BDX54C

{
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  "version": "0.1.1",
  "type": "component",
  "description": "STMicroelectronics Darlington Transistors, TO-220. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
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  "dependencies": {},
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    "docs/bdx54c-datasheet.pdf",
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  "component": {
    "mpn": "BDX54C",
    "manufacturer": "STMicroelectronics",
    "package": "TO-220",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Darlington Transistors",
    "datasheet": "https://www.st.com/resource/en/datasheet/bdx54c.pdf",
    "parts": {
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    "distributor_links": {
      "lcsc": "C495219"
    },
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "input",
        "description": "Base terminal of PNP Darlington transistor; maximum base current IB = 0.2 A, maximum base-emitter voltage VEBO = 5 V."
      },
      {
        "number": "2",
        "name": "C",
        "type": "passive",
        "description": "Collector terminal (electrically connected to TAB for thermal contact); maximum collector current IC = 8 A continuous or ICM = 12 A peak, maximum collector-base voltage VCBO = 100 V, maximum collector-emitter voltage VCEO = 100 V."
      },
      {
        "number": "3",
        "name": "E",
        "type": "passive",
        "description": "Emitter terminal with integrated antiparallel collector-emitter diode for reverse voltage protection; monolithic Darlington configuration."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "primary_model": "claude-haiku-4-5-20251001",
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 9,
        "cost_usd": 0.0678,
        "at": "2026-09-23T17:42:08"
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        "pages": 9,
        "sha256": "d560383e1ef85332",
        "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",
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        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
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  },
  "title": "BDX54C",
  "brief": "STMicroelectronics Darlington Transistors, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "TO-220",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    }
  },
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  "discovery_pitch": "BDX54C (STMicroelectronics) component page with datasheet-verified CAD.",
  "visibility": "public"
}