Why the AEC-Q200 grade matters for your BOM
Sizing the bulk cap for a 10 V rail
The ±10% tolerance means the actual capacitance on the reel is between 19.8 µF and 24.2 µF, tight enough for filter time constants.
ESR is 2.4 Ohm at 100 kHz. That is moderate — fine for decoupling a 10 kHz to 100 kHz switching regulator output, but too high for a high-ripple buck converter output where you would want ESR under 100 mOhm. The self-heating from ripple current will be noticeable above 300 mA RMS; check the thermal derating curve if your load pulls more.
Package and footprint — 1411 (3528 Metric) case B
The case is size B per the manufacturer code, measuring 3.50 mm x 2.80 mm with a seated height of 2.10 mm max. That is the standard 1210 footprint — the same pad layout as many other 22 µF/10 V tantalum caps, so swapping in a different brand or series usually means the same copper pattern.
Lifecycle and sourcing — still active, no LTB window
It is a current production part from KYOCERA AVX, available through independent distribution.