What this cap is and where it sits
The TAJB224K050RNJ: This is a molded tantalum capacitor from the TAJ series, 0.22 µF at 50 V with ±10% tolerance. The B case (1411 / 3528 metric) is a common footprint for low-profile board layouts. The 14 Ohm ESR is a design parameter — it caps the ripple current you can push through without self-heating the part above its rating.
