[volt-nuts] PCBs with ceramic substrates

Chuck Harris cfharris at erols.com
Sun Apr 9 12:17:06 EDT 2017

Why exactly do you think ceramic is delicate?

It is used to make knifes, pistols, internal combustion
engines, turbines,  brake linings, clutches,... and even
insert tooling for machining very hard materials.

It isn't your mother's teapot!

Or, are you the proverbial "bull in a china shop" in
everything you do?

-Chuck Harris

cheater00 cheater00 wrote:
> Hi Rob, thanks for your email.
> My take is you want your standards and calibrated equipment to last very
> long due to increasing stability, and that is in direct opposition to
> making them out of fragile materials, even if they don't get thrown around.
> Accidents happen, people trip over, this can't really be helped. I'm no
> metrology expert by any degree, it just seems to me that making it even
> easier to break your $250k box is a bad idea if it can be wholly avoided by
> using a different material that'll meet requirements too.
> You're right that it's not unheard of - ceramics were even used in mobile
> testing equipment eg by tek - but they didn't know better back then, or
> they didn't care because equipment would be phased out before it had chance
> to break.

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