Electrolytic Capacitor life time

[priyasuntharam]

How to calculate the life time of an electrolytic capacitor?

 

[tpetar]

Life Calculators
http://www.illinoiscapacitor.com/tech-center/life-calculators.aspx

The ambient temperature has the largest effect on life. The relationship between life and temperature follows a chemical reaction formula called Arrhenius' Law of Chemical Activity. The law put simply says that life of a capacitor doubles for every 10 degree Celsius decrease in temperature.

Voltage derating also increases the life of a capacitor but to a far lesser extent, as compared to temperature deratings. Internal heating caused by the applied ripple current, reduces the projected life of an aluminum electrolytic capacitor.



Electrolytic Capacitor Lifetime Estimation
http://jianghai-america.com/uploads/technology/JIANGHAI_Elcap_Lifetime_-_Estimation_AAL.pdf

Life Design
**broken link removed**



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