The specified capacitor is a CAP CER 18PF 25V C0G/NP0 0603. It has an approximate capacitance of 18 pF and can withstand voltages up to 25V. The ceramic material used in this component is classified as C0G or NP0, indicating its stability across varying temperatures. The component's dimensions are consistent with the metric size 1608, also referred to as 0603 in inches.