The part number MCASE21GAB5475KTNA1J refers to a CAP CER 4.7UF 16V X5R 0805 ceramic capacitor. It has a capacitance value of 4.7 microfarads, operates at a voltage rating of 16 volts, and conforms to the X5R specification for temperature stability and insulation resistance. The capacitor's package size is 0805 (2012 metric) in accordance with the manufacturer's designation.