33 µF at 16 V — the rail decoupling fit check
The TPSB336M016R0350 delivers 33 µF capacitance at a 16 V rated voltage — the first pass is whether the rail you are decoupling stays below 16 V with margin for transients. With a 350 mOhm ESR, this molded tantalum handles ripple current without excessive self-heating; the ESR figure is the one to use for ripple voltage calculation at the switching frequency.
Package fit — 1411 (3528 Metric) / 1210 footprint
Manufacturer size code B maps to the 1411 (3528 Metric) / 1210 footprint; confirm the pad layout on your PCB matches the 3.50 mm x 2.80 mm land pattern before committing the BOM.