The CAP ALUM POLY 270UF 20 2V SMD is a type of capacitor with a 270 microfarad capacitance and a voltage rating of 2 volts. It features an aluminum-polymer construction and comes in a 2917 (7343 metric) package size, with an ESR of 7 milliohms and a lifespan of 1000 hours at 105 degrees Celsius.