The CAP ALUM POLY 470UF 20 16V SMD is a type of capacitor. It features an aluminum-polymer construction and has a capacitance value of 470 microfarads at 16 volts. The component uses the Surface Mount Device (SMD) package style and radial, can configuration. Additionally, it boasts a resistance rating of 21 milliohms and a lifespan of up to 3000 hours when exposed to temperatures reaching as high as 105 degrees Celsius.