6.8 µF, 10 V — bulk decoupling on a low-voltage rail
The TAJA685K010HNJ: This is a 6.8 µF tantalum capacitor in the molded TAJ series, rated 10 V with ±10% tolerance.
ESR and lifetime at temperature
ESR is 4 ohm at 100 kHz — typical for a small-case tantalum; this limits ripple current in a switching supply and contributes to self-heating. The rated lifetime is 2000 hours at 125°C; derating voltage and reducing ambient temperature extends life significantly.
KYOCERA AVX lists the TAJA685K010HNJ as Active.
