The part number CAP CER 300PF 150V C0G/NP0 0805 refers to a specific type of ceramic capacitor. It has a capacitance value of 300 pF, operates within an allowed deviation range of ±2%, and is rated for a maximum voltage of 150V. This component utilizes the C0G (or NP0) dielectric material and is packaged in the 0805 metric case size, typically used for surface-mount applications. The mention of "2012 Metric" likely indicates that this capacitor meets standards relevant to European or other international specifications.