Electronic – Substitute capacitor voltage


I have a circuit that is calling for a 400v capacitor to be used. I only have 1000v available. Can I susbtitute it and use the 1000v?

Best Answer

The volt rating on a capacitor tells you at what voltage a capacitor breaks down. When it breaks down the capacitor will burn through its dielectric causing a short. There is nothing wrong with using a capacitor with a higher volt tolerance, just make sure the capacitor has the same capacitance and that both are polar or non-polar capacitors.