AZ431AR-ATRE1

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  "slug": "az431ar-atre1",
  "title": "AZ431AR-ATRE1",
  "brief": "Diodes Incorporated Voltage Reference, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
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    "mpn": "AZ431AR-ATRE1",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-89-3",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.diodes.com/assets/Datasheets/AZ431AR-ATRE1.pdf",
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      {
        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "Reference (feedback) input. Compared internally to the 2.5 V bandgap; when REF exceeds VREF the internal transistor sinks current from cathode to anode. Max reference input current 10 mA absolute, typ input bias 0.7 µA."
      },
      {
        "number": "2",
        "name": "CATHODE",
        "type": "passive",
        "description": "Shunt cathode (K). Sinks the regulation current when REF rises above VREF. Operating cathode voltage VREF to 36 V, cathode current 1 mA to 100 mA (absolute max -100 to 150 mA), off-state leakage 0.05 µA typ."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Shunt anode (A), the common return for the reference and the shunt transistor. Normally tied to the low side of the regulated node (circuit ground in a standard shunt-regulator topology)."
      }
    ],
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        "pages": 19,
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    "pin1": {
      "pad": "1",
      "at": [
        -1.95,
        -1.5
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-89-3@sha256:0b8db9f4a8f2547a",
      "mark": "drawn"
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    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "SOT-89-3",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
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          "name": "Reference Voltage (0.4% grade)",
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        {
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        {
          "name": "Ratio of Change in Reference Voltage to Change in Cathode Voltage (10V to VREF)",
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          "kind": "voltage_coefficient",
          "unit": "mV/V",
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          "kind": "voltage_coefficient",
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          "min": null,
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        {
          "name": "Reference Current",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.7,
          "max": 4,
          "conditions": "IKA = 10mA, R1 = 10kΩ, R2 = ∞",
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          "name": "Deviation of Reference Current Over Full Temperature Range",
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          "kind": "electrical",
          "unit": "µA",
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          "max": 1.2,
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        {
          "name": "Minimum Cathode Current for Regulation",
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          "max": 1,
          "conditions": "VKA = VREF",
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        {
          "name": "Off-state Cathode Current",
          "symbol": "IKA(Off)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.05,
          "max": 1,
          "conditions": "VKA = 36V, VREF = 0",
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        {
          "name": "Dynamic Impedance",
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          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.15,
          "max": 0.5,
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          "name": "Cathode Voltage (absolute maximum)",
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          "name": "Cathode Current Range (Continuous)",
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        },
        {
          "name": "Reference Input Current Range",
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          "unit": "mA",
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          "max": 10,
          "conditions": "",
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        },
        {
          "name": "Power Dissipation (Z, R package)",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 770,
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          "source_page": 4,
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        },
        {
          "name": "ESD (Human Body Model)",
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          "unit": "V",
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          "max": 2000,
          "conditions": "Human Body Model",
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        },
        {
          "name": "Junction Temperature",
          "symbol": "TJ",
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          "unit": "°C",
          "min": null,
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          "conditions": "",
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        {
          "name": "Storage Temperature Range",
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          "unit": "°C",
          "min": -65,
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          "name": "Cathode Voltage (recommended operating)",
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          "name": "Operating Ambient Temperature Range",
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          "typ": null,
          "max": 125,
          "conditions": "",
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          "name": "Thermal Resistance (Junction to Ambient), SOT89",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 165,
          "max": null,
          "conditions": "Junction to ambient, SOT89, as printed in Absolute Maximum Ratings",
          "source_page": 4,
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        {
          "name": "Thermal Resistance (Junction to Case), SOT89",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 29.8,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
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      ]
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  "updated_at": "2026-09-24T17:24:26.111Z"
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