LRBM25GFER050

{
  "schema_version": 1,
  "type": "component",
  "slug": "lrbm25gfer050",
  "title": "LRBM25GFER050",
  "brief": "NCT 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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    "resistors",
    "lrbm25gfer050",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "LRBM25GFER050",
    "manufacturer": "NCT",
    "package": "2512",
    "pin_count": 2,
    "category": "Resistors",
    "subcategory": "Current Sense Resistors/Shunt Resistors",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8608758418698223616",
    "parts": {
      "symbol": "lrbm25gfer050.kicad_sym",
      "footprint": "lrbm25gfer050.kicad_mod",
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      "model_3d_plain": "lrbm25gfer050-etched.glb",
      "model_3d_step": "lrbm25gfer050-etched.step",
      "model_3d_step_plain": "lrbm25gfer050.step",
      "lbr": "lrbm25gfer050.lbr"
    },
    "distributor_links": {
      "lcsc": "C5121147"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T16:05:20Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 989 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "First terminal (electrode) of the 2512 current-sense resistor, 6.4±0.2 x 3.2±0.2 mm body, rated 3W maximum at 70°C with derating above, operating range -55 to +170°C."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Second terminal (electrode) of the 2512 current-sense resistor, interchangeable with the first; resistance is measured 4-wire across the electrodes and the part has a maximum rated current of 38.73 A for LRB*25** 3W 2~100 mΩ."
      }
    ],
    "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 drawings show two unnumbered electrodes on a two-terminal resistor. The pin numbers 1 ; The MPN suffix R050 would be 50 mΩ by the datasheet's own encoding (R001=1mR, R010=10mR). The title ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 6,
        "cost_usd": 0.171,
        "at": "2026-10-23T16:04:35"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8608758418698223616",
        "pages": 6,
        "sha256": "13512fac2aa9df8a",
        "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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        "file": "lrbm25gfer050.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.3,
          3.2,
          0.6
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "76b2052a3c120193de7cdc0af99157b6f375e9a4af7721e3e3d012968c877f27",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lrbm25gfer050-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": "19c2d5b7812be2b7468285ece9c5d47f79a2e9098f6bbd7c3029ef66dd95a7c0",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "NCT",
      "Package": "2512",
      "Category": "Resistors",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "13512fac2aa9df8a51dc7646aac65410622c0279c96483913316d0dc5debfe5f",
      "rows": [
        {
          "name": "Resistance tolerance (code F)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Part-number tolerance code F = ±1%",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature coefficient of resistance",
          "symbol": "TCR",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "LRB*25** 3 W row, resistance range 2~100 mΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Resistance range",
          "symbol": "R",
          "kind": "electrical",
          "unit": "mΩ",
          "min": 2,
          "typ": null,
          "max": 100,
          "conditions": "LRB*25** 3 W row (non-S)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum rated power",
          "symbol": "P",
          "kind": "recommended_operating",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "LRB*25** 3 W row; rating derated above 70 °C per power derating curve",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum rated current",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 38.73,
          "conditions": "LRB*25** 3 W row, resistance range 2~100 mΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum overload current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 86.6,
          "conditions": "LRB*25** 3 W row, resistance range 2~100 mΩ",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 170,
          "conditions": "Stated for LRA/LRB *25** series rows",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 5,
          "typ": null,
          "max": 35,
          "conditions": "Sealed storage, away from direct sunlight and corrosive gases",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Storage relative humidity",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "",
          "min": 40,
          "typ": null,
          "max": 75,
          "conditions": "Sealed storage at 5~35 °C; unit not printed",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Short time overload resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "5 s overload at 5 times rated power (2512, 3 W), 24 h rest",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Biased humidity resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "85 °C/85 %RH, 10% of rated power, 1000 h, 24±4 h rest",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Temperature cycling resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "-55 °C to +150 °C, 1000 cycles, 15 min dwell",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low temperature exposure resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "-55±2 °C, 96 h",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High temperature exposure resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "170 °C, 1000 h",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Load life resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "70±2 °C, rated power, 90 min ON / 30 min OFF, 1000 h",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Resistance to solder heat resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "260±5 °C solder bath, 10±1 s",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Terminal bending resistance change",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "2.5 kg load, 2 mm deflection, 60 s",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Nominal resistance (code R050)",
          "symbol": "R",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "Code R050 = 50 mΩ (R001=1mR, R010=10mR)",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
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  "discovery_triggers": [
    "lrbm25gfer050"
  ],
  "discovery_pitch": "LRBM25GFER050 (NCT) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray"
  },
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    "path": "docs/hero.png"
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    "lrbm25gfer050-etched.glb"
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  "visibility": {
    "public": true
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}