100 µF bulk decoupling with a 150 mOhm ESR floor
The 150 mOhm ESR sets the ripple current handling and the self-heating under load — for a 100 kHz buck converter output, that ESR contributes roughly 15 mV of ripple per amp of ripple current, which is manageable for most 3.3 V and 5 V rails.
Military temperature range and D-case footprint
The D-case 2917 (7343 Metric) package is a standard land pattern shared by multiple tantalum and polymer suppliers, so the PCB footprint is interchangeable without a layout change.
