The Infineon BAV 70W H6327 is a dual common-cathode standard switching diode in a SOT-323 surface-mount package. Each diode is rated for 80 V reverse voltage and 200 mA average rectified current, with a 4 ns reverse recovery time that suits fast-switching clamp, steering, and snubber circuits. The common-cathode configuration pairs two diodes in one package, saving board space compared to two single diodes.
4 ns trr — what the switching speed buys you
A 4 ns reverse recovery time means this diode can handle fast edges without excessive stored-charge tail current. On a repair bench, that translates to clean clamping on a 10 MHz clock line or snubbing a relay coil without ringing the supply rail. For a 48 V telecom board, the 80 V reverse voltage gives comfortable margin above the nominal bus.
Package and footprint — SOT-323 reality
The SOT-323 (SC-70) body is about 2.0 mm × 1.25 mm, a common footprint shared with many small-signal transistors and dual diodes. The common-cathode pinout means the cathode is shared on one pin; the two anodes are separate. No surprises for a layout engineer — standard SOT-323 land pattern works.
Infineon lists the BAV 70W H6327 as Active. No last-time-buy notice, no discontinuation risk for current production.