# MF-USML700

**BOURNS** · Resettable Fuses · 1210

MF-USML700 from BOURNS, in a 1210. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1 | passive | Terminal 1 of the polymer PTC resettable fuse. ENIG-plated SMD terminal; non-polarized, interchangeable with terminal 2. In-circuit resistance R_min = 0.001 Ω, R1_max = 0.008 Ω at 23 °C, rated 6 V / 50 A max. |
| 2 | 2 | passive | Terminal 2 of the polymer PTC resettable fuse. ENIG-plated SMD terminal; non-polarized, interchangeable with terminal 1. In-circuit resistance R_min = 0.001 Ω, R1_max = 0.008 Ω at 23 °C, rated 6 V / 50 A max. |

## Key specifications

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

## Ordering variants

Same part, different packaging or reel option.

- `MF-USML700/6-2`

## CAD (KiCad official)

- Symbol: `MF-USML700`
- Footprint: `Resistor_SMD:R_1210_3225Metric`
- 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files: `mf-usml700-etched.step` / `mf-usml700-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mf-usml700.step` / `mf-usml700.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/8588922035955781632) (None pp, sha256 `86b60882e1aa972e`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/mf-usml700-datasheet.pdf)