The TPSE226K035R0300: The 300 mOhm ESR is the figure that governs ripple current handling. For a buck converter output, the ripple voltage is I_ripple × ESR; a 1 A ripple current produces 300 mV of ripple on this cap. If the downstream load needs under 100 mV ripple, you either parallel two of these or step up to a lower-ESR polymer part.
E-case 2917 — standard footprint, no layout surprises
This is the standard EIA-7343-31 case for 22 µF / 35 V tantalums; the pad layout is shared with dozens of other suppliers, so a second-source swap (Kemet T495, Vishay 593D) fits the same land pattern without a board spin. Operating temperature spans -55°C to 125°C, covering the full industrial range and the under-hood automotive ambient. No derating needed at 85°C; above 85°C the voltage derating curve in the TPS datasheet applies — typically 2/3 of rated voltage at 125°C.
Active production — no end-of-life clock ticking
The TPS series is a general-purpose molded tantalum line, not a low-profile or high-reliability COTS+ grade. If the application calls for Weibull grading or surge-current testing, the TPS series does not carry those options — that would be the CWR or F97 series instead.