main
Ray Set visibility: public 0eac701 13d ago
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592
{
  "schema_version": 1,
  "type": "component",
  "slug": "lr122wf150lt4e",
  "title": "LR122WF150LT4E",
  "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": [
    "component",
    "resistors",
    "lr122wf150lt4e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LR122WF150LT4E",
    "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/8603144027294212096",
    "parts": {
      "symbol": "lr122wf150lt4e.kicad_sym",
      "footprint": "lr122wf150lt4e.kicad_mod",
      "model_3d": "lr122wf150lt4e-hero.glb",
      "model_3d_plain": "lr122wf150lt4e-etched.glb",
      "model_3d_step": "lr122wf150lt4e-etched.step",
      "model_3d_step_plain": "lr122wf150lt4e.step",
      "lbr": "lr122wf150lt4e.lbr"
    },
    "distributor_links": {
      "lcsc": "C2941075",
      "mouser": "303-LR122WF150LT4E"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T03:12:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "303-LR122WF150LT4E",
        "status": "found",
        "lifecycle": "New Product"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "First terminal of the LR12 (2512) metal strip chip resistor, a Sn-plated end electrode (A = 0.90±0.25 mm or 0.65±0.25 mm depending on rating and resistance range) for the 3~350mΩ element."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Second terminal of the LR12 (2512) metal strip chip resistor, a Sn-plated end electrode interchangeable with the first, rated 1.5W (LR122W-class 2W/3W series per part code, 1A=1.5W) at 70°C with derating above 70°C."
      }
    ],
    "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 a two-terminal chip resistor and prints no pin numbers. Pins 1 and 2 are assumed",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 7,
        "cost_usd": 0.149,
        "at": "2026-10-21T03:11:53"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603144027294212096",
        "pages": 7,
        "sha256": "e01cdf7929676065",
        "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": [
      {
        "file": "lr122wf150lt4e.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": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lr122wf150lt4e-etched.step",
        "role": "eda",
        "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": "1bb228fc3774eb20832a22f72bf6f9b1f829546686ddd1057eb36aa3091f9abe",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UNI-ROYAL(Uniroyal Elec)",
      "Package": "2512",
      "Category": "Resistors",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "e01cdf79296760658e44874b621dcf551f1ff030814c1cbad08648b6342a6a03",
      "rows": [
        {
          "name": "Resistance tolerance (part-number code F)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "MPN 7th code F = ±1%",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature coefficient of resistance",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "t1 +25°C, t2 125°C test temperature",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Resistance range, LR12 (2512) 2W",
          "symbol": "R",
          "kind": "electrical",
          "unit": "mΩ",
          "min": 26,
          "typ": null,
          "max": 350,
          "conditions": "LR12 2W, 26~350mΩ group",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Nominal resistance (decoded from MPN codes 8-11)",
          "symbol": "R",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.15,
          "max": null,
          "conditions": "MPN digits 150 with 11th code L = 10^-3",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Rated power",
          "symbol": "P",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Continuous load at ambient 70°C; derate above 70°C per Figure 1",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Short-time overload ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "5 times rated power for 5 s (LR12-2W)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Short-time overload ΔR additive term",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "Ω",
          "min": -0.0005,
          "typ": null,
          "max": 0.0005,
          "conditions": "5 times rated power for 5 s (LR12-2W)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load life ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "1000 h at 70±2°C, rated or max working current (lesser), 1.5 h ON / 0.5 h OFF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load life ΔR additive term",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "Ω",
          "min": -0.0005,
          "typ": null,
          "max": 0.0005,
          "conditions": "1000 h at 70±2°C, rated or max working current (lesser), 1.5 h ON / 0.5 h OFF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High temperature exposure ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "MIL-STD-202 108A, 155±2°C, 1000 h",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High temperature exposure ΔR additive term",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "Ω",
          "min": -0.0005,
          "typ": null,
          "max": 0.0005,
          "conditions": "MIL-STD-202 108A, 155±2°C, 1000 h",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Biased humidity ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "MIL-STD-202 Method 103, 85°C/85%RH, 1000 h, 10% of operating power",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Biased humidity ΔR additive term",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "Ω",
          "min": -0.0005,
          "typ": null,
          "max": 0.0005,
          "conditions": "MIL-STD-202 Method 103, 85°C/85%RH, 1000 h, 10% of operating power",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Rapid change of temperature ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "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": "Rapid change of temperature ΔR additive term",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "Ω",
          "min": -0.0005,
          "typ": null,
          "max": 0.0005,
          "conditions": "30 min at -55°C and 30 min at 155°C; 100 cycles",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Terminal bending ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "2 mm, 10 s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Terminal bending ΔR additive term",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "Ω",
          "min": -0.0005,
          "typ": null,
          "max": 0.0005,
          "conditions": "2 mm, 10 s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Resistance to solder heat ΔR",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "260±5°C, held 10±1 s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Resistance to solder heat ΔR additive term",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "Ω",
          "min": -0.0005,
          "typ": null,
          "max": 0.0005,
          "conditions": "260±5°C, held 10±1 s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Solderability terminal coverage",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 95,
          "typ": null,
          "max": null,
          "conditions": "Solder temperature 245±3°C, dwell 2~3 s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Dielectric withstanding test current limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "Applied 500 VAC for 1 min; limit surge current",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Preheat temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 150,
          "typ": null,
          "max": 200,
          "conditions": "Pb-free reflow, Tsmin to Tsmax",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Preheat time",
          "symbol": "ts",
          "kind": "timing",
          "unit": "s",
          "min": 60,
          "typ": null,
          "max": 120,
          "conditions": "Pb-free reflow, Tsmin to Tsmax",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Average ramp-up rate",
          "symbol": "",
          "kind": "timing",
          "unit": "°C/s",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "Ts max to Tp",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Time maintained above TL",
          "symbol": "tL",
          "kind": "timing",
          "unit": "s",
          "min": 60,
          "typ": null,
          "max": 150,
          "conditions": "TL = 217°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Liquidus temperature TL",
          "symbol": "TL",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": null,
          "typ": 217,
          "max": null,
          "conditions": "Time maintained above TL",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Peak temperature",
          "symbol": "Tp",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "Pb-free solder Sn96.5/Ag3/Cu0.5",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Time within +0/-5°C of actual peak temperature",
          "symbol": "tp",
          "kind": "timing",
          "unit": "s",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "Within +0/-5°C of actual peak temperature",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Ramp-down rate",
          "symbol": "",
          "kind": "timing",
          "unit": "°C/s",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "From peak temperature",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Time 25°C to peak temperature",
          "symbol": "",
          "kind": "timing",
          "unit": "min",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "25°C to peak temperature",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Allowed reflow times",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "times",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Reflow soldering",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Recommended storage temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 15,
          "typ": null,
          "max": 35,
          "conditions": "Recommended warehouse storage (storage, not operating)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Recommended storage humidity",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "%RH",
          "min": 25,
          "typ": null,
          "max": 75,
          "conditions": "Recommended warehouse storage (storage, not operating)",
          "source_page": 7,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lr122wf150lt4e"
  ],
  "discovery_pitch": "LR122WF150LT4E (UNI-ROYAL(Uniroyal Elec)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lr122wf150lt4e.kicad_sym",
    "lr122wf150lt4e.kicad_mod",
    "lr122wf150lt4e.glb",
    "lr122wf150lt4e.step",
    "lr122wf150lt4e.lbr",
    "docs/hero.png",
    "docs/lr122wf150lt4e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lr122wf150lt4e-hero.glb",
    "lr122wf150lt4e-hero.overlay.json",
    "lr122wf150lt4e-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}