# KSJD12A12L01

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

KSJD12A12L01 from KUU, in a SOD-123FL. 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 | Cathode | passive | Cathode terminal of the unidirectional TVS diode, as printed in the PINNING table for the SOD-123FL package; the datasheet gives no separate electrical limits for this pin. |
| 2 | Anode | passive | Anode terminal of the unidirectional TVS diode, as printed in the PINNING table for the SOD-123FL package; the datasheet gives no separate electrical limits for this pin. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `KSJD12A12L01`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `ksjd12a12l01-etched.step` / `ksjd12a12l01-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ksjd12a12l01.step` / `ksjd12a12l01.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KUU datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588946104692326400) (4 pp, sha256 `8dc0a4fd0a341199`, retrieved 2026-10-13, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/ksjd12a12l01-datasheet.pdf)