The TAJA225K025H is a molded tantalum capacitor from the KYOCERA AVX TAJ series, rated at 2.2 µF with a 25 V working voltage and ±10% tolerance. Its 7 Ohm ESR is typical for a small-case tantalum at this capacitance — expect some ripple heating in high-frequency decoupling, but it's well within the derating curve for most general-purpose bypass and filtering roles on a 25 V rail.
It suits designs that see cold-soak at altitude or heat soak near an engine bay — outdoor telecom, industrial control, and automotive auxiliary circuits are typical homes for a TAJ-series part at this voltage and capacitance.