component
JK-SMD1210-300L-12
Public Made by Adomby adom
Jinrui Electronic Materials Co Resettable Fuses, 1210. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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| jk-smd1210-300l-12-etched.step | 16d ago |
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| package.json | 16d ago |
| page.json | 16d ago |
| README.md | 16d ago |
JK-SMD1210-300L-12
Jinrui Electronic Materials Co · Resettable Fuses · 1210
JK-SMD1210-300L-12 from Jinrui Electronic Materials Co, in a 1210. 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 non-polarized PPTC (tin-plated nickel-copper end termination, solder pad F=1.0 mm wide), in series with the protected circuit; rated 12 V max, IH 3.0 A hold, IT 6.0 A trip, IMAX 50 A. |
| 2 | 2 | passive | Second terminal of the non-polarized PPTC (tin-plated nickel-copper end termination, solder pad F=1.0 mm wide), in series with the protected circuit; rated 12 V max, IH 3.0 A hold, IT 6.0 A trip, IMAX 50 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Jinrui Electronic Materials Co |
| Package | 1210 |
| 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 device resistance | R1MAX | 0.02 | Ω | Measured one hour post reflow | 3 | ||
| Maximum continuous voltage | VMAX | 12 | V | Maximum continuous voltage device can withstand without damage at rated current | 3 | ||
| Maximum fault current | IMAX | 50 | A | Maximum fault current device can withstand without damage at rated voltage | 3 | ||
| Trip current | IT | 6 | A | Minimum current at which device goes from low to high resistance in 25℃ still air | 3 | ||
| Hold current | IH | 3 | A | Maximum current at which device will not interrupt, 25℃ still air | 3 | ||
| Maximum time to trip | Time | 2 | Sec | At 15.0 A time-to-trip current | 3 | ||
| Typical power dissipation | PD | 0.8 | W | Typical power dissipated in 25℃ still air | 3 | ||
| Passive aging resistance change | -10 | 10 | % | 85℃, 1000 hours; printed as ±10% typical | 5 | ||
| Humidity aging resistance change | -5 | 5 | % | 85℃/85%RH, 100 hours; printed as ±5% typical | 5 | ||
| Thermal shock resistance change | -30 | % | MIL-STD-202 Method 107G, +85℃/-40℃, 20 times; typical | 5 | |||
| Operating temperature range | -40 | 85 | ℃ | Operating temperature (Features) | 1 | ||
| Maximum rated voltage (feature) | 12 | V | Maximum voltage rating for the -12 variant (12V column) | 1 | |||
| Storage maximum ambient temperature | 40 | ℃ | Storage; higher storage temperatures may deform packaging | 8 | |||
| Storage maximum relative humidity | 70 | % | Storage; recommended maximum relative humidity | 8 | |||
| Peak classification reflow temperature | TP | 260 | ℃ | Pb-free reflow profile, peak temperature | 6 | ||
| Time within 5℃ of peak reflow temperature | TP | 30 | Sec | Pb-free reflow profile, time within 5℃ of actual peak temperature | 6 |
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 | 5 |
CAD (KiCad official)
- Symbol:
JK-SMD1210-300L-12 - Footprint:
Fuse:Fuse_1210_3225Metric - 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files:
jk-smd1210-300l-12-etched.step/jk-smd1210-300l-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);jk-smd1210-300l-12.step/jk-smd1210-300l-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
c9d3ae5bba577b21, retrieved 2026-10-17, 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).