6.8 µF at 25 V — the bulk decoupling sweet spot
TAJB685M025RNJ is a Molded tantalum capacitor from the TAJ series by KYOCERA AVX, rated 6.8 µF with ±20% tolerance at 25 V. The 25 V rating gives headroom above a 12 V rail, making it a common choice for bulk decoupling on 3.3 V or 5 V supplies where the input sees a 12 V bus. The 2.8 Ohm ESR at 100 kHz sets the ripple current ceiling — at 6.8 µF and 25 V, this is typical for a B-case tantalum and limits self-heating in high-frequency switching applications.
Active production — no LTB deadline to chase
B-case footprint — 1411 / 1210, same body
The package is 1411 (3528 Metric) / 1210, size code B, measuring 3.50 mm x 2.80 mm with a seated height of 2.10 mm max. The 1210 inch-code alias matches the common B-case footprint — confirm the pad layout against the 3528 metric dimensions to avoid a land-pattern mismatch.
It fits avionics, downhole tools, and satellite power rails without a grade upgrade — the 25 V derating at 125°C should be checked against the application voltage.