The CAP ALUM POLY 820UF 20 2.5V SMD capacitor is a type of aluminum-polymer electrolytic capacitor with a radial, can design and surface mount technology (SMT) packaging. It has an exceptionally high capacitance value of 820 microfarads (µF), operates at a voltage rating of 2.5 volts, and boasts a resistance value of 9 milliohms. This component is specifically designed to maintain its specifications even after prolonged exposure to temperatures up to 105°C for a duration of 2000 hours.