TL431IZT

{
  "slug": "tl431izt",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Voltage Reference, TO-92. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "tl431izt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl431izt.kicad_sym",
    "tl431izt.kicad_mod",
    "tl431izt.glb",
    "tl431izt.step",
    "tl431izt.lbr",
    "docs/hero.png",
    "docs/tl431izt-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "TL431IZT",
    "manufacturer": "STMicroelectronics",
    "package": "TO-92",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.st.com/resource/en/datasheet/tl431izt.pdf",
    "parts": {
      "symbol": "tl431izt.kicad_sym",
      "footprint": "tl431izt.kicad_mod",
      "model_3d": "tl431izt-etched.glb",
      "model_3d_plain": "tl431izt.glb",
      "model_3d_step": "tl431izt-etched.step",
      "model_3d_step_plain": "tl431izt.step",
      "lbr": "tl431izt.lbr"
    },
    "distributor_links": {
      "lcsc": "C2156686"
    },
    "pins": [
      {
        "number": "1",
        "name": "Cathode",
        "type": "passive",
        "description": "Cathode (K) terminal of the shunt regulator; operates over a cathode-to-anode voltage of Vref to 36 V and a cathode current range of 1 to 100 mA (absolute max -100 to +150 mA), with typical dynamic impedance 0.22 Ω."
      },
      {
        "number": "2",
        "name": "Anode",
        "type": "passive",
        "description": "Anode (A) terminal of the shunt regulator, forming the return path for the cathode current; cathode-to-anode voltage rating is Vref to 36 V (absolute max 37 V)."
      },
      {
        "number": "3",
        "name": "Ref",
        "type": "input",
        "description": "Reference input to the internal comparator; reference input current range is -0.05 to +10 mA (absolute max) with typical Iref of 1.8 µA, used with external resistor divider to program the output voltage from 2.5 V to 36 V."
      }
    ],
    "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": [],
        "pages_sent": 22,
        "cost_usd": 0.3314,
        "at": "2026-09-23T16:53:12"
      },
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/tl431izt.pdf",
        "pages": 22,
        "sha256": "d174b1869a9d426d",
        "source_tier": "mfr"
      },
      "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": "tl431izt.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          4.83,
          3.745,
          9.8
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl431izt-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          4.83,
          3.745,
          9.8
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "c426c4c6aae422dd408f1e3ae7bdbaba3330301b6bcf75742046c2a5004258c9",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}