What is working voltage is capacitor ?
The working voltage of a capacitor is the highest voltage that can be applied across it without undue risk of breaking down the dielectric layer. The working voltage is usually stated on a capacitor’s datasheet and often printed on the capacitor. If not, a minimum necessary working voltage can be inferred by studying the circuit in which the capacitor is used. Be particularly careful in circuits with a varying voltage. For example, AC voltages are typically measured in volts RMS, but their peak voltages are substantially higher, so basing a capacitor’s working voltage on an RMS AC voltage can lead to selection of a capacitor with an inadequate working voltage and premature failure of the capacitor.
