[volt-nuts] PCBs with ceramic substrates

Rob Klein rob.klein at smalldesign.nl
Fri Apr 7 15:30:56 EDT 2017

In general, metrology equipment doesn't get thrown about much ...

I know some calibrators have (heated) modules on ceramic substrates, so it's not that it is completely unheard of.

⁣Met vriendelijke groet,
Rob Klein

verstuurd vanaf mijn smartphone​

Op 7 apr. 2017 20:12, om 20:12, cheater00 cheater00 <cheater00 at gmail.com> schreef:
>Hi Attilla,
>My #1 worry would be fragility.
>On Thu, 6 Apr 2017 06:39 Attila Kinali, <attila at kinali.ch> wrote:
>> 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
>> They don't alters their views to fit the facts, they alter the facts
>> fit the views, which can be uncomfortable if you happen to be one of
>> facts that needs altering.  -- The Doctor
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