[time-nuts] Helium and MEMS oscillators don;t mix well
hmurray at megapathdsl.net
Thu Nov 1 14:40:16 EDT 2018
kb8tq at n1k.org said:
> Helium leak testing is a *very* common thing in the oscillator industry. Iâd
> bet it also is done in the MEMS oscillator business as well.
How does that test work?
It seems obvious how to test stuff that is designed to hold Helium - put the
Helium in and sniff the surrounding air to see if any leaks out. But how do I
test a small package to see if any leaks in?
Maybe give it a chance to leak in for a while and then see if any leaks out?
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