The CAP ALUM POLY 390UF 20 16V SMD is a type of capacitor that utilizes an aluminum-polymer construction. It has a radial, can design and is specifically suited for surface mount devices (SMD). This component has a capacitance value of 390 microfarads at a voltage rating of 16 volts. The product's specifications include a resistance measurement of 26 milliohms and it is capable of withstanding temperatures up to 125 degrees Celsius for a duration of 3000 hours.