component
JK-mSMD400L-6
Public Made by Adomby 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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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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);jk-msmd400l-6.step/jk-msmd400l-6.glbare 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, primarytwo-terminal convention(convention), consensusoff(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).
# 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](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590454791131598848) (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](docs/jk-msmd400l-6-datasheet.pdf)