# JK-nSMD050SF

**Shenzhen Jinkaisheng Elec** · Resettable Fuses · 1206

JK-nSMD050SF from Shenzhen Jinkaisheng Elec, in a 1206. 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 | 1 | passive | First terminal of the non-polar resettable PTC fuse (Ihold 0.50 A, Itrip 1.00 A, Vmax 6.0 Vdc, Imax 100 A), tin-plated nickel-copper pad, recommended land 1.0 x 1.9 mm. |
| 2 | 2 | passive | Second terminal of the non-polar resettable PTC fuse (Ihold 0.50 A, Itrip 1.00 A, Vmax 6.0 Vdc, Imax 100 A), interchangeable with terminal 1, land spacing 2.0 mm. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen Jinkaisheng Elec |
| Package | 1206 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `JK-nSMD050SF`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `jk-nsmd050sf-etched.step` / `jk-nsmd050sf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jk-nsmd050sf.step` / `jk-nsmd050sf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen Jinkaisheng Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588894057313132544) (6 pp, sha256 `cffac96ad3619f6f`, 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/jk-nsmd050sf-datasheet.pdf)