What the 80 mOhm ESR buys the bulk rail
The TPSD107K010H0080: The 80 mOhm ESR on this 100 µF tantalum sets the ripple current handling and the high-frequency impedance floor on a 10 V rail. At 100 kHz the impedance is dominated by the ESR, not the capacitive reactance — so the cap's self-heating under ripple current is directly tied to this number. For a 1 A pk-pk ripple, the internal dissipation is about 80 mW, well within the D case thermal budget at 85 °C ambient.
The molded construction and the D case (7.30 mm x 4.30 mm, 3.10 mm seated height) are standard for surface-mount tantalum in avionics power supplies, satellite bus filters, and downhole instrumentation where the ambient exceeds 105 °C. The ESR is specified at 25 °C; expect it to rise by roughly 1.5× at 125 °C — factor that into the ripple current derating.
The TPS series is a general-purpose molded tantalum line with no direct pin-compatible second source, but the D case (2917) footprint is shared by many standard tantalum caps; verify the ESR and voltage rating before substituting.