The TAJ series is a general-purpose molded tantalum, not a low-ESR or polymer type — the 900 mOhm ESR is typical for this construction. For high-ripple or low-impedance rails (e.g., FPGA core decoupling), a polymer or low-ESR tantalum would be a better fit; for bulk hold-up or input filtering, this part works within its ripple rating.
The 125°C upper limit is the case temperature; derate voltage above 85°C per standard tantalum practice (typically 50% derating at 125°C).
EIA 2917 (7343 Metric) molded case, size code E — 7.30 mm x 4.30 mm footprint, 4.30 mm seated height. This is a surface-mount chip with no polarity marking ambiguity: the anode band runs on the positive side. The 0.90 mm terminal width is standard for 2917; ensure the solder-paste stencil aperture covers at least 75% of the pad to avoid tombstoning during reflow.