The TPSE107M020R0150: That capacitance and voltage pair makes it a natural fit for output filtering on a 12 V buck converter or hold-up storage on a 5 V rail where the margin to the 20 V rating gives comfortable headroom against ripple and transients. The 150 mOhm ESR is the spec that governs ripple current handling — lower ESR means less self-heating for the same ripple, so this part can sink more AC current before the internal temperature rise limits its life. In a 500 kHz switcher output stage, that ESR also sets the output voltage ripple amplitude against the load step.
Case, footprint, and temperature range
This is the standard footprint for a 100 µF / 20 V tantalum in this package class — the land pattern matches the EIA 7343-31 pad geometry used across the TPS family. The molded construction gives it mechanical rigidity and moisture resistance over that range compared to conformal-coated parts.