The part number MCASJ105BB5475MFNA1J corresponds to a ceramic capacitor with the following specifications: capacitance value of 4.7 microfarads, tolerance of ±20%, voltage rating of 6.3 volts, and an X5R dielectric material in a 0402 (1005 metric) package size. This component is suitable for use in various electronic applications where a small footprint and reliable performance are required.