The part number CAP CER 680PF 100V C0G/NP0 1206 refers to a specific type of ceramic capacitor. This capacitor has a capacitance value of 680 pF and can withstand a maximum voltage rating of 100V. The designations C0G and NP0 indicate that it is classified as a temperature-compensating type with a low loss factor, making it suitable for applications where stable characteristics are required. The metric designation 1206 corresponds to the size of the capacitor in millimeters (3.2 x 1.6 mm).