The CAP ALUM POLY 820UF 20 2.5V T/H capacitor is a type of aluminum-polymer capacitor with radial and can design. It has an 820 microfarad capacitance, operates at 2.5 volts, and features a temperature/humidity rating. The component's construction utilizes a combination of aluminum and polymer materials for its electrode and dielectric respectively. Its resistance value is specified as 7 milliohms, while it can withstand temperatures up to 105 degrees Celsius over an extended period of approximately 2000 hours.