MFR-25FRF52-40K2

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  "slug": "mfr-25frf52-40k2",
  "title": "MFR-25FRF52-40K2",
  "brief": "YAGEO Through Hole Resistors, 插件,D2.4xL6.3mm. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.",
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    "manufacturer": "YAGEO",
    "package": "R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal",
    "pin_count": 2,
    "category": "Resistors",
    "subcategory": "Through Hole Resistors",
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      "model_3d_plain": "mfr-25frf52-40k2.glb"
    },
    "distributor_links": {
      "lcsc": "C1741814",
      "digikey": "13-MFR-25FRF52-40K2TR-ND",
      "mouser": "603-MFR-25FRF52-40K2"
    },
    "distributor_check": {
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "13-MFR-25FRF52-40K2TR-ND",
        "status": "found",
        "lifecycle": "Active"
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      "mouser": {
        "pn": "603-MFR-25FRF52-40K2",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "Terminal 1 of an unpolarised resistor; either orientation."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Terminal 2 of an unpolarised resistor; either orientation."
      }
    ],
    "provenance": {
      "extractor": "extract_pins",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins",
        "primary_model": "two-terminal convention",
        "primary_mode": "convention",
        "consensus_model": null,
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
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        "cost_usd": 0.0025,
        "at": "2026-11-06T07:29:05"
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      "datasheet": {
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        "pages": 17,
        "sha256": "b460acdb47646977",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.76,
          2.5,
          5.5
        ],
        "zmin_mm": -3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "85bdadc9190739c38429da06b1d9c76ccf33aef9a0794a2e7a9dd5b58d9d05fe",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "YAGEO",
      "Package": "R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal",
      "Category": "Resistors",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "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 (code F)",
          "symbol": "TCR",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": -100,
          "typ": null,
          "max": 100,
          "conditions": "TCR code F = ±100ppm/°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Rated power",
          "symbol": "P",
          "kind": "recommended_operating",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.25,
          "conditions": "1/4W for MFR-25 at 70°C; derated above 70°C per derating curve",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum working voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "MFR-25 column",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum overload voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "MFR-25 column",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Voltage proof on insulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "MFR-25 column; V-Block for 60 sec.; no breakdown",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 155,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Resistance range (minimum)",
          "symbol": "R",
          "kind": "electrical",
          "unit": "Ω",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "E24 & E96 series values; printed 1Ω ~ 4M7Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Resistance range (maximum)",
          "symbol": "R",
          "kind": "electrical",
          "unit": "MΩ",
          "min": null,
          "typ": null,
          "max": 4.7,
          "conditions": "E24 & E96 series values; printed 1Ω ~ 4M7Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Insulation resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "MΩ",
          "min": 10000,
          "typ": null,
          "max": null,
          "conditions": "In V-Block for 60 sec.",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Short time overload resistance change",
          "symbol": "ΔR/R",
          "kind": "electrical",
          "unit": "%",
          "min": -0.25,
          "typ": null,
          "max": 0.25,
          "conditions": "2.5 times RCWV for 5 sec. (not more than max overload voltage); appraise ±0.25%+0.05Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Periodic-pulse overload resistance change",
          "symbol": "ΔR/R",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "4 times RCWV, 10,000 cycles (1 Sec. on, 25 Sec. off); appraise ±1.0%+0.05Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Damp heat steady state resistance change",
          "symbol": "ΔR/R",
          "kind": "electrical",
          "unit": "%",
          "min": -1.5,
          "typ": null,
          "max": 1.5,
          "conditions": "40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV; appraise ±1.5%+0.05Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Endurance at 70°C resistance change",
          "symbol": "ΔR/R",
          "kind": "electrical",
          "unit": "%",
          "min": -1.5,
          "typ": null,
          "max": 1.5,
          "conditions": "70±2°C at RCWV (or Umax., whichever less) for 1,000 Hr. (1.5 Hr on, 0.5 Hr off); appraise ±1.5%+0.05Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Temperature cycling resistance change",
          "symbol": "ΔR/R",
          "kind": "electrical",
          "unit": "%",
          "min": -0.75,
          "typ": null,
          "max": 0.75,
          "conditions": "-55°C → Room Temp. → +155°C → Room Temp. (5 cycles); appraise ±0.75%+0.05Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Resistance to soldering heat resistance change",
          "symbol": "ΔR/R",
          "kind": "electrical",
          "unit": "%",
          "min": -0.25,
          "typ": null,
          "max": 0.25,
          "conditions": "260±3°C for 10±1 Sec., immersed to 3±0.5mm from the body; appraise ±0.25%+0.05Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Solderability coverage",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 95,
          "typ": null,
          "max": null,
          "conditions": "245±5°C for 3±0.5 Sec.; minimum coverage",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Robustness of terminations (direct load)",
          "symbol": "",
          "kind": "electrical",
          "unit": "Kg",
          "min": 2.5,
          "typ": null,
          "max": null,
          "conditions": "Direct load for 10 Sec. in direction of terminal leads; printed ≥2.5Kg (24.5N)",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "MFR-25FRF52-40K2 (YAGEO) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray"
  },
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