TL431ACDBZT

{
  "slug": "tl431acdbzt",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Voltage Reference, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "tl431acdbzt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl431acdbzt.kicad_sym",
    "tl431acdbzt.kicad_mod",
    "tl431acdbzt.glb",
    "tl431acdbzt.step",
    "tl431acdbzt.lbr",
    "docs/hero.png",
    "docs/tl431acdbzt-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "TL431ACDBZT",
    "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": "tl431acdbzt.kicad_sym",
      "footprint": "tl431acdbzt.kicad_mod",
      "model_3d": "tl431acdbzt-etched.glb",
      "model_3d_plain": "tl431acdbzt.glb",
      "model_3d_step": "tl431acdbzt-etched.step",
      "model_3d_step_plain": "tl431acdbzt.step",
      "lbr": "tl431acdbzt.lbr"
    },
    "distributor_links": {
      "lcsc": "C18814"
    },
    "pins": [
      {
        "number": "1",
        "name": "CATHODE",
        "type": "bidirectional",
        "description": "Shunt regulator current/voltage terminal (I/O); in regulation must be supplied with a cathode current of 1 mA to 100 mA (Imin to max recommended IKA), with cathode voltage up to 36 V (absolute maximum 37 V, current range -100 mA to 150 mA)."
      },
      {
        "number": "2",
        "name": "REF",
        "type": "input",
        "description": "Reference/threshold input relative to the common ANODE pin; internal amplifier compares this pin to the ~2.5 V internal reference and requires a reference input current (typ. 2 µA, max 4-10 µA) to bias the input transistor."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Common pin of the device, normally connected to ground/return; serves as the reference (0 V) node for the CATHODE and REF pin voltages."
      }
    ],
    "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 (CATHODE) type classification: Listed as output based on typical open-collector shunt regulato"
        ],
        "pages_sent": 86,
        "cost_usd": 0.9634,
        "at": "2026-09-23T01:04:18"
      },
      "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"
    },
    "models_3d": [
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        "file": "tl431acdbzt.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3.0,
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        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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        "role": "eda",
        "up": "Z",
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        ],
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        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}