The specified capacitor is a 12pF, 250V ceramic capacitor with a C0G or NP0 dielectric. It has a tolerance of ±1% and measures 2225 in the metric system (or 8.66mm x 4.57mm). The part number for this component is CAP CER 12PF 250V C0G/NP0 2225 - 12 pF ±1, which is often referred to as a 1B capacitor with dimensions matching the metric code of 5763.