:29 EDT 2009 | cunningham
what we are getting is open circuits not every BGA is failing we use Humiseal 1A33 and currently there is no masking instruction for around the BGA
Electronics Forum | Sat Aug 07 02:28:20 EDT 2010 | raghu
We have PVA 350 benchtop dispensing equipement with humiseal 1A33 CC material. is there any moisture measurement process in conformal coating material?
Electronics Forum | Mon Jan 28 11:50:23 EST 2013 | johng
Good morning Mark, No issues around the masking at this point. The issue seem to be in open areas as well as between clad runs. We are using Humiseal 1A33 Conformal Coat.
Electronics Forum | Tue Nov 26 18:41:14 EST 2013 | triciawmcgough
Dear Mike, I've forwarded your question to the experts at Nordson ASYMTEK. I believe most of the team are on leave for the holidays, but hopefully we'll have an answer for you next week. Thanks!
Electronics Forum | Thu Dec 05 02:22:29 EST 2013 | mg2013
Hi Tricia, thanks a lot for your help, i will contact Nordson Asymtek immediately! Greetings Michael
Electronics Forum | Wed Feb 25 01:58:48 EST 2015 | bugarin
Sorry , I`ve got the wrong flux code ,we use NC Kester 959T and we intend to use NC277 VOC-free from AIM, Cheers
Electronics Forum | Mon Aug 20 09:49:57 EDT 2018 | dontfeedphils
Not entirely clear on your question. We don't coat any of our hardware (assemblies are coated prior to hardware installation), so if coating needs to be reworked after this, then hardware removal is needed.
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.
