The difference between Loss Factor and ESR(equivalent series resistance) of capacitor?

Question

Loss factor is the total losses in capacitor, including the dielectric loss and conductor loss. ESR (equivalent series resistance) is also the total losses of capacitor. What's the difference between Loss Factor and ESR of capacitor?

Answer 1

This from http://en.wikipedia.org/wiki/Dissipation_factor

"In capacitors, dissipation factor (DF) is the ratio of a capacitor's resistance (R) to its capacitive reactance (Xc). DF is usually expressed as a percentage."

The capacitor's resistance R as computed from the DF is the ESR, as it includes losses other that those due to the conductivity of the dielctric.