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JK-mSMD650L-12
Public Made by Adomby adom
Jinrui Electronic Materials Co Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownJK-mSMD650L-12
Jinrui Electronic Materials Co · Resettable Fuses · 1812
JK-mSMD650L-12 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 | First terminal of the two-terminal PPTC (tin-plated nickel-copper); rated VMAX 12.0 V, IH 6.5 A hold, IT 13.0 A trip, IMAX 50.0 A. |
| 2 | 2 | passive | Second terminal of the two-terminal PPTC (tin-plated nickel-copper), interchangeable with the first; rated VMAX 12.0 V, IH 6.5 A hold, IT 13.0 A trip, IMAX 50.0 A. |
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) | RiMIN | 0.002 | Ω | 3 | |||
| Maximum device resistance (R1MAX) | R1MAX | 0.008 | Ω | 3 | |||
| Maximum continuous voltage (VMAX) | VMAX | 12 | V | 3 | |||
| Maximum fault current (IMAX) | IMAX | 50 | A | 3 | |||
| Hold current (IH) | IH | 6.5 | A | 25℃ still air | 3 | ||
| Trip current (IT) | IT | 13 | A | 25℃ still air | 3 | ||
| Maximum time to trip | 2 | Sec | At 32.5 A trip current | 3 | |||
| Passive aging resistance change | -10 | 10 | % | 85℃, 1000 hours; ±10% typical | 5 | ||
| Humidity aging resistance change | -5 | 5 | % | 85℃/85%RH, 100 hours; ±5% typical | 5 | ||
| Operating temperature range | -40 | 85 | ℃ | 1 | |||
| Typical power dissipation (PD) | PD | 1.8 | W | In 25℃ still air | 3 | ||
| Thermal shock resistance change | -30 | % | MIL-STD-202 Method 107G, +85℃/-40℃, 20 times; -30% typical | 5 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | tin | Terminal Materials Tin-Plated Nickle-copper | 4 |
CAD (KiCad official)
- Symbol:
JK-mSMD650L-12 - 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-msmd650l-12-etched.step/jk-msmd650l-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);jk-msmd650l-12.step/jk-msmd650l-12.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 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(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).