Performance characteristics of high reliability double layercapacitor components

摘要

Performance characteristics are presented for double-layercapacitors specified by DESC drawing 92001 and manufactured by the EvansCompany. Evaluated capacitors passed all specified environmental andphysical tests. A cycle-life test of 400000 charge discharge cycles wascompleted. The largest capacitance change was 29%. It occurred at themaximum rated temperature. Insignificant changes were observed in theequivalent series resistance (ESR). An aging study conducted using afive-level, two-factor experimental design showed the effects oftemperature, voltage, and time on capacitor properties. After 12000 testhours, the largest capacitance change was a 30% decrease. It occurred at40% of the rated voltage. ESR was stable throughout the investigatedparameter space. No failures were observed during more than 500000part-hours of testing