TL431BQDBZT

{
  "schema_version": 1,
  "type": "component",
  "slug": "tl431bqdbzt",
  "title": "TL431BQDBZT",
  "brief": "Texas Instruments Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "tl431bqdbzt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TL431BQDBZT",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tl431",
    "parts": {
      "symbol": "tl431bqdbzt.kicad_sym",
      "footprint": "tl431bqdbzt.kicad_mod",
      "model_3d": "tl431bqdbzt-etched.glb",
      "model_3d_plain": "tl431bqdbzt.glb",
      "model_3d_step": "tl431bqdbzt-etched.step",
      "model_3d_step_plain": "tl431bqdbzt.step",
      "lbr": "tl431bqdbzt.lbr"
    },
    "distributor_links": {
      "lcsc": "C2864384",
      "digikey": "296-26715-2-ND",
      "mouser": "595-TL431BQDBZT"
    },
    "distributor_check": {
      "checked_at": "2026-09-27T08:32:52Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-26715-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-TL431BQDBZT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CATHODE",
        "type": "passive",
        "description": "Shunt regulator cathode (K); operating VKA range Vref to 36 V, IKA 1 mA to 100 mA continuous; absolute maximum VKA 37 V, IKA 150 mA."
      },
      {
        "number": "2",
        "name": "REF",
        "type": "input",
        "description": "Voltage-feedback reference input to internal comparator; nominal threshold Vref = 2.495 V typ (2.483 V min, 2.507 V max for B grade); requires Iref 2 µA typ, 4 µA max at IKA = 10 mA."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "power_in",
        "description": "Common anode (GND) return terminal; all device voltages are referenced to this pin; normally connected to circuit ground."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin assignment differs between TL431 and TL432 variants in SOT-23-3 package: TL431 has REF on pin 1,; CATHODE and ANODE are non-standard nomenclature but are the official terminal designations for this "
        ],
        "pages_sent": 86,
        "cost_usd": 0.7064,
        "at": "2026-09-27T08:32:37"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tl431",
        "pages": 86,
        "sha256": "313277b9351e61ed",
        "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"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tl431bqdbzt"
  ],
  "discovery_pitch": "TL431BQDBZT (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl431bqdbzt.kicad_sym",
    "tl431bqdbzt.kicad_mod",
    "tl431bqdbzt.glb",
    "tl431bqdbzt.step",
    "tl431bqdbzt.lbr",
    "docs/hero.png",
    "docs/tl431bqdbzt-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  }
}