TL431AIDBVR

{
  "slug": "tl431aidbvr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Voltage Reference, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "tl431aidbvr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl431aidbvr.kicad_sym",
    "tl431aidbvr.kicad_mod",
    "tl431aidbvr.glb",
    "tl431aidbvr.step",
    "tl431aidbvr.lbr",
    "docs/hero.png",
    "docs/tl431aidbvr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "TL431AIDBVR",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tl431",
    "parts": {
      "symbol": "tl431aidbvr.kicad_sym",
      "footprint": "tl431aidbvr.kicad_mod",
      "model_3d": "tl431aidbvr-etched.glb",
      "model_3d_plain": "tl431aidbvr.glb",
      "model_3d_step": "tl431aidbvr-etched.step",
      "model_3d_step_plain": "tl431aidbvr.step",
      "lbr": "tl431aidbvr.lbr"
    },
    "distributor_links": {
      "lcsc": "C144392"
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection on the TL431/TL431A/TL431B DBV (SOT-23-5) package pinout."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection, but this pin is attached to the die substrate; the datasheet states it must be connected to ANODE or left open."
      },
      {
        "number": "3",
        "name": "CATHODE",
        "type": "bidirectional",
        "description": "Shunt current/voltage (I/O) terminal of the regulator; recommended continuous cathode current range is 1 mA to 100 mA (absolute maximum -100 mA to 150 mA) with cathode voltage up to 37 V absolute maximum (36 V recommended maximum)."
      },
      {
        "number": "4",
        "name": "REF",
        "type": "input",
        "description": "Reference input threshold voltage relative to the common ANODE pin; must be driven with a reference input current (typical 2 µA, max 4 µA) and is internally regulated to approximately 2.5 V (Vref = 2440-2550 mV typical range) in closed-loop operation."
      },
      {
        "number": "5",
        "name": "ANODE",
        "type": "power_in",
        "description": "Common pin of the device, described in the datasheet as typically connected to ground (通常接地); serves as the reference/return terminal for the cathode current and reference voltage."
      }
    ],
    "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-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin 2 substrate connection behavior: datasheet states it 'must be connected to ANODE or left open' w"
        ],
        "pages_sent": 86,
        "cost_usd": 1.1615,
        "at": "2026-09-22T19:14:40"
      },
      "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": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tl431aidbvr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl431aidbvr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "8f9702fbe17efdff101ff0c2e30447965a4a2df3c159da6561d44fb4387f9cbf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  }
}