The specified capacitor is a CAP CER 18PF 50V C0G/NP0 1210 with an approximate capacitance of 18 picofarads and a tolerance of ±1. It operates at a maximum voltage of 50 volts and has dimensions corresponding to the 1210 (3225 Metric) package size, which is classified as a ceramic capacitor within the C0G or NP0 temperature range.