SMD1812-125

{
  "schema_version": 1,
  "type": "component",
  "slug": "smd1812-125",
  "title": "SMD1812-125",
  "brief": "Shenzhen Jinkaisheng Elec 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",
  "tags": [
    "component",
    "circuit protection",
    "smd1812-125",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SMD1812-125",
    "manufacturer": "Shenzhen Jinkaisheng Elec",
    "package": "1812",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "Resettable Fuses",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590184395979464704",
    "parts": {
      "symbol": "smd1812-125.kicad_sym",
      "footprint": "smd1812-125.kicad_mod",
      "model_3d": "smd1812-125-hero.glb",
      "model_3d_plain": "smd1812-125-etched.glb",
      "model_3d_step": "smd1812-125-etched.step",
      "model_3d_step_plain": "smd1812-125.step",
      "lbr": "smd1812-125.lbr"
    },
    "distributor_links": {
      "lcsc": "C2846898"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T05:35:17Z",
      "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."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "extractor": "extract_pins",
        "primary_model": "two-terminal convention",
        "primary_mode": "convention",
        "consensus_model": null,
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
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        "pages_sent": 8,
        "cost_usd": 0.072,
        "at": "2026-10-19T05:31:50"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590184395979464704",
        "pages": 8,
        "sha256": "721274444699c551",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "units": "mm",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
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        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "fd6043662d27287e615171d8d95910a10a8700644c02b3f8a316c66353291871",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shenzhen Jinkaisheng Elec",
      "Package": "1812",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "appearance": {
      "contacts": {
        "quote": "Terminal pad materials：Tin-plated Nickel-Copper",
        "page": 5,
        "doc": "ds.pdf",
        "material": "Copper",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "721274444699c551c937e4553491a1760fdce97cdff8fa462ad46f9502659bed"
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    "characteristics": {
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          "unit": "V dc",
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          "typ": null,
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        {
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          "symbol": "Ihold",
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          "conditions": "Maximum current device will not trip in 25°C still air",
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        },
        {
          "name": "Trip current (Itrip)",
          "symbol": "Itrip",
          "kind": "electrical",
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          "name": "Resistance prior to tripping (Ri)",
          "symbol": "Ri",
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        {
          "name": "Power dissipation in tripped state (Pd)",
          "symbol": "Pd",
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          "unit": "W",
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        {
          "name": "Time to trip",
          "symbol": "",
          "kind": "timing",
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          "name": "Passive aging resistance change",
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          "name": "Thermal shock resistance change",
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        },
        {
          "name": "Ambient operating temperature",
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        },
        {
          "name": "Maximum surface temperature in tripped state",
          "symbol": "",
          "kind": "thermal",
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          "min": null,
          "typ": null,
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          "name": "Recommended hold current at -40°C ambient",
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          "name": "Recommended hold current at -20°C ambient",
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        {
          "name": "Recommended hold current at 0°C ambient",
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          "name": "Recommended hold current at 25°C ambient",
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          "kind": "recommended_operating",
          "unit": "A",
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          "typ": 1.25,
          "max": null,
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        {
          "name": "Recommended hold current at 40°C ambient",
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          "kind": "recommended_operating",
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          "typ": 1,
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          "name": "Recommended hold current at 50°C ambient",
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          "kind": "recommended_operating",
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          "name": "Recommended hold current at 60°C ambient",
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        {
          "name": "Recommended hold current at 70°C ambient",
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          "max": null,
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        {
          "name": "Recommended hold current at 85°C ambient",
          "symbol": "Ihold",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
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          "max": null,
          "conditions": "Recommended hold current at ambient 85°C (derating table)",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 35,
          "conditions": "Storage condition; devices may not meet performance if exceeded",
          "source_page": 4,
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        },
        {
          "name": "Storage humidity",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "%RH",
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          "conditions": "Storage condition, ≤70% RH",
          "source_page": 4,
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        {
          "name": "Peak reflow temperature (Tp)",
          "symbol": "Tp",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
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          "max": 260,
          "conditions": "Pb-free reflow profile, peak temperature",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Average ramp-up rate",
          "symbol": "",
          "kind": "timing",
          "unit": "°C/second",
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          "conditions": "Average ramp-up rate, Ts max to Tp",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Ramp-down rate",
          "symbol": "",
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          "unit": "°C/second",
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          "source": "datasheet"
        },
        {
          "name": "Time 25°C to peak temperature",
          "symbol": "",
          "kind": "timing",
          "unit": "minutes",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "Time from 25°C to peak temperature",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum recommended paste thickness",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "mm",
          "min": null,
          "typ": null,
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          "conditions": "Recommended maximum paste thickness",
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      ]
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
    "smd1812-125"
  ],
  "discovery_pitch": "SMD1812-125 (Shenzhen Jinkaisheng Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}