component

JK-MSMD125

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.

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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 jk-msmd125: viewers · Ray 25d ago
jk-msmd125-etched.glb jk-msmd125: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd125-etched.step jk-msmd125: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd125-hero.glb jk-msmd125: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd125-hero.overlay.json jk-msmd125: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd125.glb plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 23d ago
jk-msmd125.kicad_mod Publish 0.1.0 · Ray 25d ago
jk-msmd125.kicad_sym jk-msmd125: KiCad Device:Fuse symbol instead of a box (two-terminal passive) · Ray 11d ago
jk-msmd125.lbr jk-msmd125: KiCad Device:Fuse symbol instead of a box (two-terminal passive) · Ray 11d ago
jk-msmd125.step plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 23d ago
package.json jk-msmd125: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
page.json jk-msmd125: 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-MSMD125

Jinrui Electronic Materials Co · Resettable Fuses · 1812

JK-MSMD125 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 operating voltage (Umax) Umax 16 Vdc Maximum operating voltage at rated current (Imax) 4
Maximum fault current (Imax) Imax 100 A At rated voltage (Vmax) 4
Hold current (Ihold) Ihold 1.25 A 25°C, still air; maximum current device will not trip 4
Trip current (Itrip) Itrip 2.5 A 25°C, still air; minimum current at which device always trips 4
Maximum time to trip 0.4 Sec At 8.0 A trip current, 25°C, still air 4
Minimum resistance prior to tripping (Rimin) Rimin 0.05 Ω In still air @ 25°C 4
Maximum resistance one hour post reflow (R1max) R1max 0.2 Ω Measured one hour post reflow 4
Resistance change, passive aging -10 10 % 85℃, 1000 hours 5
Resistance change, humidity aging -5 5 % 85℃/85%RH, 1000 hours 5
Operating temperature range -40 85 °C Product feature statement for the JK-mSMD series 1
Resistance change, thermal shock -30 % MIL-STD-202 Method 107G, +85℃/-40℃, 20 times; typical change 5
Thermal derating hold current IH at maximum ambient -40°C IH 2 A Maximum ambient operating temperature -40°C 3
Thermal derating hold current IH at maximum ambient -20°C IH 1.75 A Maximum ambient operating temperature -20°C 3
Thermal derating hold current IH at maximum ambient 0°C IH 1.52 A Maximum ambient operating temperature 0°C 3
Thermal derating hold current IH at maximum ambient 25°C IH 1.25 A Maximum ambient operating temperature 25°C 3
Thermal derating hold current IH at maximum ambient 40°C IH 1 A Maximum ambient operating temperature 40°C 3
Thermal derating hold current IH at maximum ambient 50°C IH 0.95 A Maximum ambient operating temperature 50°C 3
Thermal derating hold current IH at maximum ambient 60°C IH 0.9 A Maximum ambient operating temperature 60°C 3
Thermal derating hold current IH at maximum ambient 70°C IH 0.75 A Maximum ambient operating temperature 70°C 3
Thermal derating hold current IH at maximum ambient 85°C IH 0.53 A Maximum ambient operating temperature 85°C 3

CAD (KiCad official)

  • Symbol: JK-MSMD125
  • 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-msmd125-etched.step / jk-msmd125-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); jk-msmd125.step / jk-msmd125.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 8d950f09d4bc30e4, 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