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JK-mSMD400L-6

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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
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docs Publish 0.1.0 · Ray 25d ago
viewers jk-msmd400l-6: viewers · Ray 25d ago
jk-msmd400l-6-etched.glb jk-msmd400l-6: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd400l-6-etched.step jk-msmd400l-6: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd400l-6-hero.glb jk-msmd400l-6: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd400l-6-hero.overlay.json jk-msmd400l-6: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
jk-msmd400l-6.glb plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 23d ago
jk-msmd400l-6.kicad_mod Publish 0.1.0 · Ray 25d ago
jk-msmd400l-6.kicad_sym jk-msmd400l-6: KiCad Device:Fuse symbol instead of a box (two-terminal passive) · Ray 11d ago
jk-msmd400l-6.lbr jk-msmd400l-6: KiCad Device:Fuse symbol instead of a box (two-terminal passive) · Ray 11d ago
jk-msmd400l-6.step plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 23d ago
package.json jk-msmd400l-6: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
page.json jk-msmd400l-6: 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-mSMD400L-6

Jinrui Electronic Materials Co · Resettable Fuses · 1812

JK-mSMD400L-6 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
Initial resistance (minimum) RiMIN 0.003 Ω In still air at 25℃ 3
Maximum resistance after reflow R1MAX 0.018 Ω Measured one hour post reflow 3
Maximum time-to-trip 2 Sec Specified current 20.0 A, VMAX, 25℃ 3
Maximum continuous voltage (VMAX, rated voltage 6 V variant) VMAX 6 V 3
Maximum fault current (IMAX) IMAX 50 A 3
Passive aging resistance change -10 10 % 85℃, 1000 hours 5
Humidity aging resistance change -5 5 % 85℃/85%RH, 100 hours 5
Operating temperature range -40 85 ℃ 1
Hold current (IH), 6 V variant IH 4 A 30 min at IH, 25℃, no trip 3
Trip current (IT) IT 8 A 25℃ still air 3
Typical power dissipation (PD) PD 1.8 W 25℃ still air 3
Hold current derating at -40℃ ambient IH 5.8 A Thermal derating chart, ambient -40℃ 3
Hold current derating at 85℃ ambient IH 2 A Thermal derating chart, ambient 85℃ 3
Thermal shock resistance change -30 % MIL-STD-202 Method 107G, +85℃/-40℃, 20 times 5

CAD (KiCad official)

  • Symbol: JK-mSMD400L-6
  • 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-msmd400l-6-etched.step / jk-msmd400l-6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); jk-msmd400l-6.step / jk-msmd400l-6.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 e67a941ead1377dd, retrieved 2026-10-14, 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