6.8 µF tantalum for tight-board decoupling
The TAJR685K004RNJ is a molded tantalum capacitor from the TAJ series, rated 6.8 µF at 4 V with ±10% tolerance. The 0805 case (2.05 mm x 1.30 mm footprint) fits high-density PCBs where every square millimetre counts, and the 8 Ohm ESR is typical for a small-case tantalum at this capacitance — expect ripple current handling around 200 mA RMS before self-heating becomes a concern.
Survives the oven and the environment
The molded construction handles standard reflow profiles without issue; no special bake required for MSL 1 parts, though always verify the date-code moisture sensitivity on the reel label.
The 0805 footprint is industry-standard; no layout change needed if replacing a similar 0805 tantalum from another vendor.