The CAP ALUM POLY 150UF 20 2V SMD capacitor is a type of aluminum-polymer electrolytic capacitor. It has a capacitance value of 150 microfarads, an operating voltage rating of 2 volts, and a compact surface-mount design (SMD). This component is specified for use in applications requiring high reliability and long lifespan, with a minimum operating life of 2000 hours at 105 degrees Celsius.