The CAP ALUM POLY 270UF 20 4V T/H is a type of radial capacitor with a can design. It has a capacitance value of 270 microfarads and operates at a voltage rating of 4 volts. The component utilizes aluminum as the conductor material, combined with polymer dielectric for enhanced performance. It features a relatively low ESR (Equivalent Series Resistance) of 7 milliohms and is designed to withstand high temperatures up to 105 degrees Celsius, offering an impressive lifespan of 2000 hours.