The specified capacitor is a CAP CER 3900PF 50V C0G/NP0. It has a capacitance value of 3900 pF and operates at ±5% tolerance within a 50V voltage range. This ceramic capacitor features the C0G, NP0 (1B) dielectric material and is identified by the 1812 package size, equivalent to 4532 in metric measurements.