The part number CAP CER 22PF 1KV C0G/NP0 1812 corresponds to a specific type of ceramic capacitor. It has a capacitance value of 22 pF and operates within a voltage range of 1000V (1kV). The C0G/NP0 designation indicates that it belongs to the C0G (NP0) class of ceramics, which is known for its stability in temperature characteristics. This capacitor is available in an 1812 (or metric 4532) case size.