The CAP ALUM POLY 820UF capacitor is a type of radial, can aluminum-polymer capacitor with a capacitance of 820 microfarads and a voltage rating of 6.3 volts. It features a high temperature coefficient and has a leakage resistance of approximately 9 milliohms. This component meets the requirements for long-term stability, withstanding temperatures up to 105 degrees Celsius for at least 2000 hours.