Bulk decoupling for 50 V rails — 6.8 µF at 600 mOhm ESR
The TPSD685M050R0600: The 600 mOhm ESR keeps ripple heating under control in bulk decoupling and filtering roles on 50 V power rails.
Footprint and board integration — size code D, 7.30×4.30 mm
The 2917 footprint is a common tantalum outline — the same pad layout serves multiple suppliers, so a second-source swap on the pick-and-place reel is straightforward. Tolerance is ±20%, the standard for tantalum electrolytics. Derate the 50 V rating by 20% for reliable operation — a 40 V working voltage ceiling leaves margin against the 50 V rated maximum in steady-state use.