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Can anyone some sample calculation on how to calculate the lifetime on an Aluminum Electrolytic capacitor who's Endurance value (Assumed as Lifetime value is 2000 hours at 105degC).

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The manufacturer also gives a formula like below,

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My working :

The below table is how much I am going to operate the capacitor at each temperature. And I am planning to use the capacitor for a lifetime of 10years which approximately comes to 87660 hours (considering leap year).

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Can someone tell me the logic behind the below calculation.

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Why is the last column values multiplied with 2000 (2000 h cap lifetime value)?

  • Where did the table come from? Did you create it? If so, why did you choose to make those calculations? If not, what was the source? – Elliot Alderson Apr 02 '21 at 11:42
  • Similar question and answer – Andy aka Apr 02 '21 at 12:15
  • @ElliotAlderson, I did not make those calculations. I found them from a file which was already done by some unknown person. Do you know how those calculations are made? –  Apr 02 '21 at 13:34
  • @Andyaka, thank you for the link. Do you have some idea on the above calculation images posted in the question? –  Apr 02 '21 at 13:34
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    I don't recognize the calculation images and have no idea where they came from. The answer I linked should be clear in that respect as it uses the same formulas. – Andy aka Apr 02 '21 at 13:54

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