The TAJC477M004RNJ: This is a 470 µF molded tantalum capacitor rated at 4 V with a 300 mOhm ESR, in the C-size case (6.00 mm x 3.20 mm footprint). The ±20% tolerance is standard for tantalum electrolytics; the actual capacitance at the rated 4 V bias will be near the nominal value, but derate the applied voltage to 2/3 of rating (2.7 V) for reliable operation — a common design practice with tantalum capacitors to avoid surge failures.
The ESR is specified at 25°C; expect it to increase at low temperature and decrease slightly at high temperature, which affects the ripple current handling and transient response across the operating band.