22 µF, 10 V, 900 mOhm — what the ratings mean on the board
The TPSA226K010R0900: 22 µF at 10 V is a common bulk decoupling value for 3.3 V and 5 V rails, providing enough charge storage to handle transient load steps without excessive voltage droop. The 900 mOhm ESR is typical for a tantalum capacitor in this case size; it limits ripple current to about 330 mA RMS at 85°C ambient, so check the ripple current in your application against the derating curve. The ±10% tolerance is standard for tantalum — the actual capacitance at the rated voltage will be near the nominal value, with a slight negative bias under DC bias.
Molded case, 1206 footprint — fits standard reflow
The molded construction in a 1206 (3216 Metric) case gives a low profile of 1.80 mm seated height, which fits under low-clearance components or boards stacked at 2 mm pitch.
Wide temperature range suits harsh environments
In an avionics power supply that sees -40°C cold soak and +105°C under full load, the part stays within its operating envelope with margin. The 125°C upper limit also suits downhole instrumentation or engine-bay electronics where ambient temperatures exceed the commercial 85°C ceiling.