TL431APA

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  "title": "TL431APA",
  "brief": "PJSEMI Voltage Reference, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "mpn": "TL431APA",
    "manufacturer": "PJSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
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      "digikey": {
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        "status": "no match"
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      "mouser": {
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        "number": "1",
        "name": "Cathode",
        "type": "passive",
        "description": "Cathode is the regulated output terminal; the TL431 sinks cathode current from 1 mA to 100 mA and operates with VKA from VREF up to 36 V (absolute maximum 37 V)."
      },
      {
        "number": "2",
        "name": "Anode",
        "type": "passive",
        "description": "Anode is the common return terminal of the shunt regulator, and cathode current flows from the cathode into the anode."
      },
      {
        "number": "3",
        "name": "Anode",
        "type": "passive",
        "description": "Anode is the common return terminal of the shunt regulator, and cathode current flows from the cathode into the anode."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; this pin is not connected inside the device."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; this pin is not connected inside the device."
      },
      {
        "number": "6",
        "name": "Anode",
        "type": "passive",
        "description": "Anode is the common return terminal of the shunt regulator, and cathode current flows from the cathode into the anode."
      },
      {
        "number": "7",
        "name": "Anode",
        "type": "passive",
        "description": "Anode is the common return terminal of the shunt regulator, and cathode current flows from the cathode into the anode."
      },
      {
        "number": "8",
        "name": "Ref",
        "type": "input",
        "description": "Reference input to the internal approximately 2.495 V reference; the output voltage is set by the external divider from this pin, with typical reference input current of 1.5 µA."
      }
    ],
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        "at": "2026-10-18T01:55:52"
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        "sha256": "7c0f5f7aa8485986",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "described": 8,
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  "metadata": {
    "specs": {
      "Manufacturer": "PJSEMI",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
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      "source": "datasheet",
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          "name": "Reference Input Voltage (TL431A, 0.5%)",
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          "unit": "V",
          "min": 2.483,
          "typ": 2.495,
          "max": 2.507,
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          "name": "Deviation of Reference Input Voltage Over Temperature",
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          "name": "Ratio of Change in Reference Input Voltage to Change in Cathode Voltage (10V to VREF)",
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          "kind": "electrical",
          "unit": "mV/V",
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          "conditions": "IKA=10mA, ΔVKA=10V~VREF (Fig2)",
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        {
          "name": "Ratio of Change in Reference Input Voltage to Change in Cathode Voltage (36V to 10V)",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
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          "symbol": "ΔIREF",
          "kind": "electrical",
          "unit": "µA",
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          "max": 1.2,
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        },
        {
          "name": "Minimum Cathode Current for Regulation",
          "symbol": "IKA(MIN)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.45,
          "max": 1,
          "conditions": "VKA=VREF (Fig1)",
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          "source": "datasheet"
        },
        {
          "name": "Off-State Cathode Current",
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          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.05,
          "max": 1,
          "conditions": "VKA=36V, VREF=0 (Fig3)",
          "source_page": 4,
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        },
        {
          "name": "Dynamic Impedance",
          "symbol": "ZKA",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.15,
          "max": 0.5,
          "conditions": "VKA=VREF, IKA=1~100mA, f≤1.0KHz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Cathode Voltage (absolute maximum)",
          "symbol": "VKA",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 37,
          "conditions": "",
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        },
        {
          "name": "Cathode Current Range (Continuous)",
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          "unit": "mA",
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          "typ": null,
          "max": 150,
          "conditions": "Continuous",
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        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
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          "conditions": "",
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        {
          "name": "Storage Temperature Range",
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          "unit": "°C",
          "min": -65,
          "typ": null,
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          "conditions": "",
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        {
          "name": "Cathode Voltage (recommended)",
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          "typ": null,
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          "min": 1,
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          "conditions": "",
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        {
          "name": "Operating Ambient Temperature Range",
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          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
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          "name": "Junction-to-Ambient Thermal Resistance (SOP-8)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 208,
          "max": null,
          "conditions": "SOP-8 package",
          "source_page": 3,
          "source": "datasheet"
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    "email": "[email protected]"
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