330 µF bulk decoupling with 50 mOhm ESR
The TPSE337M010R0050: That ESR figure is the key selection parameter for power rail filtering — it determines the ripple current handling and the transient voltage deviation during load steps. The 10 V rating on a 330 µF part means you should derate by 50% for reliability in a low-impedance circuit — that puts the recommended working voltage at 5 V or less. Running it at 8 V continuous cuts the lifetime margin significantly on a tantalum.
The capacitance tolerance is ±20% across this range — typical for a tantalum, so budget the low-temperature capacitance drop (about 10-15% at -55°C) in your worst-case ripple analysis. The ESR also rises at low temperature; expect roughly 2x the 25°C value at -55°C, which affects the ripple current rating at cold start.