BSP52

{
  "schema_version": 1,
  "type": "component",
  "slug": "bsp52",
  "title": "BSP52",
  "brief": "Nexperia Darlington Transistors, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "transistors-thyristors",
    "bsp52"
  ],
  "component": {
    "mpn": "BSP52",
    "manufacturer": "Nexperia",
    "package": "SOT-223",
    "pin_count": 4,
    "category": "Transistors/Thyristors",
    "subcategory": "Darlington Transistors",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/BSP52.pdf",
    "parts": {
      "symbol": "bsp52.kicad_sym",
      "footprint": "bsp52.kicad_mod",
      "model_3d": "bsp52-etched.glb",
      "model_3d_plain": "bsp52.glb",
      "model_3d_step": "bsp52-etched.step",
      "model_3d_step_plain": "bsp52.step",
      "lbr": "bsp52.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "input",
        "description": "Base of the NPN Darlington. Drives the internal Darlington pair through an integrated base-emitter resistor. VBEsat up to 1.9 V at IC = 500 mA; IB rated to 100 mA max; VEBO = 5 V."
      },
      {
        "number": "2",
        "name": "C",
        "type": "passive",
        "description": "Collector of the NPN Darlington (electrically common with pin 4 / heatsink tab). VCES = 80 V, VCBO = 90 V, IC = 1 A continuous (2 A peak); VCEsat up to 1.3 V at IC = 500 mA."
      },
      {
        "number": "3",
        "name": "E",
        "type": "passive",
        "description": "Emitter of the NPN Darlington. Anti-parallel integrated diode is connected between collector and emitter."
      },
      {
        "number": "4",
        "name": "C",
        "type": "passive",
        "description": "Collector (heatsink tab). Electrically identical to pin 2; provides thermal path for power dissipation. Rth(j-sp) = 17 K/W; Ptot = 1.25 W at Tamb = 25 °C on 1 cm² pad."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/BSP52.pdf",
        "pages": 9,
        "sha256": "5cd6bd54ae06e75c",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bsp52.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          6.5,
          1.7
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bsp52-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          6.5,
          1.7
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "43ba3cf8941dcacebc76f519bd0217be34aa7ba3b2c7385e98cf924b7fc25178",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "SOT-223",
      "Category": "Transistors/Thyristors",
      "Pins": "4"
    }
  },
  "variants": [
    {
      "mpn": "BSP52",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bsp52"
  ],
  "discovery_pitch": "BSP52 (Nexperia) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bsp52.kicad_sym",
    "bsp52.kicad_mod",
    "bsp52.glb",
    "bsp52.step",
    "bsp52.lbr",
    "docs/hero.png",
    "docs/bsp52-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T18:10:02.091Z"
}