main
Ray Set visibility: public a5a8cee 15d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "frm252wfr050tn",
  "title": "FRM252WFR050TN",
  "brief": "FOJAN 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",
    "frm252wfr050tn",
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    "extractor-text"
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  "component": {
    "mpn": "FRM252WFR050TN",
    "manufacturer": "FOJAN",
    "package": "2512",
    "pin_count": 2,
    "category": "Resistors",
    "subcategory": "Current Sense Resistors / Shunt Resistors",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8763504927555358720",
    "parts": {
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      "model_3d_step_plain": "frm252wfr050tn.step",
      "lbr": "frm252wfr050tn.lbr"
    },
    "distributor_links": {
      "lcsc": "C7420008"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T14:29:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "First end terminal (tin-plated electrode) of the 50 mΩ 2512 alloy resistor, rated 2 W at 70 °C and 63 A rated current; pad per datasheet is a=4.0±0.1, b=2.1±0.1, L=4.1±0.1 mm."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Second end terminal (tin-plated electrode) of the resistor, interchangeable with the other terminal; the resistance is measured Kelvin four-terminal at the product bottom (A=5.6±0.25 mm, B=2.0±0.25 mm) and max overload current is 141 A."
      }
    ],
    "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 has no numbered pin assignment. This is a two-terminal chip resistor, so pins 1 and 2 ; The datasheet text lists two 2512 constructions (0.5~4 mΩ and 1~680 mΩ with an aluminum heat sink). ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 12,
        "cost_usd": 0.1863,
        "at": "2026-10-19T14:27:18"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8763504927555358720",
        "pages": 12,
        "sha256": "13a1c74e6b23cc10",
        "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": "frm252wfr050tn.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": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "frm252wfr050tn-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": "6f67fcdf87b1609f13535740e224a067d532a048840cba51fed8e213d239397a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "FOJAN",
      "Package": "2512",
      "Category": "Resistors",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "13a1c74e6b23cc103f7c52a55ce0edc65423850e201e50a32caf4d07cd5fd420",
      "rows": [
        {
          "name": "Resistance tolerance (code F)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "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": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Resistance range (standard 2512 row)",
          "symbol": "R",
          "kind": "electrical",
          "unit": "mΩ",
          "min": 1,
          "typ": null,
          "max": 680,
          "conditions": "Standard 2512 row, not 2512-L",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Power rating",
          "symbol": "P",
          "kind": "electrical",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Power rating at P70",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Rated current",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 63,
          "conditions": "Single printed value in 2512 row; no test condition printed",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Max overload current",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 141,
          "conditions": "Single printed value in 2512 row; no test condition printed",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 170,
          "conditions": "2512 row",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after high temperature exposure (storage)",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "170 °C, 1000 h; measured 24 h after test",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after low temperature exposure (storage)",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "-55 °C, 1000 h; measured 24 h after test",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after temperature cycling",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "1000 cycles, -55 °C to 125 °C; measured 24 h after test",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after short time overload",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "5 × rated power for 5 s",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after moisture resistance",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "24 h per cycle, 10 cycles, no power",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after biased humidity",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "10% rated power, 85 °C, RH 85%, 1000 h; measured 24 h after test",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after load life",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "1000 h at +70 °C, 1.5 h ON / 0.5 h OFF; measured 24 h after test",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after resistance to soldering heat",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "260±5 °C solder, 10±1 s dwell",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after mechanical shock",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "100 g, 6 ms half sine",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after vibration",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "5 g, 10-2000 Hz, 20 min per cycle, 12 cycles per axis",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after board flex",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "Min 2 mm deflection, 60 s",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after thermal shock",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "-55 °C/+155 °C, 1000 cycles",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after ESD test",
          "symbol": "ΔR",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Direct contact ±6 kV; air discharge up to +25 kV",
          "source_page": 7,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "frm252wfr050tn"
  ],
  "discovery_pitch": "FRM252WFR050TN (FOJAN) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "viewers/footprint.html",
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    "frm252wfr050tn-hero.overlay.json",
    "frm252wfr050tn-etched.glb"
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  "visibility": {
    "public": true
  }
}