4.7 µF, 10 V, 1206 — the decoupling workhorse
The TAJS475K010RNJ is a molded tantalum capacitor from the TAJ series, rated 4.7 µF at 10 V with ±10% tolerance. The 1206 case (3.20 mm x 1.60 mm) is a common footprint for general-purpose decoupling and filtering on surface-mount boards.
5 Ohm ESR — what it means for ripple and dissipation
At 5 Ohm ESR, the capacitor's self-heating under ripple current is higher than low-ESR tantalum or MLCC alternatives.
