The CAP ALUM POLY 3300UF 20 4V SMD is a type of capacitor featuring aluminum-polymer construction. It has a radial, can design and is surface-mountable (SMD). This component boasts an impressive capacitance value of 3300 microfarads at 4 volts. The specified parameters also include a low ESR (Equivalent Series Resistance) rating of 11 milliohms and a long lifespan of up to 2000 hours when operating at 105 degrees Celsius.