The CAP ALUM POLY 680UF 20 6.3V T/H is a type of capacitor that consists of an aluminum-polymer material with a high capacitance value of 680 µF and a voltage rating of 6.3 V. It has a radial lead configuration and is housed in an 8mm can style package. This capacitor is designed to operate for up to 2000 hours at a temperature of 105°C, making it suitable for use in various electronic applications where high reliability is required.