Capacitance, voltage, and temperature grade
The TAJR225K010SNJ: Rated 2.2 µF at 10 V with ±10% tolerance — this is the primary BOM fit check for a decoupling or filtering slot on a low-voltage rail.
ESR and the 0805 package
15 ohm ESR at 100 kHz typical — this is on the high side for a 2.2 µF tantalum. The 2.05 mm x 1.30 mm footprint is standard for this package; the low 1.20 mm seated height helps in tight board stacks.
Listed as Active on the KYOCERA AVX product line.
