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 | Wed Aug 27 17:12:34 EDT 2008 | mikesewell
Silicone contamination could appear as fisheyes or dark spots under UV light. 1A33 can be heat cured but is a single component oxygen cure coating - it needs a source of oxygen to cure. An unvented oven may slow or limit the cure. Check out the TDS
Electronics Forum | Thu Oct 01 07:03:55 EDT 2009 | davef
We doubt that Humiseal 1A33 is causing opens in your assemblies. We'd guess the opens occur earlier in the process, but are not hard failures. So, you pass your tests. When applied, the conformal coat flows into the gap in the ball crack and insulate
Electronics Forum | Tue Jul 05 15:26:10 EDT 2005 | jimih280
Where is the best place to buy Humiseal 1A33 in gallons?
Electronics Forum | Wed Aug 27 07:48:11 EDT 2008 | patrickbruneel
Contact Graham Naisbitt he is an expert in this field. Graham.Naisbitt@concoat.co.uk
Electronics Forum | Wed Aug 27 15:51:45 EDT 2008 | grics
Thanks Patrick. I will probably contact him tommorrow.
Electronics Forum | Wed Dec 04 14:19:30 EST 2013 | triciawmcgough
Nordson ASYMTEK engineers are familiar with the regular 1A33 but the gel is a relatively new product. Its purpose is to prevent the exact problem you are describing. Can you provide us a phone number so we can discuss in person? You can send the phon
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.
