component

JK-mSMD300

Public Made by Adom

by adom

Jinrui Electronic Materials Co 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.

componentcircuit protectionjk-msmd300factory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
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 jk-msmd300: viewers · Ray 25d ago
jk-msmd300-etched.glb jk-msmd300: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd300-etched.step jk-msmd300: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd300-hero.glb jk-msmd300: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd300-hero.overlay.json jk-msmd300: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd300.glb plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 23d ago
jk-msmd300.kicad_mod Publish 0.1.0 · Ray 25d ago
jk-msmd300.kicad_sym jk-msmd300: KiCad Device:Fuse symbol instead of a box (two-terminal passive) · Ray 11d ago
jk-msmd300.lbr jk-msmd300: KiCad Device:Fuse symbol instead of a box (two-terminal passive) · Ray 11d ago
jk-msmd300.step plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 23d ago
package.json jk-msmd300: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
page.json jk-msmd300: 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

JK-mSMD300

Jinrui Electronic Materials Co · Resettable Fuses · 1812

JK-mSMD300 from Jinrui Electronic Materials Co, 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 Jinrui Electronic Materials Co
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
Maximum voltage rating Vmax 8 Vdc 4
Maximum fault current Imax 100 A 4
Hold current Ihold 3 A @25°C 4
Trip current Itrip 5 A @25°C 4
Time to trip 4 s at 8.0 A 4
Minimum resistance prior to tripping Rimin 0.012 Ω R25, 25°C 4
Maximum resistance one hour post reflow R1max 0.04 Ω 1 hour post reflow 4
Operating temperature -40 85 °C 1
Passive aging resistance change -10 10 % 85°C, 1000 hours 5
Humidity aging resistance change -5 5 % 85°C/85%RH, 1000 hours 5
Thermal shock resistance change -30 % MIL-STD-202 Method 107G, +85°C/-40°C, 20 times 5

CAD (KiCad official)

  • Symbol: JK-mSMD300
  • 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: jk-msmd300-etched.step / jk-msmd300-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); jk-msmd300.step / jk-msmd300.glb are the bare package body.

Provenance

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

  • Datasheet: Jinrui Electronic Materials Co datasheet (8 pp, sha256 f738482242d5dcb4, 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