The CAP ALUM POLY 1800UF 20 16V T/H is a type of aluminum-polymer capacitor. It has a radial lead configuration and a can-style housing. This capacitor features an extremely high capacitance value of 1800 microfarads (µF) and a voltage rating of 16 volts. Its low equivalent series resistance (ESR) is 8 milliohms, making it suitable for applications where high current pulses are present. The device also boasts a long lifespan of up to 2000 hours at an operating temperature of 105°C.