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Ray Set visibility: public 061b438 23d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "tl431bim3",
  "title": "TL431BIM3",
  "brief": "HGSEMI Voltage Reference, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "mpn": "TL431BIM3",
    "manufacturer": "HGSEMI",
    "package": "SOT-23",
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    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603372975064297472",
    "parts": {
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      "lbr": "tl431bim3.lbr"
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    "distributor_links": {
      "lcsc": "C22461605"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T21:53:55Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "CATHODE",
        "type": "passive",
        "description": "Shunt current/voltage input; operating cathode voltage Vref to 36V (37V absolute max) with cathode current 1 mA to 100 mA."
      },
      {
        "number": "2",
        "name": "REF",
        "type": "input",
        "description": "Reference input that sets the threshold relative to the common anode, with nominal Vref of 2495 mV and reference input current of about 2 to 4 µA."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "power_in",
        "description": "Common pin, normally connected to ground."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The page 4 pin-function table is garbled in the extracted text (the SOT-23 column cannot be read cle; Page 4 footnote states 'Pin 2 is attached to Substrate and must be connected to ANODE or left open.'; The datasheet lists ANODE as type O (output). Mapped here to power_in because it is the common groun"
        ],
        "pages_sent": 28,
        "cost_usd": 0.0959,
        "at": "2026-10-17T21:52:09"
      },
      "datasheet": {
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        "pages": 28,
        "sha256": "c01812d54f2dbc3c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "tl431bim3.step",
        "role": "plain",
        "up": "Z",
        "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": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl431bim3-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "097841cda6fb07d6c4e5c78774ad345971b4fcd96491738d5853935d163292de",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOT-23",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "c01812d54f2dbc3cac33c4129366fffe2c202c753250ab5267a650b70a1e8e28",
      "rows": [
        {
          "name": "Reference voltage",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "mV",
          "min": 2483,
          "typ": 2495,
          "max": 2507,
          "conditions": "VKA = Vref, IKA = 10 mA; TA=25°C",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Deviation of reference input voltage over full temperature range",
          "symbol": "VI(dev)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 14,
          "max": 34,
          "conditions": "VKA = Vref, IKA = 10 mA",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Ratio of change in reference voltage to change in cathode voltage (10 V step)",
          "symbol": "ΔVref / ΔVKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -1.4,
          "max": -2.7,
          "conditions": "IKA = 10 mA; ΔVKA = 10 V – Vref",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Ratio of change in reference voltage to change in cathode voltage (36 V – 10 V step)",
          "symbol": "ΔVref / ΔVKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -1,
          "max": -2,
          "conditions": "IKA = 10 mA; ΔVKA = 36 V – 10 V",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Reference input current",
          "symbol": "Iref",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 2,
          "max": 4,
          "conditions": "IKA = 10 mA, R1 = 10 kΩ, R2 = ∞",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Deviation of reference input current over full temperature range",
          "symbol": "II(dev)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.8,
          "max": 2.5,
          "conditions": "IKA = 10 mA, R1 = 10 kΩ, R2 = ∞",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Minimum cathode current for regulation",
          "symbol": "Imin",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.4,
          "max": 0.7,
          "conditions": "VKA = Vref",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Off-state cathode current",
          "symbol": "Ioff",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 0.5,
          "conditions": "VKA = 36 V, Vref = 0",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Dynamic impedance",
          "symbol": "|zKA|",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.2,
          "max": 0.5,
          "conditions": "VKA = Vref, f ≤ 1 kHz, IKA = 1 mA to 100 mA",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Cathode voltage",
          "symbol": "VKA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "Minimum printed as Vref",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Cathode current",
          "symbol": "IKA",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 1,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating free-air temperature (TL43xxI)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "TL43xxI",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Cathode voltage",
          "symbol": "VKA",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 37,
          "conditions": "Footnote (2) applies",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Continuous cathode current range",
          "symbol": "IKA",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -100,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference input current range",
          "symbol": "II(ref)",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -0.05,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating virtual junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Lead temperature (soldering, 10 seconds)",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 245,
          "conditions": "10 seconds",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Electrostatic discharge, human-body model (HBM)",
          "symbol": "V(ESD)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -2000,
          "typ": null,
          "max": 2000,
          "conditions": "Per ANSI/ESDA/JEDEC JS-001",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Electrostatic discharge, charged-device model (CDM)",
          "symbol": "V(ESD)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -1000,
          "typ": null,
          "max": 1000,
          "conditions": "Per JEDEC JESD22-C101",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
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  "sections": [
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    "readme",
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    "info"
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  "discovery_triggers": [
    "tl431bim3"
  ],
  "discovery_pitch": "TL431BIM3 (HGSEMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "visibility": {
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}