The CAP CER 390PF 2.5KV C0G/NP0 2220 is a type of ceramic capacitor with specific characteristics. It has a capacitance value of 390 pF and a voltage rating of ±2500V (2.5kV). The C0G designation indicates that it belongs to the NP0 class, which is also known as Class 1B in metric notation. This capacitor has a package size of 2220, equivalent to a metric size of 5750.