Hi Everyone, 

I have a few questions about conformal coating. Specifically acrylics. For
reference, we apply the coating manually.

What are the average coating thicknesses that you see after 1 coat? After 2
coats? Are you getting more than 0.001" of coverage in 1 or 2 coats?

Given that soldermask is very lossy when it comes to SI, I would assume the
coating has similar properties (still waiting for vendor data). Have you had
any odd failures (from an RF stand point) with a 0.001" coating thickness
versus say 0.002" or 0.003"?

The data sheet specs a Dk and Df @ 1 MHz, but I am extremely interested in
these at RF frequencies.

Has anyone done any studies about this that can share the findings?

Thanks,
Craig

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