On 11 May 98 at 13:24, Ken Patel wrote:

> We are seeing more and more Crystal/Oscillators failures and it's
> failure analysis report done by manufacturer blames to handling. My
> questions are ...

> (1) Does any one has similar crystal failure attributed to improper
> dropped shipment during transit/ mishandling on floor and how the
> problem was over come?

Please describe the failures: Won't work, frequencies shifted... ?

> (2) Is there any reliability study done to evaluate g-force impact
> on the crystal? Are those kind of data available from crystal
> suppliers? (well, I am going to ask them but before that)

Consider possible damage by ultrasonic cleaning. The crystal
suppliers should be able to specify allowed cleaning procedures.

Regards
Matthias Mansfeld
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Matthias Mansfeld Elektronik
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Am Langhoelzl 11, D-85540 Haar
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Tel.: 089/4620 0937, Fax: 089/4620 0938
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Internet: http://home.t-online.de/home/matthias.mansfeld

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