The CAP ALUM POLY 33UF 20 63V SMD capacitor is a type of radial, can-style surface mount device (SMD) with specific electrical characteristics. It features an aluminum-polymer construction and offers high capacitance values of 33 microfarads at 63 volts. This component is designed for use in various applications, including those requiring stability over extended periods, such as 2000 hours at 105 degrees Celsius, where the maximum resistance is approximately 27 milliohms.