What the BAR46AFILM is and where it fits
The STMicroelectronics BAR46AFILM is a Schottky diode array with two diodes in a common-anode configuration, housed in a SOT-23-3 surface-mount package. Each diode is rated for 100 V reverse voltage and 150 mA average rectified current. The low forward voltage of 450 mV at 10 mA makes it well suited for low-loss OR-ing, flyback clamping, and protection circuits in battery-powered or low-voltage rail designs.
100 V reverse voltage — what it means for your BOM
The 100 V reverse voltage rating exceeds the typical small-signal Schottky. The 5 µA leakage at 75 V reverse bias is a standard figure for this voltage class.
Common-anode pair — application note
The common-anode pinout ties both cathodes to separate pins, with the shared anode on the third pin. This is the standard configuration for dual Schottky OR-ing: each cathode connects to a separate power source, and the common anode feeds the load. The SOT-23-3 footprint matches the standard small-signal layout; no board respin needed if swapping from a single Schottky in the same package.
Lifecycle and sourcing reality
This part is listed as Active on the manufacturer's lifecycle status and ROHS3 compliant. There is no NRND or EOL notice, so it remains a current-production choice for new designs.