The specified component is a CAP CER 15PF 3KV C0G/NP0 1812 ceramic capacitor. Its capacitance value is 15 pF with a tolerance of ±2, and it can withstand a maximum voltage of 3000V or 3kV. This capacitor has the designation C0G/NP0 in the 1812 (or metric 4532) package size.