onsemi SMF12AT1, Zener TVS diode, 200W peak pulse power, 12V reverse standoff, 19.9V clamping, unidirectional, SOD-123FL surface-mount package
| Parameter | Value |
|---|---|
| Type | Zener |
| Mounting | Surface Mount |
| Voltage - breakdown | 13.3V |
| Voltage - clamping (Max) @ ipp | 19.9V |
| Voltage - reverse standoff | 12V |
| Current - peak pulse (10/1000μs) | 10.1A |
| Power - peak pulse | 200W |
| Power line protection | No |
| Operating temperature | -55°C~150°C(TJ) |
| Package | Tape & Reel (TR) |
| Applications | General Purpose |
| Case | SOD-123F |
| Unidirectional channels | 1 |
This means the diode will begin conducting when the rail exceeds 13.3V breakdown and will clamp transients to under 20V, protecting downstream components on a 12V supply bus.
The SOD-123FL package is a surface-mount, low-profile footprint suitable for dense PCB layouts; the 0.50 mm pitch and small body require standard reflow soldering with no via-in-pad.
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