The CAP ALUM POLY 2700 UF 20 4V SMD is a type of aluminum-polymer capacitor. It has a capacitance value of 2700 microfarads and an operating voltage of 4 volts. This capacitor is suitable for surface mount technology (SMD) applications, with a radial lead configuration and a can-style package. The device features a low equivalent series resistance (ESR) of 11 milliohms and a long lifespan of up to 2000 hours at an elevated temperature of 105 degrees Celsius.