The specified capacitor is a CAP CER 1.8PF 300V C0G/NP0 0505 model with precise capacitance and voltage ratings. It has a value of 1.8 pF, tolerance of ±0.05pF, and operates at a maximum voltage of 300V. The ceramic material used is C0G or NP0 (1B), and the case size is 1313 metric equivalent to 0505 in other measurements.