The CAP CER 270PF 4KV C0G/NP0 2220 is a type of ceramic capacitor. It has a capacitance value of 270 pF and an operating voltage rating of 4000V, or 4kV. The capacitor is classified as C0G or NP0, which falls under the 1B temperature coefficient category, and it comes in the 2220 package size, also known as the 5750 metric size.