80 V blocking, 4 ns trr — what this dual diode does on the board
The Infineon BAV99WB6327XT is a standard switching diode in a 1-pair series configuration, housed in a PG-SOT323 package. It blocks up to 80 V reverse and recovers in 4 ns, making it a fit for high-speed clamping, snubbing, and signal steering where a series-connected dual diode is needed. Each diode handles 200 mA average rectified current, with a forward voltage of 1.25 V at 150 mA. Reverse leakage is 150 nA at 70 V, and the junction is rated to 150°C.
4 ns reverse recovery — what it buys you
A 4 ns trr means this diode can switch fast enough to clamp transients on a 100 MHz clock line or snub a high-frequency switching node without adding dead time. If you are replacing a slower general-purpose diode in a protection or steering role, the BAV99WB6327XT keeps the signal edge clean. The series connection inside one package saves board space versus two discrete SOD-323 diodes, and the SOT-323 footprint is standard for automated pick-and-place.
Infineon lists this part as Active. No last-time-buy notice has been issued, so it is safe to qualify for production BOMs. The base product number is BAV99W, and the B6327XT suffix identifies the specific reel and packaging variant. If you are cross-referencing a BAV99W from another manufacturer, the pinout and electrical specs are standard across the industry — the series-connected pair in SOT-323 is a common footprint.