The specified component is a ceramic capacitor with the designation CAP CER 18PF 50V C0G/NP0 0603. Its key characteristics include an capacitance value of 18 pF ±10 and a voltage rating of 50V. It follows the C0G, or NP0, temperature coefficient specifications for a ceramic capacitor and is packaged in the 0603 (1608 metric) form factor.