The part number is CAP CER 820PF 50V C0G/NP0 0805. This refers to a specific type of ceramic capacitor with the following characteristics: it has an capacitance value of 820 pF and operates at a voltage rating of 50V. It belongs to the C0G (NP0) classification, indicating its temperature stability and frequency characteristic. The capacitor is in the 0805 metric package size.