The part number MCASU063SCG9R1DFNA01 corresponds to a specific ceramic capacitor manufactured by Micrel, with the designation CAP CER 9.1PF 50V C0G/NP0 0201. This component has a capacitance value of 9.1 pF and an operating voltage rating of 50V. It is classified as a C0G or NP0 type capacitor, which indicates its stability over temperature. The package size is specified as 0201 (equivalent to the metric size 0603). This component appears to be sourced from Adibuja.