TL431A-YK

{
  "slug": "tl431a-yk",
  "version": "0.1.0",
  "type": "component",
  "description": "PJSEMI Voltage References, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "tl431a-yk",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "tl431a-yk.kicad_sym",
    "tl431a-yk.kicad_mod",
    "tl431a-yk.glb",
    "tl431a-yk.step",
    "tl431a-yk.lbr",
    "docs/hero.png",
    "docs/tl431a-yk-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tl431a-yk-hero.glb",
    "tl431a-yk-hero.overlay.json",
    "tl431a-yk-etched.glb"
  ],
  "component": {
    "mpn": "TL431A-YK",
    "manufacturer": "PJSEMI",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Power Supply Chip",
    "subcategory": "Voltage References",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/62324588877c0de316a962577e3d88c8.pdf",
    "parts": {
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      "model_3d_step": "tl431a-yk-etched.step",
      "model_3d_step_plain": "tl431a-yk.step",
      "lbr": "tl431a-yk.lbr"
    },
    "distributor_links": {
      "lcsc": "C2977367"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:31:16Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "Reference input pin that sets the cathode regulation voltage (VREF 2.483V min to 2.507V max for TL431A); reference input current range is -0.05 to +10 mA."
      },
      {
        "number": "2",
        "name": "K",
        "type": "passive",
        "description": "Cathode, the regulated shunt terminal with cathode voltage VREF to 36V recommended (37V absolute max) and cathode current 1 to 100 mA recommended."
      },
      {
        "number": "3",
        "name": "A",
        "type": "power_in",
        "description": "Anode, the ground/return terminal of the shunt reference, connected to the lowest circuit potential."
      }
    ],
    "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: Page 1 shows both a pin-label diagram (2:Cathode, 3:Anode, 1:Reference) and a text list; they agree."
        ],
        "pages_sent": 4,
        "cost_usd": 0.0317,
        "at": "2026-10-22T22:31:00"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/62324588877c0de316a962577e3d88c8.pdf",
        "pages": 4,
        "sha256": "02fd9193f0dbb0b7",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
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        "checked": "2026-10-22",
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}