ESR is specified at 2.8 Ohm at 100 kHz. This value sets the ripple current rating and the output voltage ripple under load — higher ESR means more self-heating and less effective decoupling at switching frequencies. For a 100 kHz buck converter output, the 2.8 Ohm ESR contributes directly to the ripple voltage; a lower-ESR part would be needed if the ripple budget is tight.
Surface-mount 1411 case — board-fit note
Package is 1411 (3528 Metric) with dimensions 3.50 mm x 2.80 mm, seated height 2.10 mm max. The B-size code footprint is standard for 10 µF tantalum capacitors in this voltage class.
