1 µF, 25 V molded tantalum in 1206 — the decoupling fit
The TAJA105M025RNJ: This is a 1 µF, 25 V rated molded tantalum capacitor from the TAJ series, in a standard 1206 (3216 Metric) surface-mount case. The 8 Ohm ESR is the figure that governs ripple current handling and self-heating in power-supply decoupling and output-filter positions.
Active production — no end-of-life watch
The TAJ series is a broad, long-running KYOCERA AVX line; this ordering code is a standard catalog item, not a custom or phased-out variant. Sourced through authorized distribution channels.
1206 footprint and polarity
Case size is 1206 (3.20 mm x 1.60 mm footprint), seated height 1.80 mm max. The molded body carries a polarity stripe — the anode is marked; reverse-voltage installation will damage the part.