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5.3 Calculation of useful life
The tables in the individual data sheets list the rated ripple current IAC,R for the upper category
temperature (+85 °C, +105 °C or +125 °C) and for a frequency of 100 Hz. The useful life for
known ripple current loads and ambient temperatures is determined on the basis of the useful life
graphs as follows:
найдите документ "Aluminum Electrolytic Capacitors General technical information" там много интересного и даже про ожлаждение.