Hi all,

Can anyone tell me exactly what the temperature rating for aluminum
electrolytic caps means? When the datasheet says 105 deg C max, which
of the following (if any) does this mean:

a) the capacitor will operate within specs (including max ripple
current) when the ambient temp is 105 deg C (so the case could
actually be 20 to 30 deg C hotter)

b) the capacitor will operate within specs when the case is 105 deg C
(so the ambient may need to be 20 to 30 deg C cooler if running at max
ripple current)

c) the capacitor will operate within specs when the maximum internal
temperature (hot spot) is 105 deg C (very difficult to determine
without more data from the manufacturer)

Thanks,

Sean
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