A ceramic capacitor with the designation CAP CER 39PF 500V C0G/NP0 1206 is specified. It has a capacitance of 39 pF and can withstand ±5% variation in capacitance value up to 500 volts. This component is part of the C0G or NP0 temperature coefficient class, which provides stable capacitance across a wide range of temperatures. The metric designation 1206 corresponds to an 1206/3216 size package.