Bulk capacitance for a 10 V rail — ESR and footprint
The TPSE227M010R0100: That ESR figure is the key to its decoupling performance: at 100 kHz, the impedance is dominated by the 100 mOhm resistive term, not the capacitive reactance, so it shaves ripple voltage on a 10 V rail where a lower-ESR ceramic would sing at the same frequency. The seated height of 4.30 mm keeps it under most low-profile clearance limits on a 1.6 mm board.
Temperature range and operating environment
At 125°C, the voltage derating guideline for tantalum capacitors typically recommends 50% of rated voltage — so for a 10 V part, keep the applied DC bias at or below 5 V when the ambient hits the ceiling.