LR122WF220LT4E

{
  "slug": "lr122wf220lt4e",
  "version": "0.1.0",
  "type": "component",
  "description": "UNI ROYAL Uniroyal Elec Current Sense Resistors / Shunt Resistors, 2512. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "resistors",
    "lr122wf220lt4e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lr122wf220lt4e.kicad_sym",
    "lr122wf220lt4e.kicad_mod",
    "lr122wf220lt4e.glb",
    "lr122wf220lt4e.step",
    "lr122wf220lt4e.lbr",
    "docs/hero.png",
    "docs/lr122wf220lt4e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lr122wf220lt4e-hero.glb",
    "lr122wf220lt4e-hero.overlay.json",
    "lr122wf220lt4e-etched.glb"
  ],
  "component": {
    "mpn": "LR122WF220LT4E",
    "manufacturer": "UNI ROYAL Uniroyal Elec",
    "package": "2512",
    "pin_count": 2,
    "category": "Resistors",
    "subcategory": "Current Sense Resistors / Shunt Resistors",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904919094341632",
    "parts": {
      "symbol": "lr122wf220lt4e.kicad_sym",
      "footprint": "lr122wf220lt4e.kicad_mod",
      "model_3d": "lr122wf220lt4e-hero.glb",
      "model_3d_plain": "lr122wf220lt4e-etched.glb",
      "model_3d_step": "lr122wf220lt4e-etched.step",
      "model_3d_step_plain": "lr122wf220lt4e.step",
      "lbr": "lr122wf220lt4e.lbr"
    },
    "distributor_links": {
      "lcsc": "C2941078"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T21:49:40Z",
      "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": "One of the two end terminals of the LR12 2W metal strip chip resistor (6.35±0.254 x 3.18±0.254 mm body); the part is non-polarized and rated 2W at 70°C."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "The other end terminal of the LR12 2W metal strip chip resistor; the part is non-polarized and either terminal may be connected to either side of the circuit."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "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 shows no pin numbers. The page 4 drawing only shows two end terminals, labelled by dim; The part number decodes as LR12, 2W, ±1% (F), 220 with L meaning 10^-3 (220 mΩ), tape and reel, 4000",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 8,
        "cost_usd": 0.2106,
        "at": "2026-10-26T21:49:31"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904919094341632",
        "pages": 8,
        "sha256": "9cafe18fe2eb29b6",
        "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"
    },
    "models_3d": [
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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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          3.2,
          0.6
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "76b2052a3c120193de7cdc0af99157b6f375e9a4af7721e3e3d012968c877f27",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lr122wf220lt4e-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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "de6ccf591361be743cb47e27c12de4d9d7c94bbc6feb146e2c2ed0cd1306aa99",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}