JK-mSMD125-8

{
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  "slug": "jk-msmd125-8",
  "title": "JK-mSMD125-8",
  "brief": "Jinrui Electronic Materials Co Resettable Fuses, 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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    "mpn": "JK-mSMD125-8",
    "manufacturer": "Jinrui Electronic Materials Co",
    "package": "1812",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "Resettable Fuses",
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      "lbr": "jk-msmd125-8.lbr"
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    "distributor_links": {
      "lcsc": "C2988323"
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "First terminal pad of the non-polarized PPTC resettable fuse (Ihold 1.25A, Itrip 2.50A at 25°C, Vmax 8.0Vdc, Imax 100A); the datasheet does not label it."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Second terminal pad of the non-polarized PPTC resettable fuse, tin-plated nickel-copper, recommended pad 1.78±0.1mm x 3.2±0.1mm with 3.2±0.1mm pad spacing."
      }
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        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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          "vision extraction: provenance cannot be text-verified; needs consensus"
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        "cost_usd": 0.1867,
        "at": "2026-10-18T13:00:50"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4721e69247051d4252c1ef289afb46f86d51d4745a8ef28010e602cd204f779f",
        "checked": "2026-10-18",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Jinrui Electronic Materials Co",
      "Package": "1812",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "appearance": {
      "contacts": {
        "quote": "Terminal pad materials :Tin-Plated Nickle-copper",
        "page": 1,
        "doc": "ds.pdf",
        "material": "copper",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "8d950f09d4bc30e4e93c9ba9d78a6c14d8a02eeba70576b5167dadabd020fc18"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
        {
          "name": "Maximum operating voltage (Umax)",
          "symbol": "Umax",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "Maximum operating voltage the device can withstand without damage at rated current (Imax)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum fault current (Imax)",
          "symbol": "Imax",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "Maximum fault current withstood without damage at rated voltage (Vmax)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Time to trip",
          "symbol": "",
          "kind": "timing",
          "unit": "s",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "Specified current 8.0 A, Vmax, 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum resistance prior to tripping (Rimin)",
          "symbol": "Rimin",
          "kind": "electrical",
          "unit": "Ω",
          "min": 0.05,
          "typ": null,
          "max": null,
          "conditions": "In still air @ 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum resistance one hour post reflow (R1max)",
          "symbol": "R1max",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "Measured one hour post reflow",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Resistance change, passive aging",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "85°C, 1000 hours",
          "source_page": 5,
          "source": "datasheet"
        },
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          "name": "Resistance change, humidity aging",
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          "min": null,
          "typ": -30,
          "max": null,
          "conditions": "MIL-STD-202 Method 107G, +85°C/-40°C, 20 times; typical resistance change",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Operating temperature range",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage ambient temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 38,
          "conditions": "Storage; maximum ambient temperature shall not exceed 38°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Storage relative humidity",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "%RH",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "Storage; maximum recommended relative humidity",
          "source_page": 8,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "JK-mSMD125-8 (Jinrui Electronic Materials Co) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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