What the 70 mOhm ESR buys you on a 35 V rail
The TPMD226K035R0070: At 22 µF and 35 V, the 70 mOhm ESR keeps the ripple-current self-heating low enough that the capacitor can sit on a 12 V-to-3.3 V buck output without derating the ripple current below the application's needs. The molded case and 2917 footprint mean the part stands up to reflow soldering without cracking — a common failure mode in unqualified tantalums on a power rail.
Temperature grade and the environments it fits
The capacitor holds its capacitance and ESR within datasheet limits across that span, which matters for a satellite power bus that cold-soaks at -55 °C and then sees 125 °C in a hot bay. The molded construction also resists moisture ingress better than a conformally-coated chip, so it can live in an outdoor telecom cabinet that cycles through condensation.
Active product status — no EOL notice, no last-time-buy window.