The CAP ALUM POLY 680UF 20 6.3V T/H capacitor is a type of radial, can-mounted aluminum-polymer capacitor with a capacitance value of 680 microfarads and a voltage rating of 6.3 volts. It has a low ESR (Equivalent Series Resistance) of 10 milliohms and an operating temperature range of up to 105°C, with a lifespan of 2000 hours under these conditions.