A ceramic capacitor with the designation CAP CER 1200PF 630V C0G/NP0 1812 is a specific type of component. It has a capacitance value of 1200 pF and operates within a voltage range of 630V. The C0G, also known as NP0, classification refers to its temperature stability characteristics. This capacitor is measured in the metric size 1812 (or 4532), which indicates its dimensions.