The CAP CER 820PF 1.2KV X7R 2220 is a type of ceramic capacitor with specific characteristics. It has a capacitance value of 820 picofarads, operates at voltages up to 1200 volts, and is classified as an X7R dielectric material. This component is also known by its metric part number, 5750, and is available in the 2220 package size.