[time-nuts] Aging rate of crystals

Pete peterawson at earthlink.net
Mon Feb 18 10:26:54 EST 2008


After spending lots of time trying to make passive
'scope probes immune to moisture intrusion, I can
say that any hole in an OXCO can will result in moisture
effects showing up; it's just a matter of time.

While there are PCB coating materials aplenty, they
only serve to delay the inevitable. I think the same is
true of taping over holes in a can; for a time, it helps,
but not for long.

Fully sealed assemblies are hard to find, but it's the
only way to get the job done.

Pete Rawson



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