We used them in the supercomputer space long long ago. Mount 8 die to ceramic substrate, mount those to Rogers boards. Thermal wasn't really an issue as everything was bathed in Flourinert™.
Was an interesting project. The Unix kernel scheduler had to make scheduling decisions based on all the usual criteria plus how far away the free CPU and/or memory was. Bob On Fri, Apr 7, 2017 at 2:12 PM, cheater00 cheater00 <cheate...@gmail.com> wrote: > Hi Attilla, > My #1 worry would be fragility. > > On Thu, 6 Apr 2017 06:39 Attila Kinali, <att...@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 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 > > _______________________________________________ > > volt-nuts mailing list -- volt-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
