The TAJY687M002RNJ: The 200 mOhm ESR (Equivalent Series Resistance) sets the ripple current handling — at this impedance the capacitor can absorb a few hundred mA of ripple before self-heating becomes a concern, but a high-frequency switcher with fast edges will push more current through the ESR and raise the internal temperature.
The molded case (size code Y, 7.30 mm x 4.30 mm x 2.00 mm) in the 2917 (7343 Metric) footprint means the capacitor stands low on the board — good for tight vertical clearance, but the small body concentrates the self-heating, so the ripple current derating curve in the datasheet should be checked against the actual load.