TL431ACDR

{
  "schema_version": 1,
  "type": "component",
  "slug": "tl431acdr",
  "title": "TL431ACDR",
  "brief": "Texas Instruments Voltage Reference, SOIC-8. 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)",
    "tl431acdr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TL431ACDR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tl431",
    "parts": {
      "symbol": "tl431acdr.kicad_sym",
      "footprint": "tl431acdr.kicad_mod",
      "model_3d": "tl431acdr-etched.glb",
      "model_3d_plain": "tl431acdr.glb",
      "model_3d_step": "tl431acdr-etched.step",
      "model_3d_step_plain": "tl431acdr.step",
      "lbr": "tl431acdr.lbr"
    },
    "distributor_links": {
      "lcsc": "C67475"
    },
    "pins": [
      {
        "number": "1",
        "name": "CATHODE",
        "type": "bidirectional",
        "description": "Programmable output pin that regulates voltage from Vref (2.495V nominal) to 36V and sinks cathode current in the range of 1mA to 100mA."
      },
      {
        "number": "2",
        "name": "ANODE",
        "type": "power_in",
        "description": "Common return and ground reference pin for the device."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "power_in",
        "description": "Common return and ground reference pin for the device."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "6",
        "name": "ANODE",
        "type": "power_in",
        "description": "Common return and ground reference pin for the device."
      },
      {
        "number": "7",
        "name": "ANODE",
        "type": "power_in",
        "description": "Common return and ground reference pin for the device."
      },
      {
        "number": "8",
        "name": "REF",
        "type": "input",
        "description": "Reference voltage input pin; typically biased to Vref = 2.495V (±0.5% to ±2% depending on grade) and requires reference current of 2µA to 4µA from external bias network."
      }
    ],
    "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: Multiple ANODE pins (2, 3, 6, 7) serve identical function for thermal distribution and current-sinki; NC (no connection) pins are present in an 8-pin package where the device functionally uses only 3 si"
        ],
        "pages_sent": 86,
        "cost_usd": 0.6764,
        "at": "2026-09-17T22:35:59"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tl431",
        "pages": 86,
        "sha256": "0eb18c491f5517a3",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tl431acdr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl431acdr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c1b05bf3a9309b0c3f24b4424f9ef74624ec448b0a326317b53c04ffcc5aef4a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tl431acdr"
  ],
  "discovery_pitch": "TL431ACDR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl431acdr.kicad_sym",
    "tl431acdr.kicad_mod",
    "tl431acdr.glb",
    "tl431acdr.step",
    "tl431acdr.lbr",
    "docs/hero.png",
    "docs/tl431acdr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T09:54:34.453Z"
}