# MF-USMF150-2

**BOURNS** · Resettable Fuses · 1210

MF-USMF150-2 from BOURNS, in a 1210. 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 1 of the non-polarized PTC resettable fuse (Ihold 1.50 A, Itrip 3.00 A at 23 °C, Vmax 6 V, Imax 40 A); the two terminals are interchangeable. |
| 2 | 2 | passive | Terminal 2 of the non-polarized PTC resettable fuse (Ihold 1.50 A, Itrip 3.00 A at 23 °C, Vmax 6 V, Imax 40 A); the two terminals are interchangeable. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | 1210 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `MF-USMF150-2`
- Footprint: `Fuse:Fuse_1210_3225Metric`
- 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files: `mf-usmf150-2-etched.step` / `mf-usmf150-2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mf-usmf150-2.step` / `mf-usmf150-2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BOURNS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589925135060283392) (6 pp, sha256 `5a6dc80aaf02d9ea`, retrieved 2026-10-08, 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/mf-usmf150-2-datasheet.pdf)