Capacitor, CAP ALUM POLY 47UF 20 4V SMD, is a type of aluminum-polymer capacitor with a capacitance value of 47 microfarads and a voltage rating of 4 volts. It has a surface mount design (SMD) and comes in the metric size 2917 or 7343. This component can withstand temperatures up to 105°C for an operational lifespan of 1000 hours.