About surge voltage ratings for aluminum electrolytic capacitors
For aluminum electrolytic capacitors, we define the surge voltage based on JIS C5101-1.
This surge voltage is rated based on overvoltage applied in emergency situations and does not assume the application of overvoltage under normal use.
Surge voltage performance test conditions are as indicated below.
| Test temperature | 15～35℃ |
|---|---|
| No. of cycles (1 cycle of charge and discharge ) |
1,000 times |
| Charge | 30sec |
| Open | 5m30s |
| Protective resistor | as required for RC=0.1±0.05sec |
Typically, we rate the surge voltage as 1.1 to 1.15 times the rated voltage, but this may vary depending on the rated voltage and product series.
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