68 µF, 20 V, 300 mOhm — bulk decoupling anchor
The TPSD686M020R0300: The ESR figure is the one that governs self-heating under AC ripple — a 300 mOhm floor means the cap dissipates about 0.3 W per amp of ripple current, so the thermal budget at the board level needs a check against the ambient temperature and the 125 °C ceiling. The surface-mount package reflows on a standard profile; the molded body gives mechanical protection during pick-and-place and rework.
Temperature grade and derating margin
Rated -55 to 125 °C, this cap covers the full industrial temperature band and the lower end of automotive under-hood ambient. The 20 V rating at 85 °C derates to roughly 13 V at 125 °C per standard tantalum derating practice — a 50 % voltage margin below the rated voltage at the operating temperature is the usual reliability rule for tantalum, so a 12 V rail at 85 °C is comfortable, but a 12 V rail at 125 °C pushes the margin thin. For decoupling applications where the absolute value is not critical, this is fine; for timing or filter poles, the tolerance and temperature coefficient need to be budgeted into the design.
Active lifecycle — no end-of-life signal
Listed as Active with no NRND or EOL flags. This part is safe for new designs and ongoing production.