What the 0.47 µF at 25 V rating means for your BOM
The TAJR474K025RNJ: At 0.47 µF and 25 V, this TAJ-series molded tantalum capacitor fits decoupling or timing roles where the rail voltage stays under 25 V and the capacitance budget is tight — think a 3.3 V or 5 V supply rail in a sensor module or a small-signal filter node. The ±10% tolerance is tight enough for most RC timing circuits; if the application needs a narrower window, the 5% grade in the same series is the next step up.
The molded case and 0805 footprint keep the part stable across the full range — no derating curve to watch until you cross 85°C, where the voltage rating typically starts to roll off per the manufacturer's guidelines.
0805 (2012 Metric) case, size code R, with dimensions 2.05 mm x 1.30 mm and a seated height of 1.20 mm max. The 15 Ohm ESR at 25°C is the number to check for ripple current handling — if your circuit draws more than a few tens of mA AC ripple, the self-heating from that ESR will push the internal temperature above the ambient rating.