Aluminum-Polymer Capacitor Details A capacitor with the part number CAP ALUM POLY 82UF 20 25V T/H is described. It has an aluminum-polymer construction and is rated for 82 microfarads at 25 volts. The capacitor features a radial, can design with a resistance of 28 milliohms. It has a lifespan of up to 5000 hours when operated at temperatures as high as 105 degrees Celsius.