> I remember something about tantalum caps needing to be used at a goodly
> fraction of their rated voltage.  I.E. on a 5V bus a 25V cap would fail
> sooner than a 10V cap.
>
> Does anyone else remember that?

This is generally true for wet electrolytic aluminium caps which like to be
run near (but below) their rated voltage.
Tantalums (see NEC pdf I mentioned) are much better run at 1/3 to 1/2 their
rated voltage.


        Russell McMahon

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