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Supercapacitor Leakage Current and Self Discharge Characteristics

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A supercapacitor is widely used for RTC backup application to provide power to RTC circuit in electronics when the power source to the system is disconnected. Self-discharge characteristics are one of the important characteristics to determine the backup time. Self-discharge current is often confused with leakage current characteristic. In this application note, the difference between leakage current and self-discharge characteristic is explained and importance of self-discharge characteristic in the backup application is explained.

Supercap_Leakage_Selfdischarge-Q3FY18

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