The CAP ALUM POLY 18UF 20 63V SMD is a type of capacitor. It features an aluminum-polymer design with a radial, can-style package. This component is specifically designed for surface mount (SMD) applications and has a capacitance value of 18 microfarads at a working voltage of 63 volts. The CAP ALUM POLY 18UF 20 63V SMD also meets standards for reliability, with a specified lifespan of 1000 hours at an operating temperature of 125 degrees Celsius.