# FEMTOSMDC005F-2

**Littelfuse** · Resettable Fuses · 0603

FEMTOSMDC005F-2 from Littelfuse, 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 | One tin-plated termination of the resettable PTC fuse, non-polarized and interchangeable with the other terminal; rated 15.0 VDC maximum, 40 A short-circuit current, 0.05 A hold and 0.15 A trip at 25 °C. |
| 2 | 2 | passive | The other tin-plated termination of the resettable PTC fuse, non-polarized and interchangeable with the other terminal; rated 15.0 VDC maximum, 40 A short-circuit current, 0.05 A hold and 0.15 A trip at 25 °C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | 0603 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `FEMTOSMDC005F-2`
- Footprint: `Fuse:Fuse_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `femtosmdc005f-2-etched.step` / `femtosmdc005f-2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `femtosmdc005f-2.step` / `femtosmdc005f-2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838191789846528) (2 pp, sha256 `d8ef45e91e11163a`, 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/femtosmdc005f-2-datasheet.pdf)