AS431HMBNTR-G1

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  "slug": "as431hmbntr-g1",
  "title": "AS431HMBNTR-G1",
  "brief": "Diodes Incorporated Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
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    "mpn": "AS431HMBNTR-G1",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2201110200_Diodes-Incorporated-AS431HMBNTR-G1_C2157678.pdf",
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      {
        "number": "1",
        "name": "CATHODE",
        "type": "passive",
        "description": "Shunt regulator cathode. Sinks 0.5 mA to 100 mA, absolute-max cathode voltage 40 V (recommended max 36 V). Dynamic impedance ~0.15 Ω typ. In the mirror pin-out (AS431HM...), pin 1 is CATHODE (vs. REF in the normal pin-out)."
      },
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        "number": "2",
        "name": "REF",
        "type": "input",
        "description": "Reference (feedback) input. Internally compared against the 2.495 V bandgap reference; tie via a resistor divider from cathode to set the regulated cathode voltage between VREF and 36 V. Reference input current ~0.7 µA typ (4 µA max), IREF absolute max 10 mA."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Shunt regulator anode (return / ground for the shunt current path). Cathode current returns through this pin."
      }
    ],
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        "pages": null,
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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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    "viewers": {
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "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": "Reference Voltage (1.0% tolerance)",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 2.47,
          "typ": 2.495,
          "max": 2.52,
          "conditions": "VKA = VREF, IKA = 10mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Voltage Over Full Temperature Range",
          "symbol": "ΔVREF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 8,
          "conditions": "VKA = VREF, IKA = 10mA, 0 to +70°C",
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        },
        {
          "name": "Deviation of Reference Voltage Over Full Temperature Range",
          "symbol": "ΔVREF",
          "kind": "electrical",
          "unit": "mV",
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          "typ": 5,
          "max": 14,
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        {
          "name": "Deviation of Reference Voltage Over Full Temperature Range",
          "symbol": "ΔVREF",
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          "max": 16,
          "conditions": "VKA = VREF, IKA = 10mA, -40 to +125°C",
          "source_page": 5,
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        },
        {
          "name": "Ratio of Change in Reference Voltage to Change in Cathode Voltage",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -1,
          "max": -2.7,
          "conditions": "IKA = 10mA, ΔVKA = 10V to VREF",
          "source_page": 5,
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        },
        {
          "name": "Ratio of Change in Reference Voltage to Change in Cathode Voltage",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -0.5,
          "max": -2,
          "conditions": "IKA = 10mA, ΔVKA = 36V to 10V",
          "source_page": 5,
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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 = ∞",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Current Over Full Temperature Range",
          "symbol": "ΔIREF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.4,
          "max": 1.2,
          "conditions": "IKA = 10mA, R1 = 10kΩ, R2 = ∞, TA = -40 to +125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum Cathode Current for Regulation",
          "symbol": "IKA(Min)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.35,
          "max": 0.5,
          "conditions": "VKA = VREF",
          "source_page": 5,
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        },
        {
          "name": "Off-state Cathode Current",
          "symbol": "IKA(Off)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.002,
          "max": 0.5,
          "conditions": "VKA = 36V, VREF = 0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dynamic Impedance",
          "symbol": "ZKA",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.15,
          "max": 0.5,
          "conditions": "VKA = VREF, IKA = 0.5 to 100mA, f ≤ 1.0KHz",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Cathode Voltage (absolute maximum)",
          "symbol": "VKA",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
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        },
        {
          "name": "Cathode Current Range (Continuous) (absolute maximum)",
          "symbol": "IKA",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -100,
          "typ": null,
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          "conditions": "Continuous",
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        },
        {
          "name": "Reference Input Current Range (absolute maximum)",
          "symbol": "IREF",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Junction Temperature (absolute maximum)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Storage Temperature Range (absolute maximum)",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "ESD Human Body Model (absolute maximum)",
          "symbol": "ESD",
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          "unit": "V",
          "min": null,
          "typ": null,
          "max": 2000,
          "conditions": "Human Body Model",
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        },
        {
          "name": "Cathode Voltage (recommended operating)",
          "symbol": "VKA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "Min printed as VREF",
          "source_page": 4,
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        {
          "name": "Cathode Current (recommended operating)",
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        {
          "name": "Operating Ambient Temperature Range (recommended operating)",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
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        {
          "name": "Thermal Resistance Junction-to-Ambient, SOT23 (absolute maximum table)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 380,
          "max": null,
          "conditions": "SOT23",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Thermal Resistance Junction-to-Case, SOT23",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 136,
          "max": null,
          "conditions": "SOT23",
          "source_page": 5,
          "source": "datasheet"
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    {
      "mpn": "AS431HMBNTR-G1AZTR-G1",
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      "mpn": "AS431HMBNTR-G1BZTR-G1",
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