This is a capacitor with the following specifications: CAP ALUM POLY 100UF 20 6.3V SMD; it has a capacitance of 100 microfarads, a voltage rating of 6.3 volts, and is an aluminum-polymer type; it is in radial, can form and is surface mountable (SMD); its ESR is 25 milliohms, and it can withstand temperatures up to 105 degrees Celsius for 2000 hours.