component

FSMD300R

Public Made by Adom

by adom

Fuzetec Tech Resettable Fuses, 1812. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 25d ago
viewers fsmd300r: viewers · Ray 25d ago
fsmd300r-etched.glb fsmd300r: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
fsmd300r-etched.step fsmd300r: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
fsmd300r-hero.glb fsmd300r: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
fsmd300r-hero.overlay.json fsmd300r: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
fsmd300r.glb plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 23d ago
fsmd300r.kicad_mod Publish 0.1.0 · Ray 25d ago
fsmd300r.kicad_sym fsmd300r: KiCad Device:Fuse symbol instead of a box (two-terminal passive) · Ray 11d ago
fsmd300r.lbr fsmd300r: KiCad Device:Fuse symbol instead of a box (two-terminal passive) · Ray 11d ago
fsmd300r.step plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 23d ago
package.json fsmd300r: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
page.json fsmd300r: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
README.md Publish 0.1.0 · Ray 25d ago

FSMD300R

Fuzetec Tech · Resettable Fuses · 1812

FSMD300R from Fuzetec Tech, 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 Terminal 1 of an unpolarised fuse; either orientation.
2 2 passive Terminal 2 of an unpolarised fuse; either orientation.

Key specifications

Parameter Value
Manufacturer Fuzetec Tech
Package 1812
Category Circuit Protection
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Trip current (minimum current that always trips at 23℃ still air) IT 5 A 23℃ still air 2
Minimum device resistance prior to tripping RMIN 0.012 Ohms 23℃, prior to tripping 2
Maximum device resistance measured 1 hour after tripping or after reflow R1MAX 0.04 Ohms 23℃, 1 hour after tripping or reflow soldering at 260℃ for 20 seconds 2
Maximum voltage device can withstand without damage at rated current VMAX 6 VDC at rated current IMAX 2
Maximum fault current device can withstand without damage at rated voltage IMAX 100 A at rated voltage VMAX 2
Maximum current at which device will not trip (hold current) IH 3 A 23℃ still air 2
Max time to trip 4 Sec at 8.0 A 2
Typical power dissipated in tripped state Pd 1 W tripped state, 23℃ still air 2
Operating temperature range -40 85 ℃ 1

CAD (KiCad official)

  • Symbol: FSMD300R
  • 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: fsmd300r-etched.step / fsmd300r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fsmd300r.step / fsmd300r.glb are the bare package body.

Provenance

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

  • Datasheet: Fuzetec Tech datasheet (5 pp, sha256 6c1f91fc21044331, retrieved 2026-10-15, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary two-terminal convention (convention), consensus off (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