"Paul F Austin" wrote in message
...

"Harry Andreas" wrote
"Tarver Engineering" wrote:


Been there, done that, doing it presently, with COTS and high
reliability.
BTW, the current system I'm working has a reliability number higher
than the airframe life.

I doubt we could build AESA and associated
systems_without_commercial-heritage parts. The USG just doesn't have that
kind of money. My company builds fiber-optic and other high speed serial
networks for avionics and space and there is no way to build them without
commercial heritage Serializer-Deserializers and switch chips as an
example.
The die are repackaged and screened to meet military quality requirements
but we live with the temperature limits. The reality of the relative size
of
the commercial semiconductor industry and the military electronics
business-guarantees-that most die used in military systems will be built
on
fab lines whose primary business is the commercial market.

Mil-spec 883 does it all these days.