How long does an electrolytic capacitor last?

For small electrolytic capacitors, the lifetime is governed mainly by the temperature (consumption of the electrolyte) so the voltage factor KV is estimated at 1 . For every 10 °C increase in operating temperature, the life of the electrolytic capacitor reduces by half , .

How to predict the life of an electrolytic capacitor?

It is a new method which predicts the life of an electrolytic capacitor by estimating the ESR and the ripple current flowing through the capacitor using temperature and current as a constraint. A life model employing core temperature estimation derived from ESR deterioration and operating conditions is shown.

How does temperature affect the life of an electrolytic capacitor?

For every 10 °C increase in operating temperature, the life of the electrolytic capacitor reduces by half , . But, there is a temperature range where the theory of lifetime is not applicable. Indeed, for a temperature higher than 100 °C, the temperature acceleration factor is different.

Do electrolytic capacitors need maintenance?

There are many studies on the failure modes of electrolytic capacitors, and mainly aluminum electrolytic capacitors. Indeed, from the understanding of the mechanisms and failure modes of a capacitor, it is possible to apply a maintenance in order to know the remaining lifetime of the component.

What is a useful life of an aluminum electrolytic capacitor?

For aluminum electrolytic capacitors, since they were decrease in the capacitance. When any of these values changes are defined as “fell into the wear-out failure”. The served term called a useful life. III.

Does a 772 temperature increase the life of an electrolytic capacitor?

For every 10 °C increase in operating 772 temperature, the life of the electrolytic capacitor reduces by half , . But, there is a 773 temperature range where the theory of lifetime is not applicable. Indeed, for a temperature higher 774 than 100 °C, the temperature acceleration factor is different.