CJ431D-N3A-ARG

{
  "schema_version": 1,
  "type": "component",
  "slug": "cj431d-n3a-arg",
  "title": "CJ431D-N3A-ARG",
  "brief": "Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "cj431d-n3a-arg"
  ],
  "component": {
    "mpn": "CJ431D-N3A-ARG",
    "manufacturer": "Changjing",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2310251757_Jiangsu-Changjing-Electronics-Technology-Co---Ltd--CJ431D-N3A-ARG_C19078601.pdf",
    "parts": {
      "symbol": "cj431d-n3a-arg.kicad_sym",
      "footprint": "cj431d-n3a-arg.kicad_mod",
      "model_3d": "cj431d-n3a-arg-etched.glb",
      "model_3d_plain": "cj431d-n3a-arg.glb",
      "model_3d_step": "cj431d-n3a-arg-etched.step",
      "model_3d_step_plain": "cj431d-n3a-arg.step",
      "lbr": "cj431d-n3a-arg.lbr"
    },
    "distributor_links": {
      "lcsc": "C19078601"
    },
    "pins": [
      {
        "number": "1",
        "name": "R",
        "type": "input",
        "description": "Reference input pin. Compared internally to the 2.500 V bandgap reference; drive from the external divider between Cathode and Anode to program VKA. IREF is typically 0.7 uA (max 4 uA)."
      },
      {
        "number": "2",
        "name": "K",
        "type": "power_in",
        "description": "Cathode. Shunt current input / regulated output node. Sinks 1 mA to 100 mA of cathode current (IKA), absolute max VKA = 40 V, recommended max VKA = 36 V. Dynamic impedance ZKA typ 0.15 Ω."
      },
      {
        "number": "3",
        "name": "A",
        "type": "power_in",
        "description": "Anode pin, normally grounded. All device voltages are referenced to the anode terminal."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2310251757_Jiangsu-Changjing-Electronics-Technology-Co---Ltd--CJ431D-N3A-ARG_C19078601.pdf",
        "pages": 24,
        "sha256": "b75990ca44bd0e7d",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -0.9375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23@sha256:0d88c86c1b6d8c1a",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "cj431d-n3a-arg.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cj431d-n3a-arg-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "22316051427f906cecd0215298f9d5a669b1e1adcdf9bf1dcda4e8c0e4815427",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Changjing",
      "Package": "SOT-23",
      "Category": "PMIC",
      "Pins": "3"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cj431d-n3a-arg"
  ],
  "discovery_pitch": "CJ431D-N3A-ARG (Changjing) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cj431d-n3a-arg.kicad_sym",
    "cj431d-n3a-arg.kicad_mod",
    "cj431d-n3a-arg.glb",
    "cj431d-n3a-arg.step",
    "cj431d-n3a-arg-etched.step",
    "cj431d-n3a-arg.lbr",
    "docs/hero.png",
    "docs/cj431d-n3a-arg-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "CJ431D-N3A-ARG",
      "kind": "packaging"
    },
    {
      "mpn": "CJ431D-N3A-BRG",
      "kind": "unknown"
    },
    {
      "mpn": "CJ431D-N3A-ARGP3A-ARG",
      "kind": "packaging"
    },
    {
      "mpn": "CJ431D-N3A-ARGP3A-BRG",
      "kind": "packaging"
    },
    {
      "mpn": "CJ431D-N3A-ARGTAA-AAG",
      "kind": "packaging"
    },
    {
      "mpn": "CJ431D-N3A-ARGTAA-ABG",
      "kind": "packaging"
    },
    {
      "mpn": "CJ431D-N3A-ARGTAA-BAG",
      "kind": "packaging"
    },
    {
      "mpn": "CJ431D-N3A-ARGTAA-BBG",
      "kind": "packaging"
    },
    {
      "mpn": "CJ431D-N3A-ARGN3B-ARG",
      "kind": "packaging"
    },
    {
      "mpn": "CJ431D-N3A-ARGN3B-BRG",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T19:05:46.265Z"
}