The CAP CER 39PF 4KV C0G/NP0 2225 is a type of ceramic capacitor. It has a capacitance value of 39 pF and operates within a voltage range of ±5,000V or 4kV. This component features the C0G or NP0 dielectric material and follows the 1B specification, further categorized as 2225 with metric code 5763.