1.3 Ohm ESR — the ripple-current ceiling and output-voltage droop under transient load
The TAJW686K010RNJ: The 1.3 Ohm ESR sets the self-heating floor under ripple current and the output-voltage droop during a load transient. For a 68 µF capacitor on a buck converter output, that ESR contributes roughly 80 mV of droop per amp of step load — check the ESR against your ripple budget before committing the BOM line.
It fits applications that see thermal cycling from cold-soak to under-hood or avionics hot-side — the molded case and wide band mean the capacitance and ESR stay within spec across the extremes.
The product status is Active.