D-case tantalum — 47 µF, 16 V, 200 mΩ ESR
The TPSD476M016R0200: The 47 µF capacitance at 16 V rated voltage, combined with a 200 mΩ ESR, targets bulk decoupling on power rails where ripple current handling matters more than capacitance density. The 200 mΩ ESR at 100 kHz is the figure that governs the ripple current rating — a lower ESR means the part can absorb more AC ripple without exceeding the internal temperature rise limit. In a 5 V rail with 100 mV pk-pk ripple at 100 kHz, the RMS ripple current drawn is roughly 0.5 A, and the power dissipation in the ESR is about 50 mW, well within the D-case's thermal budget.
Operating temperature spans -55°C to 125°C, covering the full military/industrial range. At 125°C the rated voltage must be derated per the manufacturer's guidelines — typically 50 % of the 16 V rating, so the applied DC bias should not exceed 8 V at the high end of the temperature range. The 125°C ceiling suits the part for deployment in engine-bay electronics, downhole instrumentation, or avionics power supplies where the board ambient reaches 125°C. The 2917 (7343 Metric) D-case footprint is shared across multiple tantalum manufacturers — a PCB layout designed for the standard D-case accepts this part and most competitors' D-case parts, simplifying second-sourcing.
Active lifecycle — sourcing posture
No pin-compatible alternative is required, but the D-case footprint allows a parametric swap to a different vendor's D-case tantalum if supply tightens.