Dual Schottky in a small footprint
The Infineon BAT5405WE6327HTSA1 is a dual common-cathode Schottky diode in a compact SC-70 (SOT-323) surface-mount package. Each diode is rated for 200 mA average rectified current with a 30 V reverse voltage maximum. The 5 ns reverse recovery time suits high-frequency switching applications like OR-ing diodes, flyback clamping, and low-voltage rectification in portable or space-constrained designs.
Key ratings for the BOM decision
The 800 mV forward voltage drop at 100 mA is typical for a Schottky at this current level — expect lower Vf at lighter loads, which helps keep conduction losses down in low-power rails. Reverse leakage is specified at 2 µA at 25 V, a figure that rises with junction temperature; the 150°C maximum junction temperature gives headroom for thermal derating in warm environments. The dual-diode configuration in a single SC-70 package saves board space compared to two discrete SOD-323 devices, though the common-cathode arrangement means the two anodes are independent — useful for steering or clamping where both cathodes share a node.
Infineon has marked the BAT5405WE6327HTSA1 as obsolete.