Re: PCBs in UHV

On Wed, 29 Apr 2009 14:23:38 -0700, Robert Baer wrote:
Rene Tschaggelar wrote:
Robert Baer wrote:
Martin Brown wrote:

And recommendations on materials/fabricators/whatever?

When I was in that game I think they used PEEK for the internal
plastic supports and copper pins. Not exactly mass production stuff.
They put the least electronics they could into exposed hard vacuum
because of the difficulties.

And not all PEEKs were created equal so they had to test every batch.

Yes, PEEK is god, but wouldn't glass be better?

Glass is somewhat limited in how it can be machined ...
But it can, if absolutely required, be moulded int complex shapes.
And wires can be integrated for power and signal connections as long
as one chooses metals and glasses that have rather similar expansion vs
temp coefficents.

If you find a decent glass blower, some of their results can be
indistinguishable from magic. ;-)

Cheers!
Rich

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