The specified capacitor is a 1.5 kV ceramic component, part number CAP CER 15PF 1.5KV NP0 1210. It has a capacitance of 15 pF with ±5% tolerance and can withstand 1500 volts (1.5 kV) of DC voltage. The capacitor's construction is based on the C0G, or NP0, dielectric material and features a 1210 case size, which corresponds to a metric 3225 dimension.