3.3 V rail clamp with 0.5 pF load
The clamping voltage at peak pulse current is 7.8 V max, which keeps the protected 3.3 V logic well within its absolute-maximum rating during an ESD event. Capacitance is 0.5 pF at 1 MHz, low enough to avoid loading high-speed differential pairs such as USB 2.0, HDMI, or Gigabit Ethernet. The diode handles a peak pulse current of 1 A (8/20 µs waveform), sufficient for IEC 61000-4-2 level 4 ESD strikes.
The SOD-923 package measures 0.60 mm × 0.30 mm — the layout engineer should verify the solder-paste stencil aperture for consistent solder joint formation on this small footprint.