The TAJD687K004RNJ delivers 680 µF at 4 V in a molded 2917 (7343 Metric) case — a density that suits low-voltage rail hold-up or bulk decoupling where board area is tight. 500 mOhm ESR means the ripple current rating is modest; this part is chosen for capacitance, not low-impedance filtering.
The 4 V rating is the steady-state limit; derate for ripple voltage and transient overshoot.
Active lifecycle — no LTB window yet
This part is still eligible for new designs and standard BOM replenishment through independent distribution.