47 µF, 10 V, 650 mOhm ESR — the bulk decoupling fit
This combination is a standard bulk decoupling choice for a 3.3 V or 5 V rail that needs local energy storage — the ESR sets the ripple current rating and the filter pole location, so a 650 mOhm part is suited for moderate-ripple supplies rather than ultra-low-ESR switching regulators where a 100 mOhm polymer cap would be specified.
The molded case and the tantalum anode construction are inherently hermetic compared to a wet electrolytic, so the capacitance and ESR shift are predictable across the range.
1411 (3528 Metric) / 1210 — two footprint options
The case is listed as both 1411 (imperial) and 3528 Metric (3.50 mm x 2.80 mm), with a seated height of 2.10 mm max. This dual code means the part fits either the imperial 1210 or the metric 3528 footprint — a board laid out for the metric designation will accept this part without a pad revision. The size code B is the standard 1210 body, so no special pad geometry is required.