47 µF bulk cap for a 6.3 V rail — the thermal and ripple current budget
The TAJA476M006RNJ: This is a 47 µF molded tantalum capacitor rated at 6.3 V, sitting in the standard 1206 case. The 1.6 Ohm ESR is the number that drives the ripple current heating — at 6.3 V and 47 µF, the self-resonant frequency lands roughly in the 100 kHz range, so this part is a natural fit for decoupling a buck converter output or a low-voltage ASIC rail where the bulk capacitance needs to stay in a single 1206 footprint. For a board that sees outdoor telecom enclosures or under-hood engine bay ambients, this cap does not require a temperature derating down at the cold end, and the 125°C ceiling means the leakage current and capacitance shift stay within the datasheet envelope at high soak temperatures.
For a procurement desk filling a BOM line, active status means the supply channel is open through independent distribution without a forced last-time-buy deadline.