The specified capacitor is a CAP CER 120PF 1.2KV C0G/NP0 1808 type with the following key characteristics: - Nominal capacitance: 120 pF - Capacitance tolerance: ±2% - Voltage rating: 1200V (1.2kV) - Ceramic material class: C0G/NP0 (designated as Class 1 in metric systems, corresponding to '1B' in the given reference) - Capacitor size and form factor: 1808