A ceramic capacitor with the designation CAP CER 390PF 100V C0G/NP0 0805 has a capacitance value of 390 pF and is rated for 100 volts. Its dielectric material is classified as C0G or NP0, indicating a temperature-stable and low-loss characteristic. The capacitor's size is specified as 0805, which corresponds to the 2012 metric package.