This TAJB226M020RNJV is a 22 µF molded tantalum capacitor rated at 20 V, with a 1.8 Ohm ESR at 100 kHz. The 20 V rating gives you headroom on a 12 V rail or a clean 3.3 V output — the cap sees maybe 5 V ripple, so the derating margin is comfortable. The 1.8 Ohm ESR means the ripple current rating is modest; it will handle the ripple from a switching regulator but don't expect it to absorb high-frequency transients the way a low-ESR polymer would.
That's the full military temperature band — this cap is at home in an avionics power supply, a downhole tool, or an engine-bay ECU where the ambient hits 105°C and the self-heating adds another 20°C. Standard tantalums start derating above 85°C; this one holds its rated voltage and life all the way to 125°C.