The specified component is a 0603 (1608 metric) ceramic capacitor with the designations CER 1PF 250V C0G/NP0. It has a capacitance of 1 pF and a tolerance of ±0.25 pF, with a maximum operating voltage of 250V. This capacitor falls under the categories of C0G and NP0, which are types of ceramic capacitors known for their stability and precision in temperature compensation applications.