TL431-A

{
  "slug": "tl431-a",
  "version": "0.1.0",
  "type": "component",
  "description": "Foshan Blue Rocket Elec Voltage References, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "tl431-a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl431-a.kicad_sym",
    "tl431-a.kicad_mod",
    "tl431-a.glb",
    "tl431-a.step",
    "tl431-a.lbr",
    "docs/hero.png",
    "docs/tl431-a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tl431-a-hero.glb",
    "tl431-a-hero.overlay.json",
    "tl431-a-etched.glb"
  ],
  "component": {
    "mpn": "TL431-A",
    "manufacturer": "Foshan Blue Rocket Elec",
    "package": "TO-92-3",
    "pin_count": 3,
    "category": "Power Management ICs",
    "subcategory": "Voltage References",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/4773dc5c5769a9f744add98098d220f5.pdf",
    "parts": {
      "symbol": "tl431-a.kicad_sym",
      "footprint": "tl431-a.kicad_mod",
      "model_3d": "tl431-a-hero.glb",
      "model_3d_plain": "tl431-a-etched.glb",
      "model_3d_step": "tl431-a-etched.step",
      "model_3d_step_plain": "tl431-a.step",
      "lbr": "tl431-a.lbr"
    },
    "distributor_links": {
      "lcsc": "C2844070"
    },
    "distributor_check": {
      "checked_at": "2026-11-08T00:38:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode of the shunt regulator; sinks 1.0mA to 100mA continuous, with VKA up to 37V maximum."
      },
      {
        "number": "2",
        "name": "A",
        "type": "power_in",
        "description": "Anode of the shunt regulator, normally connected to the lowest potential (ground) in the circuit."
      },
      {
        "number": "3",
        "name": "R",
        "type": "input",
        "description": "Reference input with VREF of 2.495V typical and reference input current range of 0.05 to 10mA maximum."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin assignments come from the text line 'PIN1：K PIN 2：A PIN 3：R' on page 1. A stray '1 3 2' in the p; The anode is typed power_in because it is the ground-side terminal. The datasheet does not describe "
        ],
        "pages_sent": 7,
        "cost_usd": 0.0246,
        "at": "2026-11-08T00:38:16"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/4773dc5c5769a9f744add98098d220f5.pdf",
        "pages": 7,
        "sha256": "988f22243a741330",
        "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": "tl431-a.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": "2026-11-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl431-a-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": "14a6e7556e50cd35c622f865389965cd1a132ec2f06ab2e501313179c46b71af",
        "checked": "2026-11-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}