main
Ray Set visibility: public f56d06a 17d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "tl431am",
  "title": "TL431AM",
  "brief": "HGSEMI Voltage Reference, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "tl431am",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TL431AM",
    "manufacturer": "HGSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757704202006990848",
    "parts": {
      "symbol": "tl431am.kicad_sym",
      "footprint": "tl431am.kicad_mod",
      "model_3d": "tl431am-hero.glb",
      "model_3d_plain": "tl431am-etched.glb",
      "model_3d_step": "tl431am-etched.step",
      "model_3d_step_plain": "tl431am.step",
      "lbr": "tl431am.lbr"
    },
    "distributor_links": {
      "lcsc": "C725318"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T00:59:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode of the shunt regulator; operating cathode voltage from VREF up to 36V (absolute max 36V) and cathode current 0.2 to 100mA."
      },
      {
        "number": "2",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode of the shunt regulator, normally connected to ground; internally tied to the other ANODE pins."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode of the shunt regulator, normally connected to ground; internally tied to the other ANODE pins."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "6",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode of the shunt regulator, normally connected to ground; internally tied to the other ANODE pins."
      },
      {
        "number": "7",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode of the shunt regulator, normally connected to ground; internally tied to the other ANODE pins."
      },
      {
        "number": "8",
        "name": "REF",
        "type": "input",
        "description": "Reference input that sets the cathode voltage via the divider, with a 2.470V to 2.520V reference (1.0% TL431A grade) and absolute max reference current of 10mA."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Datasheet only labels the pins by name; the ANODE pins are drawn as separate leads (2, 3, 6, 7) and ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 13,
        "cost_usd": 0.2435,
        "at": "2026-10-18T00:56:56"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757704202006990848",
        "pages": 13,
        "sha256": "4e52f2b24a7cd4f5",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tl431am.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl431am-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "63b699db3f984f49911f8f30331c5b3b0db65fdb7468412efab4e0187ee1dc9e",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4e52f2b24a7cd4f5829a9d774a3db3b646912078bfba0338661c80544f809a71",
      "rows": [
        {
          "name": "Reference voltage (TL431A, 1.0%)",
          "symbol": "VREF",
          "kind": "tolerance",
          "unit": "V",
          "min": 2.47,
          "typ": 2.495,
          "max": 2.52,
          "conditions": "VKA=VREF IKA=10mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum cathode current",
          "symbol": "IKA(Min)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 150,
          "max": 400,
          "conditions": "VKA=VREF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dynamic impedance",
          "symbol": "ZKA",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.1,
          "max": 0.5,
          "conditions": "VKA=VREF IKA=1 to 100mA f≤1.0KHz",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Off-state cathode current",
          "symbol": "IKA(Off)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.01,
          "max": 1,
          "conditions": "VKA=36V VREF=0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference current",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.3,
          "max": 0.6,
          "conditions": "IKA=10mA R1=10KΩ R2=∞",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference current temperature drift",
          "symbol": "ΔIREF",
          "kind": "temperature_coefficient",
          "unit": "µA",
          "min": null,
          "typ": 0.2,
          "max": 0.3,
          "conditions": "IKA=10mA R1=10KΩ R2=∞ TA=-10℃to85℃",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage temperature drift",
          "symbol": "ΔVREF",
          "kind": "temperature_coefficient",
          "unit": "mV",
          "min": null,
          "typ": -5,
          "max": -20,
          "conditions": "VKA=VREF IKA=10mA -20℃ to 110℃",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Line regulation (VKA=10V to VREF)",
          "symbol": "∆VREF/∆VKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -1.87,
          "max": null,
          "conditions": "IKA=10mA VKA=10V to VREF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Line regulation (VKA=36V to 10V)",
          "symbol": "∆VREF/∆VKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -1.38,
          "max": null,
          "conditions": "IKA=10mA VKA=36V to 10V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Cathode voltage",
          "symbol": "VKA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Cathode current",
          "symbol": "IKA",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 0.2,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Cathode voltage",
          "symbol": "VKA",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Cathode current range",
          "symbol": "IKA",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -100,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reference input current range",
          "symbol": "IREF",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Lead soldering temperature",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10s",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD (human body model)",
          "symbol": "ESD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3500,
          "conditions": "Human body model",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction-to-case (SOP-8)",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "SOP-8 package",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Power rating (SOP-8)",
          "symbol": "",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 770,
          "conditions": "Ta=25℃, SOP-8 package",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tl431am"
  ],
  "discovery_pitch": "TL431AM (HGSEMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tl431am.kicad_sym",
    "tl431am.kicad_mod",
    "tl431am.glb",
    "tl431am.step",
    "tl431am.lbr",
    "docs/hero.png",
    "docs/tl431am-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tl431am-hero.glb",
    "tl431am-hero.overlay.json",
    "tl431am-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}