main
Ray Set visibility: public 73e12b3
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  "type": "component",
  "slug": "lr122wf800nt4e",
  "title": "LR122WF800NT4E",
  "brief": "UNI ROYAL Uniroyal Elec Current Sense Resistors / Shunt Resistors, 2512. 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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    "package": "2512",
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    "category": "Resistors",
    "subcategory": "Current Sense Resistors / Shunt Resistors",
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    "distributor_links": {
      "lcsc": "C2941063",
      "mouser": "303-LR122WF800NT4E"
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    "distributor_check": {
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "303-LR122WF800NT4E",
        "status": "found"
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    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "Terminal 1 of an unpolarised resistor; either orientation."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Terminal 2 of an unpolarised resistor; either orientation."
      }
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    "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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        "cost_usd": 0.0009,
        "at": "2026-10-20T18:18:36"
      },
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        "pages": 2,
        "sha256": "25d6b19b196c3aac",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "footprint_binding": "identity",
        "sha256": "76b2052a3c120193de7cdc0af99157b6f375e9a4af7721e3e3d012968c877f27",
        "checked": "2026-10-20",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "UNI ROYAL Uniroyal Elec",
      "Package": "2512",
      "Category": "Resistors",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "25d6b19b196c3aacf8cc70bcc6667e3b8f877d85bd5a053b8450733e807aceec",
      "rows": [
        {
          "name": "Short-time overload resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "Run at 5 times rated power for 5 s at room temperature; printed as ±(0.5%+0.0005Ω), the 0.0005 Ω absolute term is added to this limit",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Soldering heat resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "Printed as ±(0.5%+0.0005Ω), the 0.0005 Ω absolute term is added to this limit; test conditions not printed",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal shock resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "Printed as ±(0.5%+0.0005Ω), the 0.0005 Ω absolute term is added to this limit; test conditions not printed",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Load life resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Printed as ±(1%+0.0005Ω), the 0.0005 Ω absolute term is added to this limit; test conditions not printed",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Standard operating temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 170,
          "conditions": "Standard operating temperature range",
          "source_page": 1,
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        },
        {
          "name": "Resistance tolerance (F code = ±1%)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Tolerance code F in part number",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Nominal resistance (decoded from part number)",
          "symbol": "R",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "Decoded from 500N in part number (500 × 10^-5 Ω); matches the 5mΩ example in the ordering procedure",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Rated power (wattage code 2W)",
          "symbol": "",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "Decoded from wattage code 2W in part number",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "LR122WF800NT4E (UNI ROYAL Uniroyal Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray"
  },
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