33 µF 35 V D-case tantalum — bulk cap for tight voltage margins
The TAJD336M035RNJ: This is a 33 µF, 35 V molded tantalum capacitor in the TAJ series, D case (2917 / 7343 Metric), with 900 mOhm ESR and ±20% tolerance. The 35 V rating gives comfortable headroom on 24 V rails and covers 12 V with margin for ripple and transients.
ESR and ripple current budget
For a 100 kHz buck converter output, the ripple current squared times ESR gives the internal temperature rise — budget this against the 125°C ceiling.