This is a surface mount ceramic capacitor with the part number CAP CER 680PF 100V C0G/NP0 0805. It has a capacitance value of 680 pF and can withstand a maximum voltage of ±1 kVDC. The capacitor's dimensions are in accordance with the 2012 metric (0805) and it is constructed using a C0G/NP0 dielectric material, which provides stable temperature characteristics.