The CAP ALUM POLY 680UF 20 35V T/H is a type of aluminum-polymer capacitor. It has radial leads and a can-shaped design. The capacitor offers 680 microfarads (µF) of capacitance at a voltage rating of 35 volts. Additionally, it features a resistance of 28 milliohms and a lifespan of up to 2000 hours when operated at 105°C.