Film Capacitors

Film Capacitors are not polarized, so they can be used for AC signal as well as power usages. Film Capacitors are designed with extremely high accuracy capacitance values to maintain the capacitance values longer than other types of capacitors. 

There are many different types of film capacitors including metalized film, polyester film, PTFE film, polystyrene film, and polypropylene film. The main difference between these types of capacitors is the dielectric material that is used.