80 V reverse voltage, 4 ns trr — what this dual diode does on the board
The Infineon BAV70UE6359HTMA1 is a dual switching diode with a common-cathode configuration in a PG-SC74-6 surface-mount package. It blocks up to 80 V DC reverse and recovers in 4 ns, making it a fit for high-speed switching, snubbing, and polarity protection in automotive electronics. Each diode handles 100 mA average rectified current, and the forward drop maxes at 1.2 V at 100 mA. The pair shares a cathode, so it saves board space when you need two diodes with a common return — think flyback catch diodes on relay coils or dual-series steering in a CAN bus clamp circuit.
AEC-Q101 and the 150°C junction limit
This part carries AEC-Q101 qualification, the automotive-grade stress test for discrete semiconductors. That means it has passed the production-part approval process for under-hood and chassis-domain environments — temperature cycling, HTRB, and surge beyond the standard commercial level. The junction temperature maxes at 150°C, so it can sit on a hot engine-bay PCB or near a power resistor without derating prematurely. The reverse leakage at 70 V is 150 nA typical, which is low enough to not load down a high-impedance sense line in a battery-monitoring circuit.
The BAV70UE6359HTMA1 is on a Last Buy lifecycle stage. If you have an active BOM that calls this part, the last-time-buy window is the time to secure lifetime buy quantities or qualify a drop-in alternative. The common-cathode BAV70 family is widely second-sourced — a standard part like the Nexperia BAV70,115 or the ON Semiconductor BAV70LT1G in SOT-23 is pin-compatible for many designs, though you will need to verify the package (SOT-23 vs SC-74) and the AEC-Q101 requirement. For the PG-SC74-6 footprint specifically, the Infineon BAV70UE6327HTSA1 is the same die in a different reel variant; check the last-buy status on that order code as well.