What is the standard for detecting the withstand voltage and leakage current of electrolytic capacitors?

the withstand voltage of the capacitor indicates the voltage that the capacitor can withstand under certain conditions. If the working voltage applied to the capacitor exceeds the rated voltage, the insulating medium inside the capacitor may be broken down, resulting in short circuit or serious leakage between the pole pieces. Therefore, the working voltage of the capacitor cannot be greater than its rated withstand voltage to ensure the reliable operation of the circuit.

For electrolytic capacitors, leakage current is an important performance index. The leakage current of electrolytic capacitor is closely related to voltage, and the leakage current increases with the increase of working voltage. When the working voltage is close to the energizing voltage of the anode, the leakage current will rise sharply. By testing the leakage current of electrolytic capacitor, its ultimate withstand voltage and rated withstand voltage can be calculated, which has direct reference significance for the value of capacitor withstand voltage in the circuit.

Kaya HIOKI)ST552 can be tested from small current to large current, and its measuring range is very wide, which can meet most testing requirements. For withstand voltage test, you can also consider the 3153 series of instruments, and you can export data for relevant analysis.

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