The TAJD475M050RNJ: This is a KYOCERA AVX TAJ series molded tantalum capacitor in the D case size (2917 / 7343 Metric), rated 4.7 µF at 50 V with ±20% tolerance. The molded construction gives it a consistent, low-profile body (0.122" seated height) that suits tight board stacking or high-density surface-mount layouts.
In a 50 V rail with 100 mA ripple, the internal temperature rise stays modest, but at higher ripple currents the ESR contributes directly to the capacitor's core temperature and should be derated per the manufacturer's guidelines.