The TAJA225K006RNJ is a molded tantalum capacitor from the KYOCERA AVX TAJ series, rated 2.2 µF at 6.3 V with ±10% tolerance. The 1206 (3216 Metric) case and 9 ohm ESR are typical for a small-case tantalum — the ESR figure sets the ripple current ceiling and the self-heating budget in a decoupling or filtering role. The -55 to 125 °C operating range places it beyond commercial-grade parts — this capacitor can sit on a board in an engine bay, an outdoor telecom cabinet, or a satellite power rail without the temperature derating that a 105 °C-rated part would need.
The TAJ series is a broad, mature family; availability is generally stable.
1206 (3216 Metric) case, size code A — 3.20 mm x 1.60 mm footprint, 1.80 mm seated height. Surface-mount, compatible with standard reflow profiles. The molded body offers good mechanical stability during board handling and rework.