The CAP CER 12PF 200V C0G/NP0 1808 is a type of ceramic capacitor. It has a capacitance value of 12 picoFarads and operates within a voltage range of 200 volts. The designation C0G, also known as NP0, indicates that it is a temperature-compensating ceramic material. This capacitor is available in the metric size 1808 (which corresponds to the imperial size 4520).