BC547CTFR

{
  "slug": "bc547ctfr",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Bipolar Transistors - BJT, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors",
    "bc547ctfr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bc547ctfr.kicad_sym",
    "bc547ctfr.kicad_mod",
    "bc547ctfr.glb",
    "bc547ctfr.step",
    "bc547ctfr.lbr",
    "docs/hero.png",
    "docs/bc547ctfr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bc547ctfr-hero.glb",
    "bc547ctfr-hero.overlay.json",
    "bc547ctfr-etched.glb"
  ],
  "component": {
    "mpn": "BC547CTFR",
    "manufacturer": "onsemi",
    "package": "TO-92-3",
    "pin_count": 3,
    "category": "Transistors",
    "subcategory": "Bipolar Transistors - BJT",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/bc547ctfr-d.pdf",
    "parts": {
      "symbol": "bc547ctfr.kicad_sym",
      "footprint": "bc547ctfr.kicad_mod",
      "model_3d": "bc547ctfr-hero.glb",
      "model_3d_plain": "bc547ctfr-etched.glb",
      "model_3d_step": "bc547ctfr-etched.step",
      "model_3d_step_plain": "bc547ctfr.step",
      "lbr": "bc547ctfr.lbr"
    },
    "distributor_links": {
      "lcsc": "C900800",
      "digikey": "BC547CTFRTR-ND",
      "mouser": "512-BC547CTFR"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T12:30:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "BC547CTFRTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "512-BC547CTFR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Collector",
        "type": "passive",
        "description": "Collector of the NPN transistor; VCEO 45 V and IC up to 100 mA DC for BC547 (VCBO 50 V)."
      },
      {
        "number": "2",
        "name": "Base",
        "type": "passive",
        "description": "Base of the NPN transistor; VEBO maximum 6 V for BC547, with hFE 420 to 800 for the C grade at VCE = 5 V, IC = 2 mA."
      },
      {
        "number": "3",
        "name": "Emitter",
        "type": "passive",
        "description": "Emitter of the NPN transistor; total collector power dissipation is 500 mW at TA = 25°C."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin order (1 Collector, 2 Base, 3 Emitter) is taken from the page 2 text; package drawings on pages "
        ],
        "pages_sent": 8,
        "cost_usd": 0.0797,
        "at": "2026-10-23T12:30:06"
      },
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/bc547ctfr-d.pdf",
        "pages": 8,
        "sha256": "2ae8237cc78de283",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          3.745,
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        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bc547ctfr-etched.step",
        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "sha256": "57632c8fce122c0b092c0c2bf88b24ab5b91ab66de919ec2e5875ba4d070063e",
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  }
}