BC846BW

{
  "slug": "bc846bw",
  "version": "0.1.0",
  "type": "component",
  "description": "Guangdong Hottech Bipolar (BJT), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "bc846bw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bc846bw.kicad_sym",
    "bc846bw.kicad_mod",
    "bc846bw.glb",
    "bc846bw.step",
    "bc846bw.lbr",
    "docs/hero.png",
    "docs/bc846bw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bc846bw-hero.glb",
    "bc846bw-hero.overlay.json",
    "bc846bw-etched.glb"
  ],
  "component": {
    "mpn": "BC846BW",
    "manufacturer": "Guangdong Hottech",
    "package": "SOT-323",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/258dd0caba8d1bb02525d5b47d5c0daf.pdf",
    "parts": {
      "symbol": "bc846bw.kicad_sym",
      "footprint": "bc846bw.kicad_mod",
      "model_3d": "bc846bw-hero.glb",
      "model_3d_plain": "bc846bw-etched.glb",
      "model_3d_step": "bc846bw-etched.step",
      "model_3d_step_plain": "bc846bw.step",
      "lbr": "bc846bw.lbr"
    },
    "distributor_links": {
      "lcsc": "C5364246",
      "digikey": "4878-BC846BWTR-ND",
      "mouser": "637-BC846BW"
    },
    "distributor_check": {
      "checked_at": "2026-11-04T13:12:57Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "4878-BC846BWTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "637-BC846BW",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "input",
        "description": "Base of the NPN transistor, shown at the bottom-left of the SOT-323 diagram; VEBO is 6 V max and VBE(ON) is 0.58-0.7 V at VCE=5V, IC=2mA."
      },
      {
        "number": "2",
        "name": "E",
        "type": "passive",
        "description": "Emitter of the NPN transistor, shown at the bottom-right of the SOT-323 diagram; IC is 100 mA max and VEBO is 6 V max."
      },
      {
        "number": "3",
        "name": "C",
        "type": "passive",
        "description": "Collector of the NPN transistor, the single lead on top of the SOT-323 diagram; VCBO is 80 V, VCEO is 65 V and IC is 100 mA max."
      }
    ],
    "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": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet drawing labels the leads C (single side), B (bottom-left) and E (bottom-right) but pri; The datasheet covers BC846W, with the BC846AW and BC846BW variants in one table. BC846BW is hFE rank",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 4,
        "cost_usd": 0.1699,
        "at": "2026-11-04T13:12:48"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/258dd0caba8d1bb02525d5b47d5c0daf.pdf",
        "pages": 4,
        "sha256": "1ca8300b001e5ce4",
        "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": "bc846bw.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": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bc846bw-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": "f1a2eb42e002e3dc44cd002533ae2a0dabf451745303c0f1df671da384edc5c9",
        "checked": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SOT-323",
      "source_page": 3,
      "D": {
        "nom_mm": 2.1,
        "range_mm": [
          2.0,
          2.2
        ]
      },
      "E1": {
        "nom_mm": 1.25,
        "range_mm": [
          1.15,
          1.35
        ]
      },
      "E": {
        "nom_mm": 2.3,
        "range_mm": [
          2.15,
          2.45
        ]
      },
      "e": {
        "nom_mm": 0.65,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.0,
        "range_mm": [
          0.9,
          1.1
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "bc846bw.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}