Schottky pair for high-speed switching
The Infineon BAT5404E6327HTSA1 is a Schottky diode array with two diodes connected in series inside a single SOT-23 package. The series configuration means the two diodes share a common connection at the cathode of one and the anode of the other, so the part functions as a single series string in one package — useful for creating a voltage drop or for biasing where two series diodes are needed in a compact footprint.
Switching speed and forward drop
Forward voltage is 800 mV maximum at 100 mA forward current — typical for a 30 V Schottky in this current class. The 2 µA reverse leakage at 25 V reverse bias is low enough for battery-powered circuits where quiescent draw matters.
Package and board integration
Housed in a PG-SOT23 (SC-59 / TO-236-3 equivalent) surface-mount package, the BAT5404E6327HTSA1 occupies minimal board area. The three-pin footprint matches standard SOT-23 land patterns — the series pair uses pin 1 as the common node, pin 2 as the anode, and pin 3 as the cathode of the series string. The junction temperature rating of 150°C maximum gives thermal margin for operation in warm enclosures or near other dissipating components, as long as the average current stays within the 200 mA per-diode limit.
The part is ROHS3 Compliant, meeting the current restriction-of-hazardous-substances directive for lead-free assembly.