The CAP ALUM POLY 270UF 20 4V SMD capacitor is a type of radial, can-style component featuring aluminum-polymer construction. It has a capacitance value of 270 microfarads and operates at 4 volts. This Surface Mount Device (SMD) component boasts low resistance at 22 milliohms and a high lifespan of 5,000 hours when exposed to temperatures up to 105 degrees Celsius.