15 µF, 50 V, 600 mOhm ESR — the ripple-current ceiling
The TAJE156K050ANJ: The 600 mOhm ESR at 100 kHz is the key loss parameter for this 15 µF, 50 V molded tantalum from the TAJ series. That ESR sets the maximum AC ripple current the capacitor can tolerate before internal heating cuts into the 2000-hour life at 125 °C — a critical number for output filtering on a 50 V rail where the ripple current is the dominant stress.
Molded 2917 footprint, -55 to 125 °C range
The 2917 (7343 Metric) case measures 7.30 mm x 4.30 mm with a seated height of 4.30 mm. The full military-temperature range (-55 to 125 °C) and 2000-hour endurance at 125 °C qualify it for power-supply outputs near hot magnetics, engine-bay electronics, or sealed enclosures where ambient temperature runs high.