What the 22 µF, 10 V rating means for your power rail
The TPSB226K010H0500: This is a 22 µF molded tantalum capacitor rated at 10 V DC — a common bulk decoupling value for 3.3 V and 5 V rails where the derating margin (typically 50% of rated voltage) keeps the part below the recommended working voltage. The ±10% tolerance holds the nominal capacitance within 19.8–24.2 µF, tight enough for most filter and hold-up circuits without over-specifying. The 500 mOhm ESR limits ripple current handling and output voltage ripple. For a switching regulator, this ESR contributes ripple that matters for noise-sensitive loads like ADC front-ends or RF power supplies.
The molded case provides mechanical stability and moisture resistance over that range.
Housed in the B case size — 3.50 mm x 2.80 mm footprint, 2.10 mm seated height.