main
Ray Set visibility: public fd41dbf 2d ago
{
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  "type": "component",
  "slug": "tl431l",
  "title": "TL431L",
  "brief": "Slkor(SLKORMICRO Elec.) Voltage Reference, TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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  "component": {
    "mpn": "TL431L",
    "manufacturer": "Slkor(SLKORMICRO Elec.)",
    "package": "TO-92",
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    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b218ca0a2d119a5b9168490d71161f6a.pdf",
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      "lbr": "tl431l.lbr"
    },
    "distributor_links": {
      "lcsc": "C49238167"
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    "distributor_check": {
      "checked_at": "2026-11-04T22:23:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "REFERENCE",
        "type": "input",
        "description": "Reference input of the adjustable shunt regulator; the datasheet gives a reference input voltage of 2.475 V min, 2.5 V typ and 2.525 V max at VKA=VREF, IKA=10 mA, and a reference input current range of 0.05 to 10 mA."
      },
      {
        "number": "2",
        "name": "ANODE",
        "type": "power_in",
        "description": "Anode terminal of the shunt regulator, normally connected to ground, with a cathode current range of -100 to +150 mA continuous."
      },
      {
        "number": "3",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode terminal of the shunt regulator, with a maximum cathode voltage of 36 V and a cathode current range of -100 to +150 mA continuous."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet pin table for the TL431L TO-92 lists 1.REFERENCE, 2.ANODE, 3.CATHODE. The TO-92 pin-nu",
          "vision extraction: provenance cannot be text-verified; needs consensus"
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        "cost_usd": 0.0349,
        "at": "2026-11-04T22:23:39"
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        "pages": 7,
        "sha256": "2d18cd6ce2af8ab3",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
        "checked": "2026-11-04",
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  "metadata": {
    "specs": {
      "Manufacturer": "Slkor(SLKORMICRO Elec.)",
      "Package": "TO-92",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "2d18cd6ce2af8ab312c17c30e7b6f57b47146ff57bc708ef53b9652107c4a3ab",
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        {
          "name": "Cathode voltage",
          "symbol": "VKA",
          "kind": "absolute_maximum",
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          "max": 36,
          "conditions": "",
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        {
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        {
          "name": "Reference input current range",
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          "min": 0.05,
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        {
          "name": "Operating junction temperature",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
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        {
          "name": "Storage temperature range",
          "symbol": "TSTG",
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          "unit": "°C",
          "min": -65,
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          "name": "Deviation of reference input voltage over temperature",
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          "conditions": "VKA=VREF, IKA=10mA",
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        {
          "name": "Ratio of change in reference input voltage to change in cathode voltage (VKA=10V to VREF)",
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          "unit": "µA",
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          "conditions": "IKA=10mA, R1=10kΩ",
          "source_page": 2,
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          "conditions": "IKA=10mA, R1=10kΩ",
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          "max": 1,
          "conditions": "VKA=36V, VREF=0",
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          "source": "datasheet"
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        {
          "name": "Dynamic impedance",
          "symbol": "ZKA",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.15,
          "max": 0.5,
          "conditions": "VKA=VREF, IKA=1 to 100mA, f≤1.0 kHz",
          "source_page": 2,
          "source": "datasheet"
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        {
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        {
          "name": "Thermal resistance from junction to ambient (TO-92)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 162,
          "max": null,
          "conditions": "TO-92 column",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
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  "discovery_triggers": [
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  "discovery_pitch": "TL431L (Slkor(SLKORMICRO Elec.)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}