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Ray Set visibility: public a2310a1 4h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "lr123wf110lt4e",
  "title": "LR123WF110LT4E",
  "brief": "UNI ROYAL Uniroyal Elec Current Sense Resistors / Shunt Resistors, 2512. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "extractor-text"
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    "manufacturer": "UNI ROYAL Uniroyal Elec",
    "package": "2512",
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    "category": "Resistors",
    "subcategory": "Current Sense Resistors / Shunt Resistors",
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      "footprint": "lr123wf110lt4e.kicad_mod",
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      "lbr": "lr123wf110lt4e.lbr"
    },
    "distributor_links": {
      "lcsc": "C19633817",
      "mouser": "303-LR123WF110LT4E"
    },
    "distributor_check": {
      "checked_at": "2026-11-07T04:26:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "303-LR123WF110LT4E",
        "status": "found",
        "lifecycle": "New Product"
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    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "First terminal of the LR12 (2512) metal strip chip resistor; the part is non-polarized and rated 3W at 70°C ambient for this 3W type, with a resistance of 110mΩ (code 110L) at ±1%."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Second terminal of the LR12 (2512) metal strip chip resistor; interchangeable with the first terminal, with recommended land pads of 2.30mm x 3.68mm and 3.15mm gap for 3mΩ~350mΩ values."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "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 a two-terminal chip resistor and never prints pin numbers or names for the termi",
          "vision extraction: provenance cannot be text-verified; needs consensus"
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        "pages_sent": 6,
        "cost_usd": 0.1664,
        "at": "2026-11-07T04:26:12"
      },
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        "pages": 6,
        "sha256": "697e24f2047069dc",
        "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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        "seat": "z = 0",
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        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "76b2052a3c120193de7cdc0af99157b6f375e9a4af7721e3e3d012968c877f27",
        "checked": "2026-11-07",
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  "metadata": {
    "specs": {
      "Manufacturer": "UNI ROYAL Uniroyal Elec",
      "Package": "2512",
      "Category": "Resistors",
      "Pins": "2"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "697e24f2047069dc9d8094688abb5f7ac53590c48ef944d1280a5a558ac29895",
      "rows": [
        {
          "name": "Resistance tolerance",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Tolerance code F = ±1% (7th code of LR123WF110LT4E)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature coefficient of resistance",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "R2-R1/(R1(t2-t1)) x10^6; t1 +25°C, t2 125°C test temperature",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Short-time overload resistance change (LR12-3W)",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "4 times rated power for 5 seconds",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load life resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "1000 h at rated or max working current (whichever less), duty 1.5 h ON / 0.5 h OFF, 70±2°C ambient",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High temperature exposure resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "155±2°C for 1000 h (MIL-STD-202 108A)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Biased humidity resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "1000 h at 85°C/85%RH, 10% of operating power; measured at 24±4 h after test",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Rapid change of temperature resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "30 min at -55°C and 30 min at 155°C; 100 cycles",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Terminal bending resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "2 mm, 10 s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Resistance to solder heat resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "Dip at 260±5°C for 10±1 s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Solderability coverage",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 95,
          "typ": null,
          "max": null,
          "conditions": "Solder at 245±3°C, dwell 2~3 s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Dielectric withstanding surge current limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "500 VAC applied for 1 minute; limit surge current",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Rated power",
          "symbol": "P",
          "kind": "recommended_operating",
          "unit": "W",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "Wattage code 3W (5th-6th code); continuous load, derated above 70°C ambient per Figure 1",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Rated ambient temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "Power rating based on continuous load; derating above this ambient",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
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  "discovery_triggers": [
    "lr123wf110lt4e"
  ],
  "discovery_pitch": "LR123WF110LT4E (UNI ROYAL Uniroyal Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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