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Ray Publish 0.1.0 f97c355 2h ago
{
  "slug": "2sa1740",
  "version": "0.1.0",
  "type": "component",
  "description": "Changjiang Electronics Tech (CJ) Bipolar Transistors - BJT, SOT-89-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "transistors",
    "2sa1740",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "2sa1740.kicad_sym",
    "2sa1740.kicad_mod",
    "2sa1740.glb",
    "2sa1740.step",
    "2sa1740.lbr",
    "docs/hero.png",
    "docs/2sa1740-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "2sa1740-hero.glb",
    "2sa1740-hero.overlay.json",
    "2sa1740-etched.glb"
  ],
  "component": {
    "mpn": "2SA1740",
    "manufacturer": "Changjiang Electronics Tech (CJ)",
    "package": "SOT-89-3L",
    "pin_count": 3,
    "category": "Transistors",
    "subcategory": "Bipolar Transistors - BJT",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/79fff8605a024b469e1633c095549d0b.pdf",
    "parts": {
      "symbol": "2sa1740.kicad_sym",
      "footprint": "2sa1740.kicad_mod",
      "model_3d": "2sa1740-hero.glb",
      "model_3d_plain": "2sa1740-etched.glb",
      "model_3d_step": "2sa1740-etched.step",
      "model_3d_step_plain": "2sa1740.step",
      "lbr": "2sa1740.lbr"
    },
    "distributor_links": {
      "lcsc": "C9635"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:09:03Z",
      "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 of the PNP transistor; VEBO max -5 V and emitter cut-off current IEBO max -100 nA at VEB=-4 V."
      },
      {
        "number": "2",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "Collector of the PNP transistor; VCBO and VCEO -400 V max, continuous collector current -200 mA max."
      },
      {
        "number": "3",
        "name": "EMITTER",
        "type": "passive",
        "description": "Emitter of the PNP transistor; total collector dissipation 500 mW max with junction temperature 150 °C max."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 1,
        "cost_usd": 0.02,
        "at": "2026-10-22T22:08:46"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/79fff8605a024b469e1633c095549d0b.pdf",
        "pages": 1,
        "sha256": "4f9e03e443be0592",
        "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": [
      {
        "file": "2sa1740.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "2sa1740-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "sha256": "0c0ac97d18f7b684a857c9285050151d59383121f3489513b0a0b783c237da42",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}