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Ray Set visibility: public fb0d12a 21d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "tl431n",
  "title": "TL431N",
  "brief": "Shikues Voltage Reference, SOT-23. 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)",
    "tl431n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TL431N",
    "manufacturer": "Shikues",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590165309693984768",
    "parts": {
      "symbol": "tl431n.kicad_sym",
      "footprint": "tl431n.kicad_mod",
      "model_3d": "tl431n-hero.glb",
      "model_3d_plain": "tl431n-etched.glb",
      "model_3d_step": "tl431n-etched.step",
      "model_3d_step_plain": "tl431n.step",
      "lbr": "tl431n.lbr"
    },
    "distributor_links": {
      "lcsc": "C962727"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T00:00:23Z",
      "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 is the output of the shunt regulator, rated for a cathode voltage of 37 V absolute maximum (36 V recommended maximum) and a continuous cathode current of -100 to +150 mA absolute maximum, with 1 to 100 mA recommended."
      },
      {
        "number": "2",
        "name": "Reference",
        "type": "input",
        "description": "Reference input sets the regulated voltage, with a reference input voltage of 2.487 to 2.513 V at IKA = 10 mA and a reference input current limited to -0.05 to +10 mA."
      },
      {
        "number": "3",
        "name": "Anode",
        "type": "passive",
        "description": "Anode is the common terminal of the device; the datasheet gives no anode-specific voltage or current limit beyond the device-level ratings."
      }
    ],
    "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: Pin numbers and names (1 Cathode, 2 Reference, 3 Anode) are taken from the datasheet's pin legend on; The datasheet does not state KiCad ERC classes. Types were assigned by function: Cathode and Anode a; The datasheet has no anode-specific electrical limits, so the Anode description states that explicit"
        ],
        "pages_sent": 3,
        "cost_usd": 0.0206,
        "at": "2026-10-18T23:58:09"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590165309693984768",
        "pages": 3,
        "sha256": "a1cbcc087006b2ad",
        "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": "tl431n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tl431n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a0fad191dd41abc3231616b44a8c808c7e903e4f423247e86a77e3ab071d26de",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Shikues",
      "Package": "SOT-23",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "a1cbcc087006b2ad29a925a29339e769fa31c7d0961fc19a672466bd9c99f235",
      "rows": [
        {
          "name": "Cathode Voltage",
          "symbol": "VKA",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 37,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Cathode Current Range (Continuous)",
          "symbol": "IKA",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -100,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Reference Input Current Range",
          "symbol": "IREF",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -0.05,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 350,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "Topr",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -25,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Cathode Voltage (min printed as VREF)",
          "symbol": "VKA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Cathode Current",
          "symbol": "IKA",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 1,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Input Voltage Over Temperature",
          "symbol": "ΔVREF/ΔT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 4.5,
          "max": 17,
          "conditions": "at VKA = VREF, IKA = 10 mA, -25 °C ≤ Ta ≤ +85 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Ratio of Change in Reference Input Voltage to Change in Cathode Voltage (ΔVKA = 10 V to VREF)",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -1,
          "max": -2.7,
          "conditions": "at IKA = 10 mA, ΔVKA = 10 V to VREF",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Ratio of Change in Reference Input Voltage to Change in Cathode Voltage (ΔVKA = 36 V to 10 V)",
          "symbol": "ΔVREF/ΔVKA",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -0.5,
          "max": -2,
          "conditions": "at IKA = 10 mA, ΔVKA = 36 V to 10 V",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Reference Input Current",
          "symbol": "IREF",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1.5,
          "max": 4,
          "conditions": "at IKA = 10 mA, R1 = 10 KΩ, R2 = ∞",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Deviation of Reference Input Current Over Full Temperature",
          "symbol": "ΔIREF/ΔT",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.4,
          "max": 1.2,
          "conditions": "at IKA = 10 mA, R1 = 10 KΩ, R2 = ∞, -25 °C ≤ Ta ≤ +85 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Minimum Cathode Current for Regulation",
          "symbol": "IKA(min)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.45,
          "max": 1,
          "conditions": "at VKA = VREF",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Off-Stage Cathode Current",
          "symbol": "IKA(OFF)",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.05,
          "max": 1,
          "conditions": "at VKA = 36 V, VREF = 0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Dynamic Impedance",
          "symbol": "ZKA",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.15,
          "max": 0.5,
          "conditions": "at VKA = VREF, IKA = 1 to 100 mA, f ≤ 1 KHz",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Reference Input Voltage",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 2.487,
          "typ": 2.5,
          "max": 2.513,
          "conditions": "at VKA = VREF, IKA = 10 mA",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tl431n"
  ],
  "discovery_pitch": "TL431N (Shikues) 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",
    "tl431n.kicad_sym",
    "tl431n.kicad_mod",
    "tl431n.glb",
    "tl431n.step",
    "tl431n.lbr",
    "docs/hero.png",
    "docs/tl431n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tl431n-hero.glb",
    "tl431n-hero.overlay.json",
    "tl431n-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}