CMUT2907A TR PBFREE

{
  "slug": "cmut2907a-tr-pbfree",
  "version": "0.1.0",
  "type": "component",
  "description": "Central Semicon Bipolar (BJT), SOT-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors-thyristors",
    "cmut2907a tr pbfree",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "cmut2907a-tr-pbfree.kicad_sym",
    "cmut2907a-tr-pbfree.kicad_mod",
    "cmut2907a-tr-pbfree.glb",
    "cmut2907a-tr-pbfree.step",
    "cmut2907a-tr-pbfree.lbr",
    "docs/hero.png",
    "docs/cmut2907a-tr-pbfree-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cmut2907a-tr-pbfree-hero.glb",
    "cmut2907a-tr-pbfree-hero.overlay.json",
    "cmut2907a-tr-pbfree-etched.glb"
  ],
  "component": {
    "mpn": "CMUT2907A TR PBFREE",
    "manufacturer": "Central Semicon",
    "package": "SOT-523",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757159926198079488",
    "parts": {
      "symbol": "cmut2907a-tr-pbfree.kicad_sym",
      "footprint": "cmut2907a-tr-pbfree.kicad_mod",
      "model_3d": "cmut2907a-tr-pbfree-hero.glb",
      "model_3d_plain": "cmut2907a-tr-pbfree-etched.glb",
      "model_3d_step": "cmut2907a-tr-pbfree-etched.step",
      "model_3d_step_plain": "cmut2907a-tr-pbfree.step",
      "lbr": "cmut2907a-tr-pbfree.lbr"
    },
    "distributor_links": {
      "lcsc": "C5240500"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T14:49:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Base",
        "type": "input",
        "description": "Base lead of the PNP transistor, with VBE(SAT) of 1.3 V at IC=150 mA, IB=15 mA and 2.6 V at IC=500 mA, IB=50 mA."
      },
      {
        "number": "2",
        "name": "Emitter",
        "type": "passive",
        "description": "Emitter lead of the PNP transistor, with an emitter-base breakdown BVEBO of 5.0 V minimum at IE=10 µA and a maximum VEBO rating of 5.0 V."
      },
      {
        "number": "3",
        "name": "Collector",
        "type": "passive",
        "description": "Collector lead of the PNP transistor, rated for 60 V VCBO and VCEO, 600 mA continuous collector current and 250 mW power dissipation."
      }
    ],
    "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 come from the 'LEAD CODE' list (1) Base, 2) Emitter, 3) Collector) on page 2. The SOT-52; Page 4-5 (PDN01276) states all SOT-523 package devices are discontinued and classified End of Life, ; The datasheet's ordering note says PBFREE is a plating suffix; the text does not define 'TR' as a ta"
        ],
        "pages_sent": 5,
        "cost_usd": 0.0317,
        "at": "2026-10-18T14:46:00"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757159926198079488",
        "pages": 5,
        "sha256": "b585d16608f7d57a",
        "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"
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    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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          0.8
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f0c6a9d03722b05939674b7c00b37e2bc6e402d0c3378fdc7c9d7a322b426e87",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cmut2907a-tr-pbfree-etched.step",
        "role": "eda",
        "up": "Z",
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        "seat": "z = 0",
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        "centre_offset_mm": 0.0,
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        "sha256": "b76e0a0eab2fd56a9490a1d9cceb1726852ce7224c6539d5356481a4db2842cd",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  }
}