ASPL431AZA-R

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  "title": "ASPL431AZA-R",
  "brief": "ASDsemi Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "mpn": "ASPL431AZA-R",
    "manufacturer": "ASDsemi",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2212191030_ASDsemi-ASPL431AZA-R_C5244140.pdf",
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    "pins": [
      {
        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "Reference / feedback input to the internal error amplifier. Compared against the internal 2.5 V bandgap reference to regulate the cathode voltage. Typical reference current 0.3 uA (0.6 uA max); absolute maximum input current 10 mA."
      },
      {
        "number": "2",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode (K) terminal of the shunt regulator. Sinks the regulated current to the anode when the REF voltage exceeds VREF (2.5 V). Recommended operating cathode voltage VREF to 36 V; sink current 0.2 mA to 100 mA; absolute maximum 40 V and +/-100..150 mA."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode (A) terminal of the shunt regulator; the return / ground-side terminal of the internal shunt path. Typically tied to circuit ground in a shunt-regulator configuration."
      }
    ],
    "provenance": {
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        "pages": 13,
        "sha256": "fac3b148060f40c4",
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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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      "footprint": "viewers/footprint.html"
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        "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": "ASDsemi",
      "Package": "SOT-23",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
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          "name": "Cathode Voltage",
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          "max": 40,
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        {
          "name": "Cathode Current Range (Continuous)",
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          "unit": "mA",
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          "typ": null,
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        {
          "name": "Reference Input Current Range",
          "symbol": "IREF",
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          "unit": "mA",
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        {
          "name": "Power Dissipation (Z, R Package)",
          "symbol": "PD",
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          "unit": "mW",
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        {
          "name": "Junction Temperature",
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          "unit": "°C",
          "min": null,
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        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
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        {
          "name": "ESD (Human Body Model)",
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          "unit": "V",
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          "typ": null,
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        },
        {
          "name": "Thermal Resistance (Junction to Ambient), SOT23",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 380,
          "conditions": "SOT23",
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          "name": "Cathode Voltage (max)",
          "symbol": "VKA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "Minimum printed as VREF (symbol, not a number)",
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        {
          "name": "Cathode Current",
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          "unit": "mA",
          "min": 0.2,
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          "max": 100,
          "conditions": "",
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        },
        {
          "name": "Operating Ambient Temperature Range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -25,
          "typ": null,
          "max": 125,
          "conditions": "",
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        },
        {
          "name": "Reference Voltage (0.8% grade)",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 2.48,
          "typ": 2.5,
          "max": 2.52,
          "conditions": "0.8% grade; VKA = VREF, IKA = 10mA; TA = +25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Voltage Over Full Temperature Range",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": -5,
          "max": -20,
          "conditions": "VKA = VREF, IKA = 10mA, -20 to +110°C",
          "source_page": 5,
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        },
        {
          "name": "Reference Current",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.3,
          "max": 0.6,
          "conditions": "IKA = 10mA, R1 = 10kΩ, R2 = ∞",
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          "source": "datasheet"
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        {
          "name": "Deviation of Reference Current Over Full Temperature Range",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.2,
          "max": 0.3,
          "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": 0.15,
          "max": 0.4,
          "conditions": "VKA = VREF",
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        },
        {
          "name": "Off-state Cathode Current",
          "symbol": "IKA(Off)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.01,
          "max": 1,
          "conditions": "VKA = 36V, VREF = 0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dynamic Impedance",
          "symbol": "ZKA",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.1,
          "max": 0.5,
          "conditions": "VKA = VREF, IKA = 1 to 100mA, f ≤ 1.0kHz",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Ratio of Change in Reference Voltage to Change in Cathode Voltage",
          "symbol": "VREF/VKA",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -1.87,
          "max": null,
          "conditions": "IKA = 10mA, VKA = 10V to VREF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Ratio of Change in Reference Voltage to Change in Cathode Voltage",
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          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -1.38,
          "max": null,
          "conditions": "IKA = 10mA, VKA = 36V to 10V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance (Junction to Case), SOT23",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 113,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        }
      ]
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  "updated_at": "2026-09-24T17:00:55.593Z"
}