BCX55-QX

{
  "slug": "bcx55-qx",
  "version": "0.1.0",
  "type": "component",
  "description": "Nexperia Bipolar (BJT), SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "bcx55-qx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bcx55-qx.kicad_sym",
    "bcx55-qx.kicad_mod",
    "bcx55-qx.glb",
    "bcx55-qx.step",
    "bcx55-qx.lbr",
    "docs/hero.png",
    "docs/bcx55-qx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bcx55-qx-hero.glb",
    "bcx55-qx-hero.overlay.json",
    "bcx55-qx-etched.glb"
  ],
  "component": {
    "mpn": "BCX55-QX",
    "manufacturer": "Nexperia",
    "package": "SOT-89",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600687574826561536",
    "parts": {
      "symbol": "bcx55-qx.kicad_sym",
      "footprint": "bcx55-qx.kicad_mod",
      "model_3d": "bcx55-qx-hero.glb",
      "model_3d_plain": "bcx55-qx-etched.glb",
      "model_3d_step": "bcx55-qx-etched.step",
      "model_3d_step_plain": "bcx55-qx.step",
      "lbr": "bcx55-qx.lbr"
    },
    "distributor_links": {
      "lcsc": "C7219726",
      "mouser": "771-BCX55-QX"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T10:06:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "error"
      },
      "mouser": {
        "pn": "771-BCX55-QX",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "E",
        "type": "passive",
        "description": "Emitter of the NPN transistor; the datasheet gives no pin-specific limit, and the device emitter-base breakdown is limited by VEBO of 5 V (open collector)."
      },
      {
        "number": "2",
        "name": "C",
        "type": "passive",
        "description": "Collector of the NPN transistor, rated for VCEO of 60 V (open base) and a collector current of 1 A DC, with 2 A peak for single pulses of tp ≤ 1 ms."
      },
      {
        "number": "3",
        "name": "B",
        "type": "passive",
        "description": "Base of the NPN transistor, rated for a base current of 0.3 A DC and a peak base current of 0.3 A for single pulses of tp ≤ 1 ms."
      }
    ],
    "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's pinning table (Table 3) lists only pins 1, 2 and 3 (E, C, B). The SOT-89 exposed die; The electrical pin types are not stated in the datasheet. I mapped E, C and B to KiCad 'passive', wh; The pinout applies to all three orderable variants in this family that are sold in SOT-89 (BCX55-Q, "
        ],
        "pages_sent": 12,
        "cost_usd": 0.054,
        "at": "2026-10-19T10:03:55"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600687574826561536",
        "pages": 12,
        "sha256": "e22fa5bf52dd9752",
        "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": "bcx55-qx.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bcx55-qx-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "2e2fb42fbea49be70e2c773707e7676367ae194408d49e2a1f5d8ce7cfde5a09",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}