The TAJD226K025ANJ: 22 µF at 25 V with 900 mOhm ESR at 100 kHz — this D-size tantalum is a standard bulk decoupling cap for a 3.3 V or 5 V power rail in a mixed-signal board. The 900 mOhm ESR dampens the output ripple from a switching regulator; the capacitance holds the rail during load steps. The ±10% tolerance keeps the in-circuit capacitance within the regulator's stability window without oversizing.
The 2000 h at 125 °C means it survives the thermal profile of a sealed enclosure near a hot processor without derating the useful life.
Active — no last-time-buy horizon
No need to plan a last-time-buy or qualify a second source for this BOM position.