100 µF bulk capacitance in a 1411 footprint
The TAJB107K002RNJ delivers 100 µF of capacitance in a molded 1411 (3528 Metric) case — a 3.50 mm x 2.80 mm footprint that fits tight decoupling banks or output filter positions on space-constrained boards. With a 2.5 V rating, this part is sized for 1.8 V or 2.5 V rails where the applied voltage stays below 80 % of the rated voltage — a standard tantalum derating practice to keep the failure rate low.
The 1.4 Ohm ESR at 100 kHz sets the ripple current ceiling and the self-heating under AC load — for a 100 µF output cap on a 500 kHz buck converter, the ESR dominates the output ripple voltage and the capacitor's internal temperature rise.