The CAP CER 15PF 4KV C0G/NP0 2220 is a specific type of ceramic capacitor. It has a capacitance value of 15 pF with a tolerance of ±2% and can withstand a maximum voltage rating of 4000V, or 4kV. This capacitor features the C0G material classification, also known as NP0 (1B), and is housed in a 2220 case size, which is equivalent to a metric size of 5750.