The Infineon BAT6404E6327HTSA1 is an automotive-grade Schottky diode array configured as one pair in series, housed in a PG-SOT23 surface-mount package. The 5 ns reverse recovery time qualifies it for fast-switching roles such as polarity protection, OR-ing diodes, and snubber clamping in automotive ECUs, battery-management systems, and DC-DC converter stages. AEC-Q101 qualification confirms it for under-hood and chassis-domain deployment where temperature cycling and vibration resistance are required.
ROHS3 compliance is confirmed. No direct replacement has been announced; the BAT64 series includes other configurations (single, dual common-cathode) if the series-pair topology does not fit.