47 µF bulk cap for 10 V rails — ESR is the selection gate
The TPSB476M010Y0500: A 500 mOhm ESR means the capacitor self-heats under ripple; for a 100 kHz buck converter, the ripple current should be derated from the 25°C limit to stay within the 125°C max operating temperature.
Molded case, B size — footprint and layout fit
The molded case (EIA 3528-21 / 1411 Metric) measures 3.50 mm x 2.80 mm with a seated height of 2.10 mm max. The B-size footprint is common across the TPS series; the same pad layout accepts multiple capacitance/voltage ratings, so a single PCB land pattern can serve a range of BOM variants without a board spin.