JK-mSMD300

{
  "schema_version": 1,
  "type": "component",
  "slug": "jk-msmd300",
  "title": "JK-mSMD300",
  "brief": "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.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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    "mpn": "JK-mSMD300",
    "manufacturer": "Jinrui Electronic Materials Co",
    "package": "1812",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "Resettable Fuses",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588919268368912384",
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      "footprint": "jk-msmd300.kicad_mod",
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      "lbr": "jk-msmd300.lbr"
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    "distributor_links": {
      "lcsc": "C2830277"
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "Terminal 1 of an unpolarised fuse; either orientation."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Terminal 2 of an unpolarised fuse; either orientation."
      }
    ],
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      "factory_chain": {
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        "primary_model": "two-terminal convention",
        "primary_mode": "convention",
        "consensus_model": null,
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "cost_usd": 0.0019,
        "at": "2026-10-15T12:15:22"
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        "pages": 8,
        "sha256": "f738482242d5dcb4",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9fe93ca74d74feea88ca1ef5fb76d5ac1074d8889d758a4418277856e30c1d02",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "jk-msmd300-etched.step",
        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "dff9568a3fc4275f4551f02a90c87ac6bb6d45a0ea6612732885da31168f7615",
        "checked": "2026-10-16",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Jinrui Electronic Materials Co",
      "Package": "1812",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "characteristics": {
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      "source": "datasheet",
      "datasheet_sha256": "f738482242d5dcb4ea37f3ce1bd6011cacd8907973a8b8ec56a46367e6737732",
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          "name": "Maximum voltage rating",
          "symbol": "Vmax",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum fault current",
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          "conditions": "",
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        {
          "name": "Hold current",
          "symbol": "Ihold",
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          "max": 3,
          "conditions": "@25°C",
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        },
        {
          "name": "Trip current",
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          "typ": null,
          "max": null,
          "conditions": "@25°C",
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          "source": "datasheet"
        },
        {
          "name": "Time to trip",
          "symbol": "",
          "kind": "electrical",
          "unit": "s",
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          "typ": null,
          "max": 4,
          "conditions": "at 8.0 A",
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        {
          "name": "Minimum resistance prior to tripping",
          "symbol": "Rimin",
          "kind": "electrical",
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          "typ": null,
          "max": null,
          "conditions": "R25, 25°C",
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        },
        {
          "name": "Maximum resistance one hour post reflow",
          "symbol": "R1max",
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          "max": 0.04,
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          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Passive aging resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -10,
          "typ": null,
          "max": 10,
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          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Humidity aging resistance change",
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        {
          "name": "Thermal shock resistance change",
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          "kind": "tolerance",
          "unit": "%",
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          "max": null,
          "conditions": "MIL-STD-202 Method 107G, +85°C/-40°C, 20 times",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "JK-mSMD300 (Jinrui Electronic Materials Co) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}