component
MF-MSMF250
Public Made by Adomby adom
BOURNS Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MF-MSMF250
BOURNS · Resettable Fuses · 1812
MF-MSMF250 from BOURNS, in a 1812. 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 of two interchangeable, non-polarized terminals (Ni/Au pad) of the PTC resettable fuse; the datasheet's listed 250 model (MF-MSMF250/16X) is rated 16 V max, 100 A max, Ihold 2.50 A, Itrip 5.00 A at 23 °C. |
| 2 | 2 | passive | Second interchangeable, non-polarized terminal (Ni/Au pad) of the PTC resettable fuse, on the 4532 mm (1812) footprint with 3.1 mm pad spacing as drawn for Style 2. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | 1812 |
| Category | Circuit Protection |
| Pins | 2 |
CAD (KiCad official)
- Symbol:
MF-MSMF250 - Footprint:
Fuse:Fuse_1812_4532Metric - 3D model: 1812, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal 1806 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
mf-msmf250-etched.step/mf-msmf250-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mf-msmf250.step/mf-msmf250.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: BOURNS datasheet (5 pp, sha256
e0cfbb785a81edd0, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).
# MF-MSMF250
**BOURNS** · Resettable Fuses · 1812
MF-MSMF250 from BOURNS, in a 1812. 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 of two interchangeable, non-polarized terminals (Ni/Au pad) of the PTC resettable fuse; the datasheet's listed 250 model (MF-MSMF250/16X) is rated 16 V max, 100 A max, Ihold 2.50 A, Itrip 5.00 A at 23 °C. |
| 2 | 2 | passive | Second interchangeable, non-polarized terminal (Ni/Au pad) of the PTC resettable fuse, on the 4532 mm (1812) footprint with 3.1 mm pad spacing as drawn for Style 2. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | 1812 |
| Category | Circuit Protection |
| Pins | 2 |
## CAD (KiCad official)
- Symbol: `MF-MSMF250`
- Footprint: `Fuse:Fuse_1812_4532Metric`
- 3D model: 1812, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal _1806_ height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `mf-msmf250-etched.step` / `mf-msmf250-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mf-msmf250.step` / `mf-msmf250.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/8588910072294883328) (5 pp, sha256 `e0cfbb785a81edd0`, 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/mf-msmf250-datasheet.pdf)