Electronic – Max voltage of capacitor


Is there a max voltage drop across a capacitor?
Or does it always charge up to the same voltage as the supply?
If there is a max voltage, then what would happen if the supply voltage far exceeds the max voltage of the capacitor, would the dielectric material break?

Best Answer

The cap will try to charge to the supply voltage. On its way to that voltage, if the voltage exceeds the voltage rating of the capacitor, the capacitor will eventually fail. At that point it will be permanently damaged. It may have even externally ruptured.