BST62

{
  "slug": "bst62",
  "version": "0.1.0",
  "type": "component",
  "description": "Nexperia Darlington Transistors, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors",
    "bst62",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bst62.kicad_sym",
    "bst62.kicad_mod",
    "bst62.glb",
    "bst62.step",
    "bst62.lbr",
    "docs/hero.png",
    "docs/bst62-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bst62-hero.glb",
    "bst62-hero.overlay.json",
    "bst62-etched.glb"
  ],
  "component": {
    "mpn": "BST62",
    "manufacturer": "Nexperia",
    "package": "SOT-89",
    "pin_count": 3,
    "category": "Transistors",
    "subcategory": "Darlington Transistors",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/BST62.pdf",
    "parts": {
      "symbol": "bst62.kicad_sym",
      "footprint": "bst62.kicad_mod",
      "model_3d": "bst62-hero.glb",
      "model_3d_plain": "bst62-etched.glb",
      "model_3d_step": "bst62-etched.step",
      "model_3d_step_plain": "bst62.step",
      "lbr": "bst62.lbr"
    },
    "distributor_links": {
      "lcsc": "C549771",
      "digikey": "4878-BST62TR-ND",
      "mouser": "637-BST62"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T03:18:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "4878-BST62TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "637-BST62",
        "status": "found",
        "lifecycle": "New Product"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "E",
        "type": "passive",
        "description": "Emitter of the PNP Darlington transistor; the datasheet limits emitter-base voltage to -5 V (VEBO) and collector current to -1 A (IC)."
      },
      {
        "number": "2",
        "name": "C",
        "type": "passive",
        "description": "Collector of the PNP Darlington transistor; the datasheet limits collector-base voltage to -90 V (VCBO), collector-emitter voltage to -80 V (VCEO), collector current to -1 A (IC) and peak collector current to -2 A (ICM)."
      },
      {
        "number": "3",
        "name": "B",
        "type": "passive",
        "description": "Base of the PNP Darlington transistor; the datasheet limits base current to -100 mA (IB)."
      }
    ],
    "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 names the pins only as emitter, collector and base. The KiCad pin types (passive) were; Pin 2 (collector) is the collector connection of the device. Footnote [1] to the limiting values and; The ordering table (Table 3) lists only the SOT89 package for BST62, so the pinout above applies to "
        ],
        "pages_sent": 8,
        "cost_usd": 0.0313,
        "at": "2026-10-31T03:17:53"
      },
      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/BST62.pdf",
        "pages": 8,
        "sha256": "bd2ce8ed6f666da1",
        "source_tier": "mfr"
      },
      "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": "bst62.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": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bst62-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": "25919d4ca43f83f7798a1baec24dbb21e2f7700529b9dd4761970979ab98e44e",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SOT89",
      "source_page": 4,
      "D": {
        "nom_mm": 4.5,
        "range_mm": [
          4.4,
          4.6
        ]
      },
      "E1": {
        "nom_mm": 2.5,
        "range_mm": [
          2.4,
          2.6
        ]
      },
      "E": {
        "nom_mm": 4.0,
        "range_mm": [
          3.75,
          4.25
        ]
      },
      "e": {
        "nom_mm": 1.5,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.5,
        "range_mm": [
          1.4,
          1.6
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "bst62.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}