BC337-40

{
  "schema_version": 1,
  "type": "component",
  "slug": "bc337-40",
  "title": "BC337-40",
  "brief": "LGE Bipolar (BJT), TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "transistors-thyristors",
    "bc337-40",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BC337-40",
    "manufacturer": "LGE",
    "package": "TO-92",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588892867884961792",
    "parts": {
      "symbol": "bc337-40.kicad_sym",
      "footprint": "bc337-40.kicad_mod",
      "model_3d": "bc337-40-hero.glb",
      "model_3d_plain": "bc337-40.glb",
      "model_3d_step": "bc337-40-etched.step",
      "model_3d_step_plain": "bc337-40.step",
      "lbr": "bc337-40.lbr"
    },
    "distributor_links": {
      "lcsc": "C713611",
      "digikey": "4878-BC337-40CT-ND",
      "mouser": "637-BC337-40"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T10:13:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "4878-BC337-40CT-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "637-BC337-40",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EMITTER",
        "type": "passive",
        "description": "Emitter terminal of the BC337-40 NPN transistor, rated with emitter-base breakdown VEBO of 5 V and continuous collector current IC of 800 mA."
      },
      {
        "number": "2",
        "name": "BASE",
        "type": "passive",
        "description": "Base terminal of the NPN transistor, with base-emitter saturation voltage VBE(sat) of 1.2 V at IC=500 mA, IB=50 mA."
      },
      {
        "number": "3",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "Collector terminal, rated VCEO of 45 V for BC337 (25 V for BC338), IC of 800 mA continuous, and total device dissipation PD of 625 mW."
      }
    ],
    "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: Pin numbers and names come from the TO-92 pin list on page 1 (1 EMITTER, 2 BASE, 3 COLLECTOR). The e; The ratings in the pin descriptions are device-family limits for the BC337/BC338 series from the max; The datasheet does not state a packing variant (bulk, ammo or reel) for BC337-40, so the pinout appl"
        ],
        "pages_sent": 3,
        "cost_usd": 0.0208,
        "at": "2026-10-09T10:12:11"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588892867884961792",
        "pages": 3,
        "sha256": "640676d709123a48",
        "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": "bc337-40.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          4.83,
          3.745,
          9.8
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bc337-40-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          4.83,
          3.745,
          9.8
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "6545a0fcf7ebd5b02e0733de6461f60d97102485de8f0199aa2210c8a55784b7",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "LGE",
      "Package": "TO-92",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bc337-40"
  ],
  "discovery_pitch": "BC337-40 (LGE) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bc337-40.kicad_sym",
    "bc337-40.kicad_mod",
    "bc337-40.glb",
    "bc337-40.step",
    "bc337-40.lbr",
    "docs/hero.png",
    "docs/bc337-40-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bc337-40-hero.glb",
    "bc337-40-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}