What the 45 mOhm ESR means for your rail
The TPME107M020R0045: The 45 mOhm ESR is the key spec for a bulk tantalum cap used on a switching regulator output or as a filter capacitor. Lower ESR means less self-heating under ripple current and lower output voltage ripple — critical when the downstream load is a sensitive ADC or RF front-end.
Capacitance and voltage in a 2917 footprint
100 µF at 20 V in the 2917 (7343 Metric) case gives you a solid bulk decoupling cap for a 12 V or 5 V rail with headroom. The 7.30 mm x 4.30 mm footprint is a standard tantalum chip size — board layout is straightforward, and the 4.30 mm seated height fits most card-edge clearance limits.
The molded case handles the thermal cycling without cracking.