MMBT431LT1

{
  "slug": "mmbt431lt1",
  "version": "0.1.0",
  "type": "component",
  "description": "ALJ Voltage Reference, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "mmbt431lt1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mmbt431lt1.kicad_sym",
    "mmbt431lt1.kicad_mod",
    "mmbt431lt1.glb",
    "mmbt431lt1.step",
    "mmbt431lt1.lbr",
    "docs/hero.png",
    "docs/mmbt431lt1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mmbt431lt1-hero.glb",
    "mmbt431lt1-hero.overlay.json",
    "mmbt431lt1-etched.glb"
  ],
  "component": {
    "mpn": "MMBT431LT1",
    "manufacturer": "ALJ",
    "package": "SOT-89",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603369170746548224",
    "parts": {
      "symbol": "mmbt431lt1.kicad_sym",
      "footprint": "mmbt431lt1.kicad_mod",
      "model_3d": "mmbt431lt1-hero.glb",
      "model_3d_plain": "mmbt431lt1-etched.glb",
      "model_3d_step": "mmbt431lt1-etched.step",
      "model_3d_step_plain": "mmbt431lt1.step",
      "lbr": "mmbt431lt1.lbr"
    },
    "distributor_links": {
      "lcsc": "C22400467"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T01:51:04Z",
      "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, where Vref is 2.445 to 2.545 V (typ. 2.495 V) at IKA = 10 mA, and Iref is rated 0.05 to 10 mA."
      },
      {
        "number": "2",
        "name": "ANODE",
        "type": "passive",
        "description": "Common anode terminal of the shunt regulator, which must carry at least IKA(min) = 0.3 mA for regulation, with the absolute cathode-to-anode limits given in the ratings table."
      },
      {
        "number": "3",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode terminal whose voltage can be adjusted up to 36 V, with absolute maximum VKA of 37 V and continuous cathode current range of -100 to +150 mA."
      }
    ],
    "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: The datasheet gives only a numbered text list (1. REFERENCE, 2. ANODE, 3. CATHODE) and no pin-out fi; The ANODE description is partly inferred: the datasheet states IKA(min) and the absolute cathode lim; Part-number inconsistency: the header and title say MMBT431LT1, while the description says MMT431LT1"
        ],
        "pages_sent": 4,
        "cost_usd": 0.0153,
        "at": "2026-10-18T01:49:20"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603369170746548224",
        "pages": 4,
        "sha256": "2ebed224d662b431",
        "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": "mmbt431lt1.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mmbt431lt1-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "8a1c184729804d0689e02a7f0b7f43d4d16a821619a3d361b61c70433c894e3a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}