The CAP ALUM POLY 100UF 20 16V SMD is a type of capacitor. It features an aluminum-polymer construction and has a radial can design suitable for surface-mount devices (SMD). The capacitor's specifications include a capacitance value of 100 microfarads, a voltage rating of 16 volts, and an operating temperature range of up to 105 degrees Celsius with a lifespan of 10,000 hours.