High-temp endurance and ESR — what drives the selection
The TAJD106K035SNJ: Rated for 2000 hours at 125°C, this TAJ-series tantalum capacitor survives the thermal profile of an engine-bay ECU or a downhole sensor module without derating the lifetime budget. The 1-ohm ESR at 100 kHz sets the ripple current ceiling — for a 100 kHz buck converter output, the self-heating from ripple current stays manageable as long as the RMS current through the cap is kept under the datasheet limit.
Package and mounting — 2917 footprint
Standard 2917 (7343 Metric) case, size code D, measuring 7.30 mm x 4.30 mm with a seated height of 3.10 mm.
No pin-compatible direct replacement is recorded; the TAJ series is the current production family.
