The TPSD156K035B0100: The D case (2917 / 7343 metric) is a common footprint — 7.30 mm x 4.30 mm, 3.10 mm seated height — so it fits boards already laid out for the standard D-size tantalum.
100 mOhm ESR keeps self-heating from ripple current manageable — the internal temperature rise stays negligible against the ambient. 35 V rated on a 12 V rail gives 65 % derating — comfortable. On a 24 V rail the derating drops to about 46 %, which is below the 50 % rule many high-reliability specs call for. Budget a higher voltage part if the board sees 24 V and the customer requires full derating. ±10 % tolerance is standard for tantalum — the actual capacitance at 25 °C and 0 V bias will be within 13.5 µF to 16.5 µF. At full rated voltage the capacitance drops by about 10–15 % due to DC bias effect, so the effective value on a 12 V rail is closer to 13 µF.
The TPS series includes multiple voltage and capacitance variants in the same D case — if you need a different value or voltage, the footprint stays the same.