The CAP ALUM POLY 470UF 20 16V SMD is a type of capacitor with a capacitance value of 470 microfarads and a voltage rating of 16 volts. It has an aluminum-polymer construction and a radial, can design suitable for surface mount devices (SMD). This component features a resistance of approximately 17 milliohms and is capable of maintaining its performance over a period of 4000 hours at temperatures up to 125 degrees Celsius.