ME431AXG

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  "slug": "me431axg",
  "title": "ME431AXG",
  "brief": "MICRONE Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "ME431AXG",
    "manufacturer": "MICRONE",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/2b11b9ac5e97405692cef1585ecbf54d.pdf",
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        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "Reference input to the internal error amplifier. Compared against the internal 2.5 V bandgap (VREF); the regulator sinks cathode current to hold REF equal to VREF. Typical reference current 0.7 µA (max 3 µA); absolute max input current 10 mA."
      },
      {
        "number": "2",
        "name": "CATHODE",
        "type": "passive",
        "description": "Regulator cathode. Sinks up to 100 mA (max 130 mA) from the rail being regulated; recommended operating VKA from VREF to 36 V (absolute max 40 V). Off-state cathode leakage ≤0.3 µA at VKA=36 V."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Regulator anode. Return terminal for cathode current; tied to the low side of the divider / system ground in a shunt-regulator topology."
      }
    ],
    "provenance": {
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "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"
    },
    "models_3d": [
      {
        "file": "me431axg.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "MICRONE",
      "Package": "SOT-23",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "9c5f9f93004c53ee",
      "rows": [
        {
          "name": "Cathode voltage (recommended operating)",
          "symbol": "VKA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "",
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        },
        {
          "name": "Cathode current (recommended operating)",
          "symbol": "IKA",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 1,
          "typ": null,
          "max": 100,
          "conditions": "",
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        },
        {
          "name": "Operating ambient temperature range",
          "symbol": "TA",
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          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
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          "max": 40,
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        {
          "name": "Cathode current range (absolute maximum)",
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          "typ": null,
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        },
        {
          "name": "Reference input current range (absolute maximum)",
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        {
          "name": "Power dissipation, SOT23 package (absolute maximum)",
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          "max": 370,
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        },
        {
          "name": "Junction temperature (absolute maximum)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 160,
          "conditions": "",
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        },
        {
          "name": "Storage temperature range (absolute maximum)",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Reference voltage, 0.4% grade",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 2.49,
          "typ": 2.5,
          "max": 2.51,
          "conditions": "VKA=VREF, IKA=10mA",
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        },
        {
          "name": "Reference voltage, 1.0% grade",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 2.475,
          "typ": 2.5,
          "max": 2.525,
          "conditions": "VKA=VREF, IKA=10mA",
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        },
        {
          "name": "Deviation of reference voltage over temperature, 0 to 70℃",
          "symbol": "∆VREF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 3,
          "max": 10,
          "conditions": "VKA=VREF, IKA=10mA",
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        {
          "name": "Deviation of reference voltage over temperature, -40 to 150℃",
          "symbol": "∆VREF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 3,
          "max": 15,
          "conditions": "VKA=VREF, IKA=10mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Dynamic impedance",
          "symbol": "KA |Z|",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.15,
          "max": 0.5,
          "conditions": "VKA=VREF, IKA=1 to 100mA, f≤1.0KHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum cathode current for regulation",
          "symbol": "IKA (MIN)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.4,
          "max": 1,
          "conditions": "VKA=VREF",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Ratio of change in reference voltage to change in cathode voltage, ΔVKA=10V to VREF",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -0.8,
          "max": -2.5,
          "conditions": "IKA=10mA, ΔVKA=10V to VREF",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Ratio of change in reference voltage to change in cathode voltage, ΔVKA=36V to 10V",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -0.6,
          "max": -1.5,
          "conditions": "IKA=10mA, ΔVKA=36V to 10V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reference current",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.7,
          "max": 3,
          "conditions": "IKA=10mA, R1=10KΩ, R2=∝",
          "source_page": 3,
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        },
        {
          "name": "Deviation of reference current over full temperature range",
          "symbol": "∆IREF",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.1,
          "max": 1.2,
          "conditions": "IKA=10mA, R1=10KΩ, R2=∝, TA=40 to 150℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Off-state cathode current",
          "symbol": "IKA (OFF)",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.03,
          "max": 0.3,
          "conditions": "VKA=36V, VREF=0",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-to-ambient, SOT23-3 package",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": null,
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          "conditions": "SOT23-3 package",
          "source_page": 2,
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          "name": "Thermal resistance junction-to-ambient, SOT23 package",
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          "unit": "℃/W",
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          "typ": null,
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          "conditions": "SOT23 package",
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  "variants": [
    {
      "mpn": "ME431AXG",
      "kind": "packaging"
    },
    {
      "mpn": "ME431AXGBXG",
      "kind": "packaging"
    },
    {
      "mpn": "ME431AXGAM3G",
      "kind": "packaging"
    },
    {
      "mpn": "ME431AXGBM3G",
      "kind": "packaging"
    },
    {
      "mpn": "ME431AXGATG",
      "kind": "packaging"
    },
    {
      "mpn": "ME431AXGBTG",
      "kind": "packaging"
    },
    {
      "mpn": "ME431AXGATBG",
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  "updated_at": "2026-09-25T01:40:35.976Z"
}