[SI-LIST] Re: Low-leakage PCB materials
- From: Rick Collins <gnuarm.2006@xxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Tue, 20 Dec 2011 13:23:00 -0500
I suppose it has its own cost and other issues, but isn't conformal
coating typically used for high voltage work? That should also deal
with the moisture adsorption problem. Just don't try to rework the
boards, I understand that can be a real PITA.
Rick
At 04:39 AM 12/20/2011, Wolfgang.Maichen@xxxxxxxxxxxx wrote:
>Not perfectly SI-related but I figured there are enough PCB
>manufacturing experts around on this list to warrant a question:
>
>What are good materials for low-leakage, high-voltage (2-10kV)
>applications? The standard solution here has been to use Rogers
>material (not for SI - the application is very slow speed, a few MHz
>at best - but purely for leakage reasons), but of course this is an
>expensive approach. Can anybody recommend a less pricey material
>that nevertheless offers very low leakage and doesn't have issues
>with moisture absorption (like FR-4 has)? The boards are multi-layer
>(typically 6-10 layers).
>
>Thanks in advance,
>
>Wolfgang
>
>
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