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MF-MSMF250

Public Made by Adom

by adom

BOURNS Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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docs Publish 0.1.0 · Ray 24d ago
viewers mf-msmf250: viewers · Ray 24d ago
mf-msmf250-etched.glb mf-msmf250: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
mf-msmf250-etched.step mf-msmf250: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
mf-msmf250-hero.glb mf-msmf250: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
mf-msmf250-hero.overlay.json mf-msmf250: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
mf-msmf250.glb plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 17d ago
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mf-msmf250.step plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 17d ago
package.json mf-msmf250: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
page.json mf-msmf250: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
README.md Publish 0.1.0 · Ray 24d ago

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 (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