The TAJB105K035H: Full military temperature range (-55°C to 125°C) means this molded tantalum holds its 1 µF ±10% capacitance and 6.5 Ohm ESR across avionics cold-soak and engine-bay heat cycles — no derating step at the temperature extremes.
ESR and voltage derating — what they mean on the board
6.5 Ohm ESR at 1 µF is the ripple-current limit: a 35 V rail with 100 mA ripple dissipates ~65 mW in the cap — fine for bulk decoupling, but a switching supply output needs a lower-ESR polymer or MLCC if ripple current exceeds the cap's self-heating budget. 35 V rated voltage on a 1 µF tantalum — standard practice is to derate to ≤20 V applied (60 % margin) to avoid surge failure from inrush or voltage spikes.
Footprint and package fit
Case size 1411 (3528 Metric) / 1210, size code B — 3.50 mm x 2.80 mm footprint, 2.10 mm seated height. Surface-mount, supplied on tape and reel.