The specified component is a CAP CER 18PF 250V C0G/NP0 1210 capacitor. This is a ceramic capacitor with a capacitance of 18 pF and a voltage rating of 250 volts. It falls under the C0G or NP0 type, which indicates that it has a stable temperature characteristic and minimal change in capacitance with temperature. The size of this component is specified as 1210 (3225 Metric).