Chris Palin is currently managing European sales and support for HumiSeal Conformal Coatings. His expertise is in test & reliability, solder technology, power die attach and conformal coating.
Chris Palin has submitted responses to the following questions.
Conformal Coating Recommendation
The basic material type required would be an acrylic conformal coating designed for LED applications such as HumiSeal 1B73LED. You ...
Cleanliness After Coating Removal
There are different ways to remove polyurethane coatings as you know.Use of specific stripping chemicals.Dry powder micro abrasion.The chemical method ...
Conformal Coating Over Heat Sinks
Regarding coating of heat sinks with conformal coating.Here is a calculation based on the thermal conductivity of acrylic resin being ...
HASL vs. Immersion Gold
If electronics are being used in a corrosive chemical environment it would be advised to use a polyurethane conformal coating ...
Uneven Conformal Coating
I am surprised that this is happening only on the matte finnish boards!
If the issue were related to surface ...
Organic Flux Residue Concerns
There are many variables here so a definitive answer is not possible.
You should first consider the following points:Is the ...
Affects of Silicone Migration
Silicone conformal coatings have been linked to relay failures due to contamination over time.
Silicones also have a tendency to ...