Rated 22 µF at 35 V, the TPSD226K035H0300 sits comfortably on a 12 V or 24 V bus with derating headroom. The 35 V rating leaves margin above a 24 V nominal rail, which can spike to 30 V during a load dump or hot-swap event. For a buck converter output, this ESR contributes to the output ripple voltage; at 100 kHz switching, the ripple current through the cap should be kept below the manufacturer's ripple current rating to avoid exceeding the 125 °C upper limit.
D-case 2917 — footprint and thermal considerations
The 2917 (7343 metric) case measures 7.30 mm x 4.30 mm with a seated height of 3.10 mm max. The D-case footprint is standard across the TPS series; the same pad layout accepts lower-voltage or higher-capacitance siblings without a board spin. Molded construction gives a flat top and consistent standoff height, which simplifies pick-and-place and underfill for conformal-coated assemblies.
The TPS series is a broad KYOCERA AVX molded tantalum family; the D-case 22 µF/35 V variant is a common value that typically stays in production across multiple date codes.