The CAP CER 1200PF 63V C0G/NP0 1812 is a type of ceramic capacitor. It has a capacitance value of 1200 pF and operates within a voltage range of ±63V. This component is classified as a C0G/NP0 device, which is a specific type of ceramic material known for its stability in temperature. The part number also indicates that the capacitor is housed in a 1812 case size, equivalent to a 4532 metric measurement.