# P4SOD5.0AX

**WeEn Semiconductors** · ESD And Surge Protection (TVS/ESD) · SOD-123

P4SOD5.0AX from WeEn Semiconductors, in a SOD-123. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode of the uni-directional TVS, marked by the cathode band; connect to the protected line (positive side), where the part clamps at VC 9.2 V max at 43.5 A Ipp, VR 5 V. |
| 2 | A | passive | Anode of the uni-directional TVS; connect to ground or the return side of the protected line, with 400 W peak pulse power at 10/1000 µs. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | WeEn Semiconductors |
| Package | SOD-123 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `P4SOD5.0AX`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `p4sod5-0ax-etched.step` / `p4sod5-0ax-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `p4sod5-0ax.step` / `p4sod5-0ax.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [WeEn Semiconductors datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603058519986233344) (7 pp, sha256 `46654489b3f90ac2`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/p4sod5-0ax-datasheet.pdf)