AZ431LBNTR-G1

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  "title": "AZ431LBNTR-G1",
  "brief": "Diodes Incorporated Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
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    "mpn": "AZ431LBNTR-G1",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
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      "lcsc": "C154868"
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    "pins": [
      {
        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "Reference input to the internal error amplifier (non-inverting node compared to the internal 1.240V bandgap). Typically tied to the R1/R2 divider from CATHODE to set Vout = (1 + R1/R2) * VREF. Reference input current IREF ~0.15 uA typ (0.4 uA max)."
      },
      {
        "number": "2",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode of the shunt regulator (equivalent to a zener cathode). Sinks the regulated shunt current IKA from 0.1 mA up to 100 mA; absolute-max VKA = 20 V, recommended VKA = VREF to 18 V. Dynamic impedance ~0.05 ohm typ at 1 kHz."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode of the shunt regulator, the common return terminal usually connected to circuit ground / the low side of the resistor divider. Return path for the cathode shunt current."
      }
    ],
    "provenance": {
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        "pages": 19,
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      "pins": {
        "total": 3,
        "described": 3,
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        "refuses_to_fabricate": true
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    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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    "pin1": {
      "pad": "1",
      "at": [
        -0.9375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23@sha256:0d88c86c1b6d8c1a",
      "mark": "drawn"
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    "models_3d": [
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
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        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "SOT-23",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
        {
          "name": "Cathode Voltage (absolute maximum)",
          "symbol": "VKA",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
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        },
        {
          "name": "Cathode Current Range (Continuous)",
          "symbol": "IKA",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -100,
          "typ": null,
          "max": 100,
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        {
          "name": "Reference Input Current Range",
          "symbol": "IREF",
          "kind": "absolute_maximum",
          "unit": "mA",
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          "max": 10,
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        {
          "name": "Junction Temperature",
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          "unit": "°C",
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        {
          "name": "Storage Temperature Range",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
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        {
          "name": "Cathode Voltage (recommended)",
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        {
          "name": "Cathode Current (recommended)",
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        {
          "name": "Operating Ambient Temperature Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
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        },
        {
          "name": "Reference Voltage (1.0% grade)",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.228,
          "typ": 1.24,
          "max": 1.252,
          "conditions": "VKA = VREF, IKA = 10mA; TA = +25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Voltage Over Full Temperature Range (0°C to +70°C)",
          "symbol": "ΔVREF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 2,
          "max": 10,
          "conditions": "VKA = VREF, IKA = 10mA; 0°C to +70°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Voltage Over Full Temperature Range (-40°C to +85°C)",
          "symbol": "ΔVREF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 3,
          "max": 10,
          "conditions": "VKA = VREF, IKA = 10mA; -40°C to +85°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Voltage Over Full Temperature Range (-40°C to +125°C)",
          "symbol": "ΔVREF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 4,
          "max": 15,
          "conditions": "VKA = VREF, IKA = 10mA; -40°C to +125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Ratio of Change in VREF to the Change in Cathode Voltage",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -0.5,
          "max": -1.5,
          "conditions": "IKA = 10mA; ΔVKA: VREF to 16V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference Input Current",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.15,
          "max": 0.4,
          "conditions": "IKA = 10mA, R1 = 10kΩ, R2 = ∞",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Current Over Full Temperature Range",
          "symbol": "ΔIREF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 0.4,
          "conditions": "IKA = 10mA, R1 = 10kΩ, R2 = ∞, TA = -40°C to +125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum Cathode Current for Regulation",
          "symbol": "IKA(Min)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 55,
          "max": 80,
          "conditions": "VKA = VREF",
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          "source": "datasheet"
        },
        {
          "name": "Off-State Cathode Current",
          "symbol": "IKA(Off)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.04,
          "max": 0.1,
          "conditions": "VREF = 0, VKA = 18V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Off-State Cathode Current",
          "symbol": "IKA(Off)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.01,
          "max": 0.05,
          "conditions": "VKA = 6, VREF = 0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dynamic Impedance",
          "symbol": "ZKA",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
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          "max": 0.15,
          "conditions": "VKA = VREF, IKA = 1 to 100mA, f ≤ 1.0kHz",
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          "name": "Equivalent Full-Range Temperature Coefficient",
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          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
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        },
        {
          "name": "Thermal Resistance (SOT23)",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 84.84,
          "max": null,
          "conditions": "",
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  "updated_at": "2026-09-24T17:25:21.026Z"
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