The specified capacitor is a CAP CER 12PF 1KV C0G/NP0 1812. Its characteristics include 12 pF capacitance with a tolerance of ±10 and it can withstand 1000 volts (1kV). It has a ceramic construction classified as C0G, also known as NP0 (1B), and is in the 4532 metric size designation for the 1812 package.