In case of a common mode choke,
I have seen in two different component manufacturers these two terms:
- rated voltage
- withstand voltage
Are they the same? How are they related?
The withstand voltage is explained in the specification sheet for your part:
The withstand voltage is the maximum voltage where the manufacturer guarantees less than 1 mA leakage current and no damage to the part if it is applied for up to 5 s.
The "rated voltage" is 40% of the withstand voltage. Probably they intend the rated voltage to be the maximum nominal operating voltage for the part.
Rated Voltage is the maximum recommended voltage at which you should operate. Operating at voltage above rated voltage will not yield desired results (not necessarily destroy the device).
Withstand voltage is like Point of no return, after which the device will be permanently damaged.