TL431AQDBZR

{
  "slug": "tl431aqdbzr",
  "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)",
    "tl431aqdbzr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl431aqdbzr.kicad_sym",
    "tl431aqdbzr.kicad_mod",
    "tl431aqdbzr.glb",
    "tl431aqdbzr.step",
    "tl431aqdbzr.lbr",
    "docs/hero.png",
    "docs/tl431aqdbzr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "TL431AQDBZR",
    "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": "tl431aqdbzr.kicad_sym",
      "footprint": "tl431aqdbzr.kicad_mod",
      "model_3d": "tl431aqdbzr-etched.glb",
      "model_3d_plain": "tl431aqdbzr.glb",
      "model_3d_step": "tl431aqdbzr-etched.step",
      "model_3d_step_plain": "tl431aqdbzr.step",
      "lbr": "tl431aqdbzr.lbr"
    },
    "distributor_links": {
      "lcsc": "C105255"
    },
    "pins": [
      {
        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "Reference/threshold input pin with internal 2.495V reference; requires minimum 2µA input bias current and connects to external resistor divider network that programs the output voltage."
      },
      {
        "number": "2",
        "name": "CATHODE",
        "type": "output",
        "description": "Cathode regulated output pin that maintains programmable voltage from Vref to 36V; requires minimum 0.4mA operating current for regulation and supports up to 100mA sink capability."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "power_in",
        "description": "Anode common/ground pin; device reference node for voltage regulation and current operation, typically connected to system ground or negative supply."
      }
    ],
    "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: CATHODE pin type could alternatively be classified as 'tri_state' rather than 'output' since in open"
        ],
        "pages_sent": 86,
        "cost_usd": 0.7275,
        "at": "2026-09-18T00:34:45"
      },
      "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": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tl431aqdbzr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "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)"
      },
      {
        "file": "tl431aqdbzr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "01fdee56ea461f94e567fe1001e7bd44788b9d15678dacbe2754974fe5d4b1af",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}