main
Ray Set visibility: public fd219f2
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  "title": "MFR0W4F3603A50",
  "brief": "UNI ROYAL Uniroyal Elec Through Hole Resistors, 插件,D2.2xL6.5mm. 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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    "subcategory": "Through Hole Resistors",
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      {
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        "consensus_model": null,
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "at": "2026-11-06T07:22:42"
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        "sha256": "a4c17c09acd8577c",
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        "sha256": "85bdadc9190739c38429da06b1d9c76ccf33aef9a0794a2e7a9dd5b58d9d05fe",
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        "range_mm": [
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      "E1": {
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      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
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        "verdict": "SKIP",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "UNI ROYAL Uniroyal Elec",
      "Package": "R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal",
      "Category": "Resistors",
      "Pins": "2"
    },
    "appearance": {
      "contacts": {
        "quote": "4 Lead wire Tin solder coated copper wire",
        "page": 5,
        "doc": "ds.pdf",
        "material": "copper",
        "plating": "tin"
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      "version": 1,
      "datasheet_sha256": "a4c17c09acd8577cfa500444646d11501862b27ace1ee0f9aea16d72fac6c8b4"
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    "characteristics": {
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      "rows": [
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          "name": "Resistance tolerance",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Order code F = ±1% (part-number 7th code)",
          "source_page": 8,
          "source": "datasheet"
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        {
          "name": "Temperature coefficient of resistance",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "PPM/℃",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "±1% ±50PPM/℃ Max.; test pattern room temp. (T1), room temp. +100℃ (T2)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Max working voltage (RCWV)",
          "symbol": "",
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          "unit": "V",
          "min": null,
          "typ": null,
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          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Max overload voltage",
          "symbol": "",
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          "source_page": 4,
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        },
        {
          "name": "Dielectric withstanding voltage",
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          "typ": null,
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          "conditions": "MF 1/4W normal size",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Short-time overload resistance change",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": -0.5,
          "typ": null,
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          "conditions": "Limit ±(0.5%+0.05Ω) Max.; potential of 2.5 times RCWV for 5 seconds",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Pulse overload resistance change",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Limit ±(1%+0.05Ω) Max.; 10,000 cycles (1 second ON, 25 seconds OFF) at 4 times RCWV",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Resistance to soldering heat resistance change",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Limit ±(1%+0.05Ω) Max.; leads immersed 2.0-2.5mm from body in 260±5℃ solder for 10±1 seconds",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Temperature cycling resistance change",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Limit ±(1%+0.05Ω) Max.; five cycles: -55±3℃ 30 min, room temp. 10-15 min, +155±2℃ 30 min, room temp. 10-15 min",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Load life in humidity resistance change",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": -1.5,
          "typ": null,
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          "conditions": "Normal type; 1,000 hours (1.5 h ON, 0.5 h OFF) at RCWV, 40±2℃, 90 to 95% RH",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Load life resistance change",
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          "source_page": 7,
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          "name": "Solderability coverage",
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          "conditions": "Minimum coverage; solder test temp. 245±3℃, dwell time 2-3 seconds",
          "source_page": 7,
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        {
          "name": "Operating ambient temperature (full rated load)",
          "symbol": "",
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          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 70,
          "conditions": "Continuous load at rated power; derate above 70℃ per Figure 1",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Recommended storage temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": 15,
          "typ": null,
          "max": 35,
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          "source_page": 13,
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        {
          "name": "Recommended storage humidity",
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          "typ": null,
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          "source_page": 13,
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          "source_page": 8,
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  "discovery_triggers": [
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  "discovery_pitch": "MFR0W4F3603A50 (UNI ROYAL Uniroyal Elec) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray"
  },
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