The capacitor in question is a CAP CER 18PF 250V C0G/NP0 0805, which has a capacitance value of 18 picofarads with ±5% tolerance. It operates at a maximum voltage rating of 250 volts and is constructed using ceramic materials designated as C0G or NP0. The component's dimensions are suitable for placement in an 0805 (2012 Metric) footprint.