The 900 mOhm ESR at 100 kHz sets the ripple current ceiling — for a 3.3 V POL regulator output drawing 1 A, the self-heating from the ripple component stays under the 125 °C limit as long as the RMS ripple current does not exceed the datasheet derating curve.
Full military temperature band — -55 to +125 °C
This cap holds its tolerance across the avionics and downhole thermal envelope without derating the voltage below 20 V — the voltage derating rule of thumb (50 % for tantalum) still applies, but the rated voltage itself does not need to be reduced for the temperature range.
Lifecycle status is Active. KYOCERA AVX continues production of the TAJ series in this D case; there is no last-time-buy deadline and no forced redesign for a replacement part.