main
Ray Set visibility: public eecf275 3d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "1812l260thdr",
  "title": "1812L260THDR",
  "brief": "Littelfuse 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",
  "tags": [
    "component",
    "circuit protection",
    "1812l260thdr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "1812L260THDR",
    "manufacturer": "Littelfuse",
    "package": "1812",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "Resettable Fuses",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588909265632808961",
    "parts": {
      "symbol": "1812l260thdr.kicad_sym",
      "footprint": "1812l260thdr.kicad_mod",
      "model_3d": "1812l260thdr-hero.glb",
      "model_3d_plain": "1812l260thdr-etched.glb",
      "model_3d_step": "1812l260thdr-etched.step",
      "model_3d_step_plain": "1812l260thdr.step",
      "lbr": "1812l260thdr.lbr"
    },
    "distributor_links": {
      "lcsc": "C151172",
      "mouser": "576-1812L260THDR"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T09:36:58Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "error"
      },
      "mouser": {
        "pn": "576-1812L260THDR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "First terminal of the two-terminal resettable PTC (solder-plated copper end termination, non-polarized); 1812L260TH is rated 2.60 A hold, 5.20 A trip, 8 Vdc max, 100 A max fault current."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Second terminal of the two-terminal resettable PTC (solder-plated copper end termination, non-polarized); series-connected with terminal 1 in the protected current path."
      }
    ],
    "provenance": {
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      "factory_chain": {
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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 a two-terminal, non-polarized SMD device with no pin numbers printed. Pi",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 7,
        "cost_usd": 0.2185,
        "at": "2026-10-19T09:33:30"
      },
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        "pages": 7,
        "sha256": "6208de21968a51c9",
        "source_tier": "lcsc"
      },
      "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": [
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          3.22,
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "71ff8d0f608d0f54ad41400bd891ce4b650aa4e9ee799fd859205e26c1b0093a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "1812l260thdr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2c7d0df624df76b8ff4c89cc5073bccd482c0533f78be03007a499786ac9974e",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Littelfuse",
      "Package": "1812",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "appearance": {
      "contacts": {
        "quote": "Terminal Material Solder-Plated Copper (Solder Material:",
        "page": 3,
        "doc": "ds.pdf",
        "material": "Copper"
      },
      "version": 1,
      "datasheet_sha256": "6208de21968a51c9eb4783c0fd44d08bd427d77e585e40bfa764dd3bcec59d92"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "6208de21968a51c9eb4783c0fd44d08bd427d77e585e40bfa764dd3bcec59d92",
      "rows": [
        {
          "name": "Minimum resistance (initial, un-soldered)",
          "symbol": "R min",
          "kind": "electrical",
          "unit": "Ω",
          "min": 0.015,
          "typ": null,
          "max": null,
          "conditions": "Initial (un-soldered) state",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum resistance after trip or reflow",
          "symbol": "R 1max",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 0.047,
          "conditions": "20°C, measured one hour after tripping or reflow soldering of 260°C for 20 sec",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum time to trip",
          "symbol": "Time",
          "kind": "timing",
          "unit": "s",
          "min": null,
          "typ": null,
          "max": 2.5,
          "conditions": "At 8.00 A current",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum voltage (V max)",
          "symbol": "V max",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "Maximum voltage device can withstand without damage at rated current (I max)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum fault current (I max)",
          "symbol": "I max",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "Maximum fault current device can withstand without damage at rated voltage (Vmax)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Max device surface temperature in tripped state",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "In tripped state",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating/Storage temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Operating/Storage Temp.",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Passive aging resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Passive aging +85°C, 1000 hours; typical resistance change",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Humidity aging resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Humidity aging +85°C, 85% R.H., 1000 hours; typical resistance change",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal shock resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -30,
          "typ": null,
          "max": null,
          "conditions": "MIL-STD-202 Method 107, +85°C/-40°C 20 times; typical resistance change",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum ramp-up rate (TS max to TP)",
          "symbol": "",
          "kind": "thermal",
          "unit": "°C/second",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "Pb-free reflow profile, average ramp-up",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Maximum ramp-down rate",
          "symbol": "",
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          "max": 6,
          "conditions": "Pb-free reflow profile",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Time 25°C to peak temperature",
          "symbol": "",
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          "unit": "minutes",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "Pb-free reflow profile, time from 25°C to peak temperature (TP)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Peak classification temperature (reflow)",
          "symbol": "TP",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "Pb-free reflow; printed as 260 +0/-5 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power dissipated in tripped state",
          "symbol": "P d",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "Tripped state at 20°C still air",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Hold current",
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          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 2.6,
          "max": null,
          "conditions": "20°C still air; maximum current device will pass without tripping",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Trip current",
          "symbol": "I trip",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 5.2,
          "max": null,
          "conditions": "20°C still air; minimum current at which device will trip",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Hold current at ambient",
          "symbol": "I hold",
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          "unit": "A",
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          "typ": 3.4,
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          "conditions": "Ambient -40°C",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Hold current at ambient",
          "symbol": "I hold",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 3.16,
          "max": null,
          "conditions": "Ambient -20°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Hold current at ambient",
          "symbol": "I hold",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "Ambient 0°C",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Hold current at ambient",
          "symbol": "I hold",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 2.6,
          "max": null,
          "conditions": "Ambient 20°C",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Hold current at ambient",
          "symbol": "I hold",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 2.3,
          "max": null,
          "conditions": "Ambient 40°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Hold current at ambient",
          "symbol": "I hold",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 2.15,
          "max": null,
          "conditions": "Ambient 50°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Hold current at ambient",
          "symbol": "I hold",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "Ambient 60°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Hold current at ambient",
          "symbol": "I hold",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1.85,
          "max": null,
          "conditions": "Ambient 70°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Hold current at ambient",
          "symbol": "I hold",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1.63,
          "max": null,
          "conditions": "Ambient 85°C",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "1812l260thdr"
  ],
  "discovery_pitch": "1812L260THDR (Littelfuse) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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  "visibility": {
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  }
}