The TAJD226M016RNJV: This is a 22 µF, 16 V molded tantalum capacitor in the D case (2917 / 7343 Metric). The 16 V rating gives headroom on a 12 V rail — derate to 50% of rated voltage for tantalum reliability, so 8 V working voltage is the practical ceiling for this part in a power supply. At 125°C ambient, the 2000-hour lifetime rating means this cap is suited for applications where the board sees sustained high temperature, like an engine-bay ECU or an industrial motor drive.
D case footprint — board layout fit
The D case measures 7.30 mm x 4.30 mm with a seated height of 3.10 mm max. The 2917 (7343 Metric) footprint is a standard tantalum case size — the land pattern is well-documented and the pad geometry for reflow soldering follows the IPC-7351B standard for this package.