PZTA42

{
  "slug": "pzta42",
  "version": "0.1.0",
  "type": "component",
  "description": "Changjing Bipolar (BJT), SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "pzta42",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "pzta42.kicad_sym",
    "pzta42.kicad_mod",
    "pzta42.glb",
    "pzta42.step",
    "pzta42.lbr",
    "docs/hero.png",
    "docs/pzta42-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "pzta42-hero.glb",
    "pzta42-hero.overlay.json"
  ],
  "component": {
    "mpn": "PZTA42",
    "manufacturer": "Changjing",
    "package": "SOT-223",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586199179102601216",
    "parts": {
      "symbol": "pzta42.kicad_sym",
      "footprint": "pzta42.kicad_mod",
      "model_3d": "pzta42-hero.glb",
      "model_3d_plain": "pzta42.glb",
      "model_3d_step": "pzta42-etched.step",
      "model_3d_step_plain": "pzta42.step",
      "lbr": "pzta42.lbr"
    },
    "distributor_links": {
      "lcsc": "C148121",
      "digikey": "4878-PZTA42TR-ND",
      "mouser": "637-PZTA42"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T11:50:49Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "4878-PZTA42TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "637-PZTA42",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BASE",
        "type": "passive",
        "description": "Base terminal of the PZTA42 NPN transistor; the datasheet gives no separate per-pin limit, and the emitter-base voltage rating is VEBO 6 V."
      },
      {
        "number": "2",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "Collector terminal of the PZTA42 NPN transistor, with collector-emitter voltage VCEO 300 V and continuous collector current IC 0.2 A (absolute maximum ratings)."
      },
      {
        "number": "3",
        "name": "EMITTER",
        "type": "passive",
        "description": "Emitter terminal of the PZTA42 NPN transistor, referenced in the datasheet's emitter-base rating VEBO 6 V and collector-emitter rating VCEO 300 V."
      }
    ],
    "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 only pinout is the SOT-223 pin list on page 1 (1. BASE, 2. COLLECTOR, 3. EMITTER). I"
        ],
        "pages_sent": 4,
        "cost_usd": 0.0271,
        "at": "2026-10-09T11:48:41"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586199179102601216",
        "pages": 4,
        "sha256": "70dd9f37673e0eb5",
        "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": [
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "pzta42-etched.step",
        "role": "eda",
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        "sha256": "733fde5c9df809db15b549b72992711800195a8fe2649ae94edd2bfd50a86afa",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}