The specified capacitor is a type of ceramic capacitor designated as CAP CER 39PF 1.5KV C0G/NP0 1812. It has a capacitance value of 39 pF with a tolerance of ±5% and can withstand a voltage rating of 1500V (1.5kV). The C0G, also known as NP0 (1B), designation indicates that it belongs to the C0G/NP0 class of ceramic capacitors, which are characterized by their high stability over temperature.