Electronics Forum | Thu Jun 16 18:11:30 EDT 2011 | kvanzill
Has anyone done any testing with UV tracer in Parylene processing? Does it cause adhesion problems? Does anyone have any data they can share on this.
Electronics Forum | Thu Jul 07 11:35:16 EDT 2011 | blnorman
I had read somewhere that parylene absorbs UV radiation, and therefore offers very low UV protection. So, yeah probably not a good idea. Plus since it's vapor deposited, unless there is no access to a surface, all surfaces are covered.
Electronics Forum | Mon Jul 11 10:55:48 EDT 2011 | diamondmt
Lou, Oh really? Why's that?
Electronics Forum | Wed Jul 06 15:56:22 EDT 2011 | duso02
We do parylene coating and really frown upon using a UV additive. Technically, it's a contaminant to the parylene.
Electronics Forum | Mon Apr 04 08:45:42 EDT 2005 | jimih280
how does polyurethane used for wood floor coating differ from urethane conformal coatings sold for circuit boards? where can i get uv tracer to put in oil based urethane?
Electronics Forum | Mon Sep 19 09:46:32 EDT 2011 | blnorman
Hopefully the coating does contain a UV tracer. We used a silicone years ago that did not, but UV did make it fluoresce to a degree, you just couldn't ensure 100% coverage. One time we did have a problem with the coating getting on connector pins,
Electronics Forum | Tue Feb 03 15:14:58 EST 2015 | stevezeva
This is a late reply, but from my experience a really good removal station is one made by a company called CCRCo. They make a micro-abrasive station that addresses all the ESD concerns. They utilize a reusable media that is really cost effective. The
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 | Thu Jul 20 05:04:30 EDT 2006 | bing007
We had a similar problem with gold contact pads. Cleanliness is paramount. If you are using foil tensioning system, wash the foil in a stencil wash before use as the cardboard cassettes may be contaminated. Be very careful when loading into a frame f
Electronics Forum | Fri Feb 08 06:26:03 EST 2008 | jdumont
Hey that was me way back! Anyways, use Dow 3140 (self leveling) or Dow 3145 (peanut butter consistency) and call it a day. No out gassing/acidic properties. 3140 also contains a UV tracer for black light inspection. Any tall caps should be epoxied if
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