ME431NAXG

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  "title": "ME431NAXG",
  "brief": "MICRONE Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
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    "mpn": "ME431NAXG",
    "manufacturer": "MICRONE",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
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    "distributor_links": {
      "lcsc": "C427585"
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    "pins": [
      {
        "number": "1",
        "name": "A",
        "type": "passive",
        "description": "Anode terminal of the shunt regulator (system ground / low side of the internal shunt element). Sinks the regulated cathode current back to the return rail."
      },
      {
        "number": "2",
        "name": "K",
        "type": "passive",
        "description": "Cathode terminal of the shunt regulator (high side). Sinks 1 mA to 100 mA when the reference conducts; withstands up to 36 V (abs-max 40 V) with respect to the anode."
      },
      {
        "number": "3",
        "name": "REF",
        "type": "input",
        "description": "Reference / control input to the internal error amplifier's non-inverting input. Regulates the cathode-anode voltage such that V(REF) = VREF (typ. 2.500 V, ±0.4% for the 'A' grade). Reference input current 0.7 µA typ (3 µA max); abs-max IREF = 10 mA."
      }
    ],
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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": [
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        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23@sha256:0d88c86c1b6d8c1a",
      "mark": "drawn"
    },
    "models_3d": [
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        "file": "me431naxg.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3,
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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",
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      "rows": [
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          "max": 40,
          "conditions": "",
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        {
          "name": "Cathode current range (continuous)",
          "symbol": "IKA",
          "kind": "absolute_maximum",
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          "min": -100,
          "typ": null,
          "max": 130,
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        {
          "name": "Reference input current range",
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          "unit": "mA",
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          "max": 10,
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        {
          "name": "Power dissipation (SOT23 package)",
          "symbol": "PD",
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          "unit": "mW",
          "min": null,
          "typ": null,
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          "name": "Junction temperature",
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          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
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          "max": 160,
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        {
          "name": "Storage temperature range",
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          "unit": "℃",
          "min": -65,
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        {
          "name": "Package thermal impedance (SOT23 package)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "℃/W",
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          "name": "Cathode voltage",
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          "conditions": "Minimum printed as VREF",
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        {
          "name": "Cathode current",
          "symbol": "IKA",
          "kind": "recommended_operating",
          "unit": "mA",
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        },
        {
          "name": "Operating ambient temperature range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
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        {
          "name": "Reference voltage (0.4% grade)",
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          "kind": "electrical",
          "unit": "V",
          "min": 2.49,
          "typ": 2.5,
          "max": 2.51,
          "conditions": "VKA=VREF, IKA=10mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Deviation of reference voltage over temperature (0 to 70℃)",
          "symbol": "ΔVREF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 7,
          "max": 10,
          "conditions": "VKA=VREF, IKA=10mA, 0 to 70℃",
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        {
          "name": "Deviation of reference voltage over temperature (-40 to 150℃)",
          "symbol": "ΔVREF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 25,
          "max": 30,
          "conditions": "VKA=VREF, IKA=10mA, -40 to 150℃",
          "source_page": 5,
          "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": 5,
          "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",
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        },
        {
          "name": "Ratio of change in reference voltage to change in cathode voltage (ΔVKA = 10V to VREF)",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -0.8,
          "max": -2.5,
          "conditions": "IKA=10mA, ΔVKA=10V to VREF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Ratio of change in reference voltage to change in cathode voltage (ΔVKA = 36V to 10V)",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -0.6,
          "max": -1.5,
          "conditions": "IKA=10mA, ΔVKA=36V to 10V",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Reference current",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
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          "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": 1.2,
          "conditions": "IKA=10mA, R1=10KΩ, R2=∝, TA=40 to 150℃",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Off-state cathode current",
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          "kind": "electrical",
          "unit": "μA",
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          "typ": 0.03,
          "max": 0.3,
          "conditions": "VKA=36V, VREF=0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage tolerance (ME431NAXG, suffix A)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.4,
          "typ": null,
          "max": 0.4,
          "conditions": "VREF=2.5V±0.4%",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Equivalent full-range temperature coefficient",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "ppm/℃",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "Equivalent full-range, typical (features list)",
          "source_page": 1,
          "source": "datasheet"
        }
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      "mpn": "ME431NAXG",
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    {
      "mpn": "ME431NAXGNBXG",
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  "updated_at": "2026-09-25T01:40:52.633Z"
}