50 mOhm ESR — the ripple-current ceiling
The TPSD157K010H0050: The 50 mOhm ESR sets the self-heating floor under ripple current: at 1 A ripple, the internal I²R loss is 50 mW — well within the 125°C rated ambient for a 2917 case.
The part can be quoted to order against a BOM quantity without a looming discontinuation window.
