TL431ATA

{
  "slug": "tl431ata",
  "version": "0.1.0",
  "type": "component",
  "description": "HTC Korea TAEJIN Tech Voltage Reference, TO-92-2.54mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "tl431ata",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl431ata.kicad_sym",
    "tl431ata.kicad_mod",
    "tl431ata.glb",
    "tl431ata.step",
    "tl431ata.lbr",
    "docs/hero.png",
    "docs/tl431ata-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tl431ata-hero.glb",
    "tl431ata-hero.overlay.json",
    "tl431ata-etched.glb"
  ],
  "component": {
    "mpn": "TL431ATA",
    "manufacturer": "HTC Korea TAEJIN Tech",
    "package": "TO-92-2.54mm",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588895114546040832",
    "parts": {
      "symbol": "tl431ata.kicad_sym",
      "footprint": "tl431ata.kicad_mod",
      "model_3d": "tl431ata-hero.glb",
      "model_3d_plain": "tl431ata-etched.glb",
      "model_3d_step": "tl431ata-etched.step",
      "model_3d_step_plain": "tl431ata.step",
      "lbr": "tl431ata.lbr"
    },
    "distributor_links": {
      "lcsc": "C262797"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T21:58:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Reference",
        "type": "passive",
        "description": "Reference voltage input (VREF, approx. 2.5 V, 2.495 V typical for the TL431A) that the internal error amplifier regulates against."
      },
      {
        "number": "2",
        "name": "Anode",
        "type": "power_in",
        "description": "Listed as Ground in the pin description table; it is the common return of the shunt regulator."
      },
      {
        "number": "3",
        "name": "Cathode",
        "type": "input",
        "description": "Cathode is the regulated output and is listed as Input Supply Voltage; recommended VKA is VREF to 40 V with cathode current IK of 0.5 to 100 mA (absolute maximum VKA 42 V)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Package match: the ordering table on page 2 lists TL431ATA as TO-92 supplied on Tape (marking TL431-; Pin 2 type is an interpretation: the datasheet names pin 2 'Anode' and its function 'Ground'. I mapp; Pin 3 is labelled 'Input Supply Voltage' in the function column but is the cathode of a shunt regula"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0347,
        "at": "2026-10-18T21:56:36"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588895114546040832",
        "pages": 12,
        "sha256": "66b4ce853f1e463b",
        "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": "tl431ata.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl431ata-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": "df60710ea151b9a08570dcb7a8b20c9b747dc2f7bce1ded69ee068566af7e293",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}