BC817-40WT1G

{
  "slug": "bc817-40wt1g",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Bipolar (BJT), SC-70. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "bc817-40wt1g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bc817-40wt1g.kicad_sym",
    "bc817-40wt1g.kicad_mod",
    "bc817-40wt1g.glb",
    "bc817-40wt1g.step",
    "bc817-40wt1g.lbr",
    "docs/hero.png",
    "docs/bc817-40wt1g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bc817-40wt1g-hero.glb",
    "bc817-40wt1g-hero.overlay.json"
  ],
  "component": {
    "mpn": "BC817-40WT1G",
    "manufacturer": "onsemi",
    "package": "SC-70",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588914137280102400",
    "parts": {
      "symbol": "bc817-40wt1g.kicad_sym",
      "footprint": "bc817-40wt1g.kicad_mod",
      "model_3d": "bc817-40wt1g-hero.glb",
      "model_3d_plain": "bc817-40wt1g.glb",
      "model_3d_step": "bc817-40wt1g-etched.step",
      "model_3d_step_plain": "bc817-40wt1g.step",
      "lbr": "bc817-40wt1g.lbr"
    },
    "distributor_links": {
      "lcsc": "C605312",
      "digikey": "BC817-40WT1GOSTR-ND",
      "mouser": "863-BC817-40WT1G"
    },
    "distributor_check": {
      "checked_at": "2026-11-13T11:50:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "BC817-40WT1GOSTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "863-BC817-40WT1G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BASE",
        "type": "passive",
        "description": "BASE terminal of the NPN general-purpose transistor; the datasheet gives no separate base-pin limit, and the Emitter−Base voltage VEBO is rated 5.0 V maximum."
      },
      {
        "number": "2",
        "name": "EMITTER",
        "type": "passive",
        "description": "EMITTER terminal of the NPN transistor, with the Emitter−Base voltage VEBO rated at 5.0 V."
      },
      {
        "number": "3",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "COLLECTOR terminal of the NPN transistor, with a Collector−Emitter voltage VCEO of 45 V and continuous collector current IC of 500 mA."
      }
    ],
    "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: Pin numbers and names come from the SC-70 (SOT-323) Style 3 pin assignment on the package drawing pa; Pin types are KiCad ERC classes assigned by me, not stated in the datasheet. All three terminals are; The datasheet gives no base-pin-specific electrical limit, so the BASE description only references t"
        ],
        "pages_sent": 5,
        "cost_usd": 0.0069,
        "at": "2026-11-13T11:50:07"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588914137280102400",
        "pages": 5,
        "sha256": "ef219f987cc349a7",
        "source_tier": "lcsc"
      },
      "cad": "land: KiCad official (CC-BY-SA 4.0); 3D: generated from the datasheet",
      "model_3d_generated": {
        "generator": "factory/gen_pkg3d.py",
        "family": "SOT-563",
        "height_mm": 0.9,
        "height_basis": "datasheet A, nominal",
        "standoff_mm": 0.05,
        "standoff_basis": "family nominal (no datasheet A1 read)",
        "lead_width_mm": 0.27,
        "lead_width_basis": "default: 0.6 x pad width across the lead, at most 0.45 x pitch 1.30 mm; a tab 0.9 x its width (no datasheet b read)",
        "lead_thickness_mm": 0.1,
        "lead_thickness_basis": "default for pitch 1.30 mm, height 0.9 mm (no datasheet c read)"
      },
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bc817-40wt1g.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.1,
          2.1,
          0.9
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "a6d42e2a908babc1a45cee2310f126479a9525310e03b04c990587d02373bfc4",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bc817-40wt1g-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.1,
          2.1,
          0.9
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "487f76062f0e5f237f3781414bae30f15d855c8726434a2f69d343cb0ad4d2e0",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SC-70 (SOT-323), CASE 419-04",
      "source_page": 5,
      "D": {
        "nom_mm": 2.1,
        "range_mm": [
          1.8,
          2.2
        ]
      },
      "E1": {
        "nom_mm": 1.24,
        "range_mm": [
          1.15,
          1.35
        ]
      },
      "E": {
        "nom_mm": 2.1,
        "range_mm": [
          2.0,
          2.4
        ]
      },
      "e": {
        "nom_mm": 0.65,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 0.9,
        "range_mm": [
          0.8,
          1.0
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "bc817-40wt1g.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}