[volt-nuts] PCBs with ceramic substrates

acbern at gmx.de acbern at gmx.de
Thu Apr 6 04:13:41 EDT 2017

well, certain Rogers materials have an even higher surface resistance than PTFE, and are the preferred choice in that case.

> Gesendet: Donnerstag, 06. April 2017 um 06:38 Uhr
> Von: "Attila Kinali" <attila at kinali.ch>
> An: volt-nuts at febo.com
> Betreff: [volt-nuts] PCBs with ceramic substrates
> Moin,
> I recently wondered, why people around voltage metrology hardly
> talk about ceramic substrates (Al2O3, AlN, ...) for PCBs.
> They have surface resistivity that is as high as PTFE, have
> higher thermal conductivity, lower thermal expansion (AlN is
> even pretty close to Si). So, why then does it hardly ever get
> mentioned? Is it the cost of those? Or is there something I am
> missing?
> 			Attila Kinali
> -- 
> You know, the very powerful and the very stupid have one thing in common.
> They don't alters their views to fit the facts, they alter the facts to
> fit the views, which can be uncomfortable if you happen to be one of the
> facts that needs altering.  -- The Doctor
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