The specified capacitor is a CAP CER 12PF 300V C0G/NP0 0603. It has a capacitance value of 12 pico Farads with an accuracy of ±2% and can withstand a maximum voltage of 300 volts. This ceramic capacitor is categorized as C0G, also known as NP0 in metric notation, and is available in the 0603 (1608 Metric) package size.