# PTVS12VS1UR

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

PTVS12VS1UR from FUXINSEMI, 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 unidirectional TVS diode, marked by the cathode band; connects to the protected line (VRWM 12.0 V, breakdown 13.30-14.70 V at 1 mA for PTVS12VS1UR). |
| 2 | A | passive | Anode of the unidirectional TVS diode, typically connected to ground (400 W peak pulse power at 10x1000us). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `PTVS12VS1UR`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `ptvs12vs1ur-etched.step` / `ptvs12vs1ur-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ptvs12vs1ur.step` / `ptvs12vs1ur.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FUXINSEMI datasheet](docs/ptvs12vs1ur-datasheet.pdf) (6 pp, sha256 `9ead6846412eeb47`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/ptvs12vs1ur-datasheet.pdf)