The Panasonic Electronic Components part number MA6X12400L in a SOT-23-6 case, is no longer available. Consider the Toshiba Semiconductor and Storage # 1SS309(TE85L,F) packaged in a 5-pin SC-74A/SOT-753 case, as a possible substitute. The substitue has a similar footprint, minus a pin. Please review the datasheet link to ensure it will work in your application.
SOT-23-6 vs SC-74A, SOT-753
