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Thread: What is Silicone Conformal Coating?
face BY : David VanHorn email (remove spam text)

At 06:18 PM 4/20/01 -0400, John Waters wrote:
>Hi All,
>I saw in the electronic component store a kind of chemical called "Silicone
>Conformal Coating", is it used for providing a layer of protective coating
>covering up the PCB? If so, will high frequency signal(say, up to 12
>MHz)leak through this kind of coating?

Radiated RF will fly right through it at any frequency. It's transparent to RF.

Dave's Engineering Page: http://www.dvanhorn.org
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