The part number MCASJ21GSB7475MTNA1J corresponds to a CAP CER 4.7UF 6.3V X7R 0805 from the manufacturer Adibuja. It is a 4.7 microfarad ±20% ceramic capacitor with a voltage rating of 6.3 volts, packaged in an 0805 (2012 metric) case size and classified under the X7R dielectric type.