The specified component is a ceramic capacitor with part number CAP CER 12PF 6KV C0G/NP0 1812. It has a capacitance of 12 pF and tolerates ±5% deviation in value. This capacitor can withstand an operating voltage of up to 6000V (6kV) and features a C0G, or NP0, dielectric material with a temperature coefficient of 1B. The component is packaged as a 4532 metric case size, which corresponds to the 1812 designation in imperial measurements.