# JK-SMD0603-050

**Jinrui Electronic Materials Co** · Resettable Fuses · 0603

JK-SMD0603-050 from Jinrui Electronic Materials Co, in a 0603. 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 | Terminal pad of the non-polarized PPTC (1.0 mm x 1.0 mm recommended land); device is rated 6.0 Vdc max, 40 A max, 0.50 A hold and 1.00 A trip at 25 °C. |
| 2 | 2 | passive | Second terminal pad of the non-polarized PPTC, interchangeable with pad 1, with 0.100 to 0.800 Ω initial resistance between the pads and 0.8 mm recommended pad gap. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Jinrui Electronic Materials Co |
| Package | 0603 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `JK-SMD0603-050`
- Footprint: `Fuse:Fuse_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `jk-smd0603-050-etched.step` / `jk-smd0603-050-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jk-smd0603-050.step` / `jk-smd0603-050.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Jinrui Electronic Materials Co datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835695696351232) (3 pp, sha256 `70dc5ad481404630`, 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-smd0603-050-datasheet.pdf)