0.47 µF at 50 V — the ESR sets the ripple floor
The TAJS474M050RNJ: The 9.5 Ohm ESR is the dominant impedance at the self-resonant frequency — for a 0.47 µF decoupling cap on a 50 V rail, the ripple attenuation is set by this resistance, not the capacitance alone. A higher-ESR part will pass more ripple current as heat; this one stays within the thermal budget of a 1206 footprint.
Molded tantalum — temperature and mounting
The 1206 molded case is a standard reflow footprint; no special pad geometry needed beyond the datasheet land pattern.
