ESR limits — not just a capacitance number
The TPSA685M016R1500: This 6.8 µF, 16 V rated molded tantalum carries a 1.5 Ohm ESR — that's the spec that governs ripple current handling and transient voltage droop in a decoupling or filter role. A lower-ESR part would be needed if the ripple current exceeds the thermal limit of this 1206 case.
Listed as Active with no NRND or EOL flag. No last-time-buy clock — this part is still in standard production from KYOCERA AVX.
