LM431ACM3

{
  "slug": "lm431acm3",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lm431acm3",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm431acm3.kicad_sym",
    "lm431acm3.kicad_mod",
    "lm431acm3.glb",
    "lm431acm3.step",
    "lm431acm3.lbr",
    "docs/hero.png",
    "docs/lm431acm3-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm431acm3-hero.glb",
    "lm431acm3-hero.overlay.json"
  ],
  "component": {
    "mpn": "LM431ACM3",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm431",
    "parts": {
      "symbol": "lm431acm3.kicad_sym",
      "footprint": "lm431acm3.kicad_mod",
      "model_3d": "lm431acm3-hero.glb",
      "model_3d_plain": "lm431acm3.glb",
      "model_3d_step": "lm431acm3-etched.step",
      "model_3d_step_plain": "lm431acm3.step",
      "lbr": "lm431acm3.lbr"
    },
    "distributor_links": {
      "lcsc": "C2870613",
      "digikey": "LM431ACM3TR-ND",
      "mouser": "926-LM431ACM3"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T02:38:16Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM431ACM3TR-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LM431ACM3",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Cathode",
        "type": "bidirectional",
        "description": "Shunt regulator output voltage and current terminal; accepts voltage from 2.5 V to 37 V maximum with continuous current range -10 mA to 150 mA."
      },
      {
        "number": "2",
        "name": "Reference",
        "type": "input",
        "description": "Reference voltage input pin for adjustable output voltage divider network; typical reference level 2.5 V with maximum input current 10 mA."
      },
      {
        "number": "3",
        "name": "Anode",
        "type": "power_in",
        "description": "Ground return terminal normally connected to ground; provides shunt current sink path with continuous current capability -10 mA to 150 mA."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 10,
        "cost_usd": 0.1068,
        "at": "2026-10-07T02:37:55"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm431",
        "pages": 37,
        "sha256": "9c0bcff4967eaad2",
        "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": "lm431acm3.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm431acm3-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5b69e596bb2474a53de6366afcd49248dae5e234aab6d541b6e65c2af2fefa39",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}