Tech-Netters:
        A vendor recently received back from us a batch of multilayer
ceramic chip capacitors that failed their dissipation factor specification.
They claimed that the parts were merely aged and put them through a
"de-aging" process, apparently a vacuum bakeout.  The parts now meet the
spec!  Does anyone have any idea what the process is and what it does?  How
long will the parts remain "de-aged?"  What about parts already installed;
does D increase with age on all parts?  Do you have any citations in the
literature?  Can the de-aging process work on humans?
        Thanks for your help,
        Howard Feldmesser
        The Johns Hopkins University Applied Physics Laboratory


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