After applying the voltage of 5 min, the leakage current does not exceed the maximum value of the specification. The ***all capacity aluminum electrolytic capacitor can use the 1min test result, the large capacity aluminum electrolytic capacitor will need longer test time, from the characteristic curve can be seen, The current will be infinitely closer to the final leakage current, the current required to supplement the alumina medium. The loss factor (dissipation factor,df) of electrolytic capacitors can be understood as the reactive power of electrolytic capacitors and the active power of equivalent series resistor (esr) under AC current excitation. ***iously, this is the ratio of capacitive reactance to equivalent series resistance (esr). The rc circuit in AC circuit, and this ratio is very much like the tangent function of trigonometric function.