# SMFJ6.0A

**RUILON Shenzhen Ruilongyuan Elec** · ESD And Surge Protection (TVS/ESD) · SOD-123

SMFJ6.0A from RUILON Shenzhen Ruilongyuan Elec, 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 | Cathode | passive | Cathode is the banded terminal on unidirectional SMFJ parts such as SMFJ6.0A, marked by the cathode band on the package. |
| 2 | Anode | passive | Anode is the non-banded terminal of the unidirectional SMFJ6.0A, and the datasheet gives the forward voltage drop for unidirectional devices (Fig. 3 / I-V curve section). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RUILON Shenzhen Ruilongyuan Elec |
| Package | SOD-123 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `SMFJ6.0A`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `smfj6-0a-etched.step` / `smfj6-0a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smfj6-0a.step` / `smfj6-0a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RUILON Shenzhen Ruilongyuan Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586177437385940992) (6 pp, sha256 `6f8d77006eb56f37`, retrieved 2026-10-09, 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/smfj6-0a-datasheet.pdf)