Active production — what it means for the BOM line
The TPSE226K035R0200: That means the BOM position is stable: no board-spin needed to swap in a different case size or voltage rating, and no risk of the manufacturer cutting the line mid-production.
The 200 mOhm ESR is the number that governs ripple current handling and output voltage ripple in a switching regulator. For a 22 µF output cap on a 500 kHz buck converter, 200 mOhm ESR keeps the ripple voltage under 20 mV at moderate load — a solid fit for analog or logic supply rails that need clean DC.