The CAP CER 18PF 50V C0G/NP0 0805 is a specific type of ceramic capacitor. It has an capacitance rating of 18 pF and operates at a maximum voltage of 50 volts. The C0G designation indicates that it belongs to the temperature-compensating class of ceramics, while NP0 signifies its near-zero temperature coefficient. This capacitor comes in an 0805 metric package, measuring 2012 size.