The TAJA225M025SNJ is a molded tantalum capacitor from the KYOCERA AVX TAJ series, rated at 2.2 µF with ±20% tolerance and a 25 V working voltage.
The 7-ohm ESR (equivalent series resistance) is typical for a small-case tantalum at this capacitance and voltage. In a decoupling or bypass role — say, across the supply pins of an op-amp or a small digital IC — the ESR is acceptable. For high-ripple bulk filtering on a power rail, the self-heating from 7 ohms at ripple current will limit the usable AC load; a lower-ESR polymer or aluminium electrolytic would be a better fit.