main
Ray Set visibility: public 0fe5e15 7d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "bc817-40q",
  "title": "BC817-40Q",
  "brief": "Yangzhou Yangjie Elec Tech Bipolar (BJT), SOT-23. 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",
    "bc817-40q",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BC817-40Q",
    "manufacturer": "Yangzhou Yangjie Elec Tech",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590234580344074240",
    "parts": {
      "symbol": "bc817-40q.kicad_sym",
      "footprint": "bc817-40q.kicad_mod",
      "model_3d": "bc817-40q-hero.glb",
      "model_3d_plain": "bc817-40q-etched.glb",
      "model_3d_step": "bc817-40q-etched.step",
      "model_3d_step_plain": "bc817-40q.step",
      "lbr": "bc817-40q.lbr"
    },
    "distributor_links": {
      "lcsc": "C2942484"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T15:39:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "input",
        "description": "Base of the NPN transistor, shown at the bottom left of the SOT-23 symbol on the front page."
      },
      {
        "number": "2",
        "name": "E",
        "type": "passive",
        "description": "Emitter of the NPN transistor, shown at the bottom right of the SOT-23 symbol; VEBO is 5 V max."
      },
      {
        "number": "3",
        "name": "C",
        "type": "passive",
        "description": "Collector of the NPN transistor, shown at the top of the SOT-23 symbol; VCEO is 45 V, VCBO is 50 V and continuous IC is 500 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 only as B, E and C. It prints no pin numbers. The numbers 1=B",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 6,
        "cost_usd": 0.2007,
        "at": "2026-10-18T15:39:31"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590234580344074240",
        "pages": 6,
        "sha256": "6526b40fb9456f61",
        "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": "bc817-40q.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bc817-40q-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "fed0c2338f5dc27df998317c21135eae7ad72c8ceb98422c335a7dde223f855d",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Yangzhou Yangjie Elec Tech",
      "Package": "SOT-23",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "appearance": {
      "contacts": {
        "quote": "● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "housing": {
        "quote": "4. Body color: Black",
        "page": 5,
        "doc": "ds.pdf",
        "colour": "black"
      },
      "version": 1,
      "datasheet_sha256": "6526b40fb9456f61b18ee2e5f21cfded17dbe3d6c2e8bbb0f44bfe2255462f58"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "6526b40fb9456f61b18ee2e5f21cfded17dbe3d6c2e8bbb0f44bfe2255462f58",
      "rows": [
        {
          "name": "Collector-emitter breakdown voltage",
          "symbol": "VCEO",
          "kind": "electrical",
          "unit": "V",
          "min": 45,
          "typ": null,
          "max": null,
          "conditions": "IC=10mAdc, IB=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-base breakdown voltage",
          "symbol": "VCBO",
          "kind": "electrical",
          "unit": "V",
          "min": 50,
          "typ": null,
          "max": null,
          "conditions": "IC=10uAdc, IE=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter-base breakdown voltage",
          "symbol": "VEBO",
          "kind": "electrical",
          "unit": "V",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "IE=1.0μAdc, IC=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter cut-off current",
          "symbol": "IEBO",
          "kind": "electrical",
          "unit": "uAdc",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VEB=4.0Vdc, IC=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector cut-off current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "uAdc",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VCB=45Vdc, IE=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC current gain (BC817-40Q)",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "-",
          "min": 250,
          "typ": null,
          "max": 600,
          "conditions": "IC=100mAdc, VCE=1.0Vdc",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC current gain",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "-",
          "min": 40,
          "typ": null,
          "max": null,
          "conditions": "IC=500mAdc, VCE=1.0Vdc",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter saturation voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.7,
          "conditions": "IC=500mAdc, IB=50mAdc",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base-emitter saturation voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "IC=500mAdc, IB=50mAdc",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Current gain-bandwidth product",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "IC=10mAdc, Vce=5.0Vdc, f=100MHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 45,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-base voltage",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Emitter-base voltage",
          "symbol": "VEBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector current, continuous",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Total device dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "Device mounted on FR-4 PCB 1.0 x 1.0 x 0.06 inch",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "K/W",
          "min": null,
          "typ": null,
          "max": 417,
          "conditions": "Device mounted on FR-4 PCB 1.0 x 1.0 x 0.06 inch",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bc817-40q"
  ],
  "discovery_pitch": "BC817-40Q (Yangzhou Yangjie Elec Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "bc817-40q.kicad_sym",
    "bc817-40q.kicad_mod",
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    "bc817-40q.step",
    "bc817-40q.lbr",
    "docs/hero.png",
    "docs/bc817-40q-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bc817-40q-hero.glb",
    "bc817-40q-hero.overlay.json",
    "bc817-40q-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}