CJ431-HAF

{
  "slug": "cj431-haf",
  "version": "0.1.0",
  "type": "component",
  "description": "Changjing Voltage References, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "cj431-haf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cj431-haf.kicad_sym",
    "cj431-haf.kicad_mod",
    "cj431-haf.glb",
    "cj431-haf.step",
    "cj431-haf.lbr",
    "docs/hero.png",
    "docs/cj431-haf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cj431-haf-hero.glb",
    "cj431-haf-hero.overlay.json",
    "cj431-haf-etched.glb"
  ],
  "component": {
    "mpn": "CJ431-HAF",
    "manufacturer": "Changjing",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Power Supply Chip",
    "subcategory": "Voltage References",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b552451b2890b4235eed68a2df8c3e50.pdf",
    "parts": {
      "symbol": "cj431-haf.kicad_sym",
      "footprint": "cj431-haf.kicad_mod",
      "model_3d": "cj431-haf-hero.glb",
      "model_3d_plain": "cj431-haf-etched.glb",
      "model_3d_step": "cj431-haf-etched.step",
      "model_3d_step_plain": "cj431-haf.step",
      "lbr": "cj431-haf.lbr"
    },
    "distributor_links": {
      "lcsc": "C2961224"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T15:41:29Z",
      "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, with a reference input current range of 0.05 to +10 mA and a reference voltage of 2.475 to 2.525 V at VKA=VREF, IKA=10 mA."
      },
      {
        "number": "2",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode of the shunt regulator, rated for a cathode voltage up to 36 V and a continuous cathode current of -100 to +150 mA."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode of the shunt regulator, the return path for the cathode current 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-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 has two different SOT-23 pinouts. CJ431 (marked 431) is 1=REFERENCE, 2=CATHODE, 3=ANOD; The datasheet does not state pin electrical types. Cathode and anode are set to passive, and referen",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0584,
        "at": "2026-10-28T15:41:09"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/b552451b2890b4235eed68a2df8c3e50.pdf",
        "pages": 11,
        "sha256": "362090c089861970",
        "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": "cj431-haf.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": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cj431-haf-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": "b8026aa4c5175bbdecb2b3262f18fd8f0fc8616f58928f72820fcacb46218c29",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}