BC846W

{
  "slug": "bc846w",
  "version": "0.1.0",
  "type": "component",
  "description": "Changjing Bipolar (BJT), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "bc846w",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bc846w.kicad_sym",
    "bc846w.kicad_mod",
    "bc846w.glb",
    "bc846w.step",
    "bc846w.lbr",
    "docs/hero.png",
    "docs/bc846w-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bc846w-hero.glb",
    "bc846w-hero.overlay.json"
  ],
  "component": {
    "mpn": "BC846W",
    "manufacturer": "Changjing",
    "package": "SOT-323",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588944263362699264",
    "parts": {
      "symbol": "bc846w.kicad_sym",
      "footprint": "bc846w.kicad_mod",
      "model_3d": "bc846w-hero.glb",
      "model_3d_plain": "bc846w.glb",
      "model_3d_step": "bc846w-etched.step",
      "model_3d_step_plain": "bc846w.step",
      "lbr": "bc846w.lbr"
    },
    "distributor_links": {
      "lcsc": "C2885597"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T19:02:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BASE",
        "type": "input",
        "description": "Base terminal of the NPN transistor; the emitter-base voltage VEBO is rated 6 V for BC846W and BC847W and 5 V for BC848W."
      },
      {
        "number": "2",
        "name": "EMITTER",
        "type": "passive",
        "description": "Emitter terminal of the NPN transistor; the datasheet gives no emitter-specific limit, and the emitter-base ratings (VEBO 6 V for BC846W/BC847W, 5 V for BC848W) apply."
      },
      {
        "number": "3",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "Collector terminal of the NPN transistor; collector-emitter voltage VCEO is rated 65 V (BC846W), 45 V (BC847W) or 30 V (BC848W) and continuous collector current is 0.1 A."
      }
    ],
    "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 the SOT-323 pinout only as a numbered list on page 1 (1. BASE, 2. EMITTER, 3. CO; KiCad ERC types were assigned by convention: BASE as input and EMITTER/COLLECTOR as passive, since t"
        ],
        "pages_sent": 5,
        "cost_usd": 0.0262,
        "at": "2026-10-09T19:00:13"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588944263362699264",
        "pages": 5,
        "sha256": "8a1d069380231a45",
        "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": "bc846w.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.1,
          2.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "acbf75a28fe41aa90efb38cd2b78220968d6eb6ebae1625dfd532dbeb268fece",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bc846w-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.1,
          2.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "11d2f8c9c361befbff285d06eebbe2d99d9ba07a63cbf3c94258821a3bdce401",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}