Two Schottkys in a tiny SOT-343
The Infineon BAS70-07W packs two independent Schottky diodes into a single SC-82A / SOT-343 surface-mount package. Each diode is rated for 70 V reverse voltage and 70 mA average rectified current, with a forward voltage drop of 1 V at 15 mA. The 100 ps reverse recovery time is what you expect from a Schottky — no stored charge, clean switching. This is the dual version of the single BAS70, giving you two diodes in the footprint of one small package, handy for clamping, steering, or OR-ing in tight layouts.
70 V blocking, 100 nA leakage — the numbers that matter
The 70 V reverse voltage rating covers most low-voltage supply rails and signal lines — think 12 V, 24 V, or 48 V buses with margin. Reverse leakage is 100 nA at 50 V, which is low enough for high-impedance analog nodes or battery-powered circuits where every microamp counts. The forward drop of 1 V at 15 mA is typical for a small-signal Schottky; if you need lower Vf at higher current, you would step up to a larger die like the BAT54 series. The 100 ps trr means it handles fast edges without ringing — useful for RF detector circuits or high-speed logic protection.
Active production, no end-of-life worry
Infineon lists the BAS70-07W as Active.
Field-swap note: orientation matters
The SC-82A / SOT-343 package is small — about 2.0 mm x 2.1 mm — and the pinout is not symmetric. If you are swapping this in the field without a microscope, get good light and a steady hand. The dual configuration means two independent diodes share the common cathode or anode arrangement depending on the variant; the BAS70-07W uses two independent diodes with no internal connection between the cathodes or anodes, so verify the board layout before soldering.