# SJD12A13L01

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

SJD12A13L01 from Liown, 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 (marked by the cathode band on unidirectional parts), connects to the protected line with 13V reverse stand-off, 14.4-15.9V breakdown at 1mA and 21.5V maximum clamping at 9.3A. |
| 2 | A | passive | Anode, connects to ground/return, and the unidirectional A-type device conducts forward with a maximum VF of 3.5V at 12A. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SJD12A13L01`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `sjd12a13l01-etched.step` / `sjd12a13l01-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sjd12a13l01.step` / `sjd12a13l01.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Liown datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590283535430025216) (7 pp, sha256 `2af73f617a9b968b`, 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/sjd12a13l01-datasheet.pdf)