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 | Mon Jul 11 10:55:48 EDT 2011 | diamondmt
Lou, Oh really? Why's that?
Electronics Forum | Wed Feb 19 13:08:23 EST 2020 | john_kim
Thank you again Jer !
Electronics Forum | Mon Feb 10 16:13:56 EST 2020 | john_kim
Hello, Would you please recommend a proven Short circuit tracer/finder ? From time to time, to fix defective boards, I need to find a source of bridge between Power and Ground. I had used a simple Shortsniffe, but it was very hard to trace the origi
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 | 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 | 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 | Tue Feb 18 18:33:57 EST 2020 | jerlong2020
I have used infrared imaging to find electrical shorts on logic boards between the 5 Volt buss and ground. You can power the electrical short up to draw 50 to 100 mA and then look for the warm spot in the infrared display.
Electronics Forum | Wed Feb 19 11:21:18 EST 2020 | john_kim
Thank you for your advice Jer. BTW, may I ask the model name which you have used ? I'd like to buy and try it. Does it work well for the bridge underneath of components ? Regards, John
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
.gif)
winsouce.jpg)