Power rail decoupling — ESR and ripple current
The TPSD337K006R0100: The 100 mOhm ESR at 100 kHz sets the self-heating under ripple current: for a given RMS ripple current I, the internal temperature rise is I² × 0.1 Ω, so a 1 A ripple adds 0.1 W of dissipation. The molded case and 125°C rating give headroom, but the ESR is higher than a polymer or MLCC alternative, so ripple current capability is the limiting factor in a switching-regulator output. The ±10% tolerance and general-purpose feature set mean this is not a low-ESR or automotive-grade part — it fits commercial and industrial designs where the 100 mOhm ESR is acceptable and the 125°C ceiling covers ambient temperatures up to 85°C with derating.
Footprint and reflow — 2917 D-case
The manufacturer size code D is the standard high-capacitance tantalum footprint — the same pad layout used by other D-case tantalums from Kemet, Vishay, and AVX, so the board layout is interchangeable. The 3.10 mm height may conflict with sub-3 mm enclosure clearances; verify the top-side keep-out zone before committing the BOM.