JER2512F3R012

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  "type": "component",
  "slug": "jer2512f3r012",
  "title": "JER2512F3R012",
  "brief": "jieerrui Current Sense Resistors / Shunt Resistors, 2512. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "manufacturer": "jieerrui",
    "package": "2512",
    "pin_count": 2,
    "category": "Resistors",
    "subcategory": "Current Sense Resistors / Shunt Resistors",
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      "lbr": "jer2512f3r012.lbr"
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    "distributor_links": {
      "lcsc": "C49164692"
    },
    "distributor_check": {
      "checked_at": "2026-10-24T14:19:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
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      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "First resistor terminal (electrode, E = 0.90±0.20 mm on the small-electrode 2512 body); the 2512 part is rated up to 3 W, and power derates linearly above +70 °C to zero at +170 °C."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Second resistor terminal (electrode, E = 0.90±0.20 mm on the small-electrode 2512 body); the element is non-polarized and the two terminals are interchangeable."
      }
    ],
    "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 draws two electrodes on the 2512 body but prints no pin numbers or names. The numbers ; The part-number code R012 means 12 mΩ. That value is not in the marking table, but it is inside the ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
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        "pages_sent": 7,
        "cost_usd": 0.1771,
        "at": "2026-10-24T14:19:32"
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      "datasheet": {
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        "pages": 7,
        "sha256": "6c0d359d39546b43",
        "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"
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "76b2052a3c120193de7cdc0af99157b6f375e9a4af7721e3e3d012968c877f27",
        "checked": "2026-10-24",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "jieerrui",
      "Package": "2512",
      "Category": "Resistors",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "6c0d359d39546b438f6821b7c709fdc469aca08e893a298c0d29b08863684997",
      "rows": [
        {
          "name": "Resistance tolerance (code F)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Tolerance code F = 1%",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Rated power",
          "symbol": "P",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "2512 3W rating; derate above 70 °C ambient per curve",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature coefficient of resistance",
          "symbol": "TCR",
          "kind": "temperature_coefficient",
          "unit": "ppm/℃",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "2512, resistance range 2mΩ~500mΩ",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Resistance range (2512)",
          "symbol": "R",
          "kind": "electrical",
          "unit": "mΩ",
          "min": 0.5,
          "typ": null,
          "max": 500,
          "conditions": "2512 product resistance range",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Insulation resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "MΩ",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "2512, resistance range 0.5mΩ~500mΩ",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "T",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 170,
          "conditions": "Operating Temperature Range",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Short time overload resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "5.0x rated power for 5 s, IEC60115-1 4.13",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Temperature cycling resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "-55℃/+125℃, 1000 cycles, measured 24±4 h after test",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "High temperature exposure resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "125℃, 1000 h, measured 24±4 h after test",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Low temperature storage resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "-55℃, 45 min",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Biased humidity resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "10% of rated power, 85℃/85%RH, 1000 h",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Solderability terminal tin coverage",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 95,
          "typ": null,
          "max": null,
          "conditions": "J-STD-002B test B, 245±5℃, 2~3 s; new tin coverage",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Operational life resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "70±2℃, rated current 1.5 h on / 0.5 h off, 1000 +48/-0 h",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Vibration resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "5g, 10-2000 Hz, 12 cycles, 20 min",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Resistance to solder heat resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "260±5℃, 10±1 s",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Terminal bending resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "2 mm deflection, 60 s",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Mechanical shock resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "100g, half sine, 6 ms",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Terminal strength resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "17.7 N, 60±1 s",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Thermal shock resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "-55/+125℃, 300 cycles",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ESD resistance change",
          "symbol": "ΔR",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "2 kV, 2 times/1 s",
          "source_page": 7,
          "source": "datasheet"
        }
      ]
    }
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  "author": {
    "name": "Ray"
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