Bulk decoupling for 1.8–3.3 V rails
The TAJX337M004RNJ: 330 µF at 4 V with 300 mOhm ESR — this TAJ-series molded tantalum sits on a 1.8 V or 3.3 V rail as the primary bulk cap, handling ripple current from a downstream regulator or the input stage of a DC-DC converter.
Temperature grade and board fit
Rated -55 to +125 °C, so it holds capacitance and ESR across the full military/industrial temperature band — avionics, outdoor telecom enclosures, and engine-bay electronics all fall inside this window. 2917 (7343 Metric) footprint, 7.30 x 4.30 mm body, 1.50 mm seated height — fits under a low-profile enclosure or a heatsink overhang. The X case code matches the standard 2917 land pattern; no footprint adjustment needed.
No official second source or pin-compatible cross listed. The TAJ series is widely stocked across independent channels; a same-series alternate with the same capacitance and voltage rating is a direct swap.