500 mOhm ESR at 100 kHz typical sets the ripple current ceiling — for a 100 µF output cap on a 500 kHz buck converter, the ripple voltage at 1 A ripple current is roughly 500 mV peak-to-peak.
Package and footprint — B case, 1411 metric
Manufacturer size code B, 3.50 mm x 2.80 mm footprint, 2.10 mm seated height. The 1411 (3528 Metric) case is a standard tantalum size — the land pattern matches the EIA 3528-21 footprint; the 0.50 mm pitch termination pads are compatible with standard reflow profiles. The molded body is not hermetically sealed, so a moisture-sensitive-device bake is required if the reel has been exposed to humidity above the floor life.