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| From [log in to unmask] Wed May 15 19: |
52:24 1996 |
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Well, for my two cents, the only testing for moisture I'm
involved with is Bellcore GR-63 High/Lo Humidity, High/Lo
Temp Tests. But, this involves a functional assembly and
has to do with Telecommunications equipment.
Because we do this humidity testing, I have asked around
about humidity testing results of ANY kind for bare pc
boards. I have not received an answer from anyone.
At a former company where I worked, we used a nylon drive
shaft in a piece of equipment. Everything was fine until we
sold to people in Florida.
Massive failures.
Reason: The nylon absorbed water like a sponge in the high
humidity of Florida.
Solution: Bake the shafts before assembly.
I have never forgotten this lesson, but have yet to see any
kind of humidity testing for pcbs.
Moisture "pick-up" I guess you'd call it.
Doug McKean
[log in to unmask]
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