330 µF at 4 V — bulk decoupling for low-voltage rails
The TPSD337M004R0100: The 100 mOhm ESR governs the ripple current rating and the output voltage ripple. In a switching-regulator output filter, that ESR sets the ripple voltage at the capacitor: for a given ripple current, lower ESR means less AC voltage across the cap. At 100 mOhm this part sits in the mid-range for a 330 µF tantalum — low enough to keep ripple manageable in a typical POL application, but not so aggressive that it risks inrush current issues on power-up.
D case 2917 — footprint and temperature grade
That footprint matches the common D-size tantalum land pattern; no pad geometry changes needed if swapping from another D-case vendor. Derate the applied voltage per the manufacturer's guidelines when running above 85°C — standard practice for solid tantalum capacitors to avoid dielectric breakdown.