main
Ray Set visibility: public 6b558ec 4d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "1206l400slwr",
  "title": "1206L400SLWR",
  "brief": "Littelfuse Resettable Fuses, 1206. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.",
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    "subcategory": "Resettable Fuses",
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      "source": "Component Ocean /api/assign-pns",
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      "mouser": {
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        "name": "1",
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      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Terminal 2 of an unpolarised fuse; either orientation."
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        "primary_model": "two-terminal convention",
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        "consensus_model": null,
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "at": "2026-10-17T20:52:01"
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        "sha256": "8812672c2cc1e8cf",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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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": "5e6dcbe286696143d35a8ea37d91eef4b54ff3d1bd7c2c2b4dedda83d3f8e203",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "1206l400slwr-etched.step",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Littelfuse",
      "Package": "1206",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "appearance": {
      "contacts": {
        "quote": "Terminal Material Solder-Plated Copper",
        "page": 6,
        "doc": "ds.pdf",
        "material": "Copper"
      },
      "version": 1,
      "datasheet_sha256": "8812672c2cc1e8cf11f5306b27439d07b264c0639bd0139a6835a71c79f7517a"
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    "characteristics": {
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      "source": "datasheet",
      "datasheet_sha256": "8812672c2cc1e8cf11f5306b27439d07b264c0639bd0139a6835a71c79f7517a",
      "rows": [
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          "name": "Minimum resistance (Rmin)",
          "symbol": "Rmin",
          "kind": "electrical",
          "unit": "Ω",
          "min": 0.001,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Maximum resistance after trip (R1max)",
          "symbol": "R1max",
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        {
          "name": "Maximum voltage (V max)",
          "symbol": "V max",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": null,
          "typ": null,
          "max": 6,
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        {
          "name": "Maximum interrupt current (I max)",
          "symbol": "I max",
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          "unit": "A",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum time-to-trip current",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "Time-to-trip time 2.00 s",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Hold current",
          "symbol": "I hold",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 4,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Trip current",
          "symbol": "I trip",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation (typical)",
          "symbol": "P d typ.",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Passive aging resistance change",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": -10,
          "typ": null,
          "max": 10,
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          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Humidity aging resistance change",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": -15,
          "typ": null,
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          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal shock resistance change",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": -30,
          "max": null,
          "conditions": "MIL-STD-202 Method 107, +85°C/-40°C, 20 times; typical resistance change",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
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        },
        {
          "name": "Maximum device surface temperature in tripped state",
          "symbol": "",
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          "min": null,
          "typ": null,
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        },
        {
          "name": "Peak / classification temperature (TP)",
          "symbol": "TP",
          "kind": "thermal",
          "unit": "°C",
          "min": -5,
          "typ": 260,
          "max": 0,
          "conditions": "Pb-free assembly; printed as 260 +0/-5 °C",
          "source_page": 6,
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        },
        {
          "name": "Average ramp-up rate (TS(max) to TP)",
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        },
        {
          "name": "Ramp-down rate",
          "symbol": "",
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        },
        {
          "name": "Time 25°C to peak temperature (TP)",
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        },
        {
          "name": "Preheat temperature",
          "symbol": "Ts",
          "kind": "thermal",
          "unit": "°C",
          "min": 150,
          "typ": null,
          "max": 200,
          "conditions": "Pb-free assembly, Ts(min) to Ts(max)",
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        {
          "name": "Preheat time",
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          "min": 60,
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          "conditions": "Pb-free assembly, time from Ts(min) to Ts(max)",
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        },
        {
          "name": "Time maintained above liquidus temperature",
          "symbol": "tL",
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          "min": 60,
          "typ": null,
          "max": 150,
          "conditions": "Pb-free assembly, above TL = 217 °C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Liquidus temperature",
          "symbol": "TL",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": 217,
          "max": null,
          "conditions": "Pb-free assembly",
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          "source": "datasheet"
        },
        {
          "name": "Time within 5°C of actual peak temperature",
          "symbol": "tp",
          "kind": "timing",
          "unit": "seconds",
          "min": 20,
          "typ": null,
          "max": 40,
          "conditions": "Pb-free assembly",
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  "discovery_triggers": [
    "1206l400slwr"
  ],
  "discovery_pitch": "1206L400SLWR (Littelfuse) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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