The CAP CER 22PF 4KV C0G/NP0 1808 is a type of ceramic capacitor. It has a capacitance value of 22 pF and is rated for ±5% tolerance. This component has a high voltage rating of 4000V (4kV) and is classified as C0G, also known as NP0 (1B). The size designation is 1808, which is equivalent to 4520 metric.