JSMD1210-450L

{
  "schema_version": 1,
  "type": "component",
  "slug": "jsmd1210-450l",
  "title": "JSMD1210-450L",
  "brief": "Shenzhen Jinkaisheng Elec Resettable Fuses, 1210. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "circuit protection",
    "jsmd1210-450l",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "JSMD1210-450L",
    "manufacturer": "Shenzhen Jinkaisheng Elec",
    "package": "1210",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "Resettable Fuses",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757195356671631360",
    "parts": {
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      "model_3d_step_plain": "jsmd1210-450l.step",
      "lbr": "jsmd1210-450l.lbr"
    },
    "distributor_links": {
      "lcsc": "C2972734"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T03:41:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
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      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "Terminal 1 of the non-polarized resettable PTC, rated 12.0 V dc max, 50.0 A max fault current, 4.5 A hold and 9.0 A trip at 25°C."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Terminal 2 of the non-polarized resettable PTC, interchangeable with terminal 1, with 0.001 Ω min and 0.013 Ω max resistance (Ri min / R1max)."
      }
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        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet drawing shows two end terminations (tin-plated Nickel-Copper pads) and does not number; The datasheet names the package as 1210 inch (3225 mm). The part number system also gives this size.",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 7,
        "cost_usd": 0.1497,
        "at": "2026-10-15T03:41:22"
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      "datasheet": {
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        "pages": 7,
        "sha256": "685a02ccb2d01eb0",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.2,
          2.5,
          1.6
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a2f37cb6e4b6f7a8f2d2ebbbf7feddc654cfba27f38f8a8a35d303017fabf2ba",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "jsmd1210-450l-etched.step",
        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "76910f2b3a2a2da95cb1f2cbb9ff1d2ca461ba3478588d8859223e62834378d2",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shenzhen Jinkaisheng Elec",
      "Package": "1210",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "685a02ccb2d01eb0d74195b84b10fcb191b4a77c020b77763175fd0951fabf93",
      "rows": [
        {
          "name": "Maximum operating voltage (rated voltage, 12 V model)",
          "symbol": "V max",
          "kind": "absolute_maximum",
          "unit": "V dc",
          "min": null,
          "typ": null,
          "max": 12,
          "conditions": "Maximum operating voltage the device can withstand without damage at rated current (Imax)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum fault current the device can withstand (12 V model)",
          "symbol": "I max",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "Maximum fault current the device can withstand without damage at rated voltage (Vmax)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Hold current at 25°C still air",
          "symbol": "I hold",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 4.5,
          "conditions": "25°C still air; maximum current the device will not trip",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Trip current at 25°C still air",
          "symbol": "I trip",
          "kind": "electrical",
          "unit": "A",
          "min": 9,
          "typ": null,
          "max": null,
          "conditions": "25°C still air; minimum current at which the device will always trip",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation in tripped state",
          "symbol": "Pd",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 1.4,
          "max": null,
          "conditions": "Tripped state, 25°C still air, at rated voltage",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum time to trip",
          "symbol": "",
          "kind": "timing",
          "unit": "s",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "At 22.5 A fault current",
          "source_page": 1,
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        },
        {
          "name": "Minimum device resistance prior to tripping",
          "symbol": "Ri min",
          "kind": "electrical",
          "unit": "Ω",
          "min": 0.001,
          "typ": null,
          "max": null,
          "conditions": "Prior to tripping at 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum device resistance measured one hour post reflow",
          "symbol": "R1max",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 0.013,
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          "source_page": 1,
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        },
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          "name": "Resistance change, passive aging",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "+85°C, 1000 hrs; ±5% typical",
          "source_page": 1,
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        {
          "name": "Resistance change, humidity aging",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "+85°C, 85% R.H., 168 hours; ±5% typical",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Resistance change, thermal shock",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -33,
          "typ": null,
          "max": 33,
          "conditions": "+85°C to -40°C, 20 times; ±33% typical",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Ambient operating temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Ambient operating conditions",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum surface temperature in tripped state",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "Device in the tripped state, 25°C still air",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Recommended hold current at ambient -40°C",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 6.66,
          "conditions": "Recommended hold current at ambient temperature -40°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Recommended hold current at ambient -20°C",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "Recommended hold current at ambient temperature -20°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Recommended hold current at ambient 0°C",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 5.22,
          "conditions": "Recommended hold current at ambient temperature 0°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Recommended hold current at ambient 25°C",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 4.5,
          "conditions": "Recommended hold current at ambient temperature 25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Recommended hold current at ambient 40°C",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 3.96,
          "conditions": "Recommended hold current at ambient temperature 40°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Recommended hold current at ambient 50°C",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
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          "max": 3.48,
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          "source_page": 2,
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        {
          "name": "Recommended hold current at ambient 60°C",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 3.17,
          "conditions": "Recommended hold current at ambient temperature 60°C",
          "source_page": 2,
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        },
        {
          "name": "Recommended hold current at ambient 70°C",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 2.76,
          "conditions": "Recommended hold current at ambient temperature 70°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Recommended hold current at ambient 85°C",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 2.16,
          "conditions": "Recommended hold current at ambient temperature 85°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 35,
          "conditions": "Storage condition",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage relative humidity",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "%RH",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "Storage condition",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_triggers": [
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  "discovery_pitch": "JSMD1210-450L (Shenzhen Jinkaisheng Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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