4 ns trr — why this diode is for fast switching, not rectification
The Infineon BAV99SH6433XTMA1 is a dual series switching diode in a PG-SOT363-PO surface-mount package. Each of the two series-connected diode pairs handles 200 mA average rectified current (Io) and blocks 80 V reverse voltage (Vr), with forward voltage drop of 1.25 V at 150 mA. The 150 nA leakage at 70 V is tight enough for battery-powered sense circuits that cannot tolerate bleed current.
That means Infineon has announced an end-of-life window, and once the final production run is exhausted, the BAV99SH6433XTMA1 will no longer be manufactured. For a new design, this is a red flag — you want an active part. For a legacy BOM line that already uses it, the procurement decision is about securing enough inventory to cover the remaining production run or qualifying a replacement before the last-time-buy deadline. No firm stock figures or lead-time numbers are published here because the supply picture changes weekly on a phase-out line — submit an RFQ for the real picture.
80 V blocking and 200 mA — where the margin matters
The 80 V reverse voltage rating gives comfortable headroom above 48 V telecom rails and 24 V industrial supplies, so the diode stays in avalanche-safe territory even with a 20 % transient overvoltage. The 200 mA average current per diode is modest — this is a signal diode, sized for logic-level loads, relay coil snubbing, and low-power flyback clamping, not for a motor-drive bootstrap supply. The 150 nA leakage at 70 V is low enough that it will not pull down a high-impedance ADC input or a weak pull-up on a slow I2C line.