CMFB503F3950HANT

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  "slug": "cmfb503f3950hant",
  "title": "CMFB503F3950HANT",
  "brief": "FH Guangdong Fenghua Advanced Tech NTC Thermistors, 0805. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "CMFB503F3950HANT",
    "manufacturer": "FH Guangdong Fenghua Advanced Tech",
    "package": "0805",
    "pin_count": 2,
    "category": "Sensors",
    "subcategory": "NTC Thermistors",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590920773693349888",
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      "lbr": "cmfb503f3950hant.lbr"
    },
    "distributor_links": {
      "lcsc": "C20624332"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T04:12:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
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      "mouser": {
        "pn": null,
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    },
    "pins": [
      {
        "number": "1",
        "name": "Terminal 1",
        "type": "passive",
        "description": "One of the two non-polar end-termination electrodes (Ni plating + solder plating) of the 2.0×1.2 mm chip NTC thermistor, R25 = 50 kΩ ±1%, B(25/50) = 3950 K."
      },
      {
        "number": "2",
        "name": "Terminal 2",
        "type": "passive",
        "description": "The other non-polar end-termination electrode (Ni plating + solder plating) of the 2.0×1.2 mm chip NTC thermistor, R25 = 50 kΩ ±1%, B(25/50) = 3950 K."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "cost_usd": 0.1468,
        "at": "2026-10-18T04:10:29"
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        "pages": 8,
        "sha256": "01b03dd4c210150b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
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      "footprint": "viewers/footprint.html"
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ded342cdb394fb45395227beaaa75cc390613cf2581b29cd6d22c12abd6103b2",
        "checked": "2026-10-18",
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  "metadata": {
    "specs": {
      "Manufacturer": "FH Guangdong Fenghua Advanced Tech",
      "Package": "0805",
      "Category": "Sensors",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "01b03dd4c210150bdb2292f2ee20917059c044ad1392aae9fc5e69922e768889",
      "rows": [
        {
          "name": "Rated resistance (R25)",
          "symbol": "R25",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "Decoded from MPN code 503 (50 kΩ); printed in the 0805 table as CMFB503□4050 HANT",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Resistance tolerance at 25°C",
          "symbol": "R25",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Tolerance code F in MPN; printed as ±1 in the tolerance code table",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "B value (B25/50)",
          "symbol": "B25/50",
          "kind": "electrical",
          "unit": "K",
          "min": null,
          "typ": 3950,
          "max": null,
          "conditions": "Decoded from MPN code 3950; the 0805 table lists 50 kΩ only at 4050 K",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after resistance to soldering heat",
          "symbol": "R25",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Preheat 120~150°C 60 s; solder 260±5°C, 10±1 s",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after flexure strength test",
          "symbol": "R25",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Bend 1.0 mm for 0805/1206; speed 0.5 mm/s",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Resistance change after reliability tests",
          "symbol": "R25",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "B value change after reliability tests",
          "symbol": "B25/50",
          "kind": "tolerance",
          "unit": "%",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "CMFB503F3950HANT (FH Guangdong Fenghua Advanced Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
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    "email": "[email protected]"
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