TL431-0.5%

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  "slug": "tl431-0-5",
  "title": "TL431-0.5%",
  "brief": "TDSEMIC Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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    "mpn": "TL431-0.5%",
    "manufacturer": "TDSEMIC",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8614112909643833344",
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    "pins": [
      {
        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "Reference input to the internal error amplifier's non-inverting input. Compared against the internal 2.5 V Vref; drives cathode current when REF exceeds Vref. Reference input current range is up to 10 mA (absolute max); typical low regulation current is 240 uA."
      },
      {
        "number": "2",
        "name": "CATHODE",
        "type": "power_in",
        "description": "Cathode (K) of the shunt regulator. Sinks current to hold the REF pin at 2.5 V. Operating cathode voltage Vka = Vref (2.5 V) to 36 V; cathode current 0.3 mA to 100 mA (absolute max -100 to 150 mA)."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "power_in",
        "description": "Anode (A) of the shunt regulator; connects to the circuit's low-side / ground return for the reference current path."
      }
    ],
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        "pages": 13,
        "sha256": "9792a244d74188a4",
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      "pins": {
        "total": 3,
        "described": 3,
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          3.0,
          1.2
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
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  "metadata": {
    "specs": {
      "Manufacturer": "TDSEMIC",
      "Package": "SOT-23",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    }
  },
  "variants": [
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      "mpn": "TL431-0.5%N",
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    },
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      "mpn": "TL431-0.5%Z",
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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  "updated_at": "2026-09-25T09:54:09.813Z"
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