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Ray Set visibility: public 7ac7a2c 1d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "2sa950",
  "title": "2SA950",
  "brief": "Changjing Bipolar Transistors - BJT, TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "triode-mos tube-transistor",
    "2sa950",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "2SA950",
    "manufacturer": "Changjing",
    "package": "TO-92",
    "pin_count": 3,
    "category": "Triode/MOS Tube/Transistor",
    "subcategory": "Bipolar Transistors - BJT",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/20e4716ad7267315ee018c2a3abaa2db.pdf",
    "parts": {
      "symbol": "2sa950.kicad_sym",
      "footprint": "2sa950.kicad_mod",
      "model_3d": "2sa950-hero.glb",
      "model_3d_plain": "2sa950-etched.glb",
      "model_3d_step": "2sa950-etched.step",
      "model_3d_step_plain": "2sa950.step",
      "lbr": "2sa950.lbr"
    },
    "distributor_links": {
      "lcsc": "C50229624"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T12:29:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EMITTER",
        "type": "passive",
        "description": "Emitter of the PNP transistor; emitter-base breakdown voltage V(BR)EBO is -5 V minimum at IE=-0.1 mA."
      },
      {
        "number": "2",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "Collector of the PNP transistor; collector-emitter breakdown voltage is -30 V minimum at IC=-10 mA and collector power dissipation is 600 mW."
      },
      {
        "number": "3",
        "name": "BASE",
        "type": "passive",
        "description": "Base of the PNP transistor; collector-base breakdown voltage V(BR)CBO is -35 V minimum at IC=-0.1 mA."
      }
    ],
    "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": [
          "extractor flagged: Datasheet text is partially garbled (symbols and some ratings missing, e.g. collector current and th"
        ],
        "pages_sent": 5,
        "cost_usd": 0.0334,
        "at": "2026-10-31T12:29:38"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/20e4716ad7267315ee018c2a3abaa2db.pdf",
        "pages": 5,
        "sha256": "40332307412d4ab0",
        "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": "2sa950.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          4.83,
          3.745,
          9.8
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "2sa950-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "740fc96c81c16206c2b0734bef6606b8b14f69a1e97a44a5755a2027901532ea",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "TO-92",
      "source_page": 4,
      "D": {
        "nom_mm": 4.45,
        "range_mm": [
          4.2,
          4.7
        ]
      },
      "E1": {
        "nom_mm": 3.5,
        "range_mm": [
          3.3,
          3.7
        ]
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": [
          null,
          null
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "2sa950.step",
        "verdict": "SKIP",
        "reasons": [
          "the datasheet dimensions give no height or body size to compare"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Changjing",
      "Package": "TO-92",
      "Category": "Triode/MOS Tube/Transistor",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "40332307412d4ab08a629b0c2bec21290abd8583705d446585e58126a262ef58",
      "rows": [
        {
          "name": "Collector-base breakdown voltage",
          "symbol": "V(BR)CBO",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -35,
          "conditions": "IC= -0.1mA, IE=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter breakdown voltage",
          "symbol": "V(BR)CEO",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -30,
          "conditions": "IC= -10mA, IB=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter-base breakdown voltage",
          "symbol": "V(BR)EBO",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -5,
          "conditions": "IE= -0.1mA, IC=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector cut-off current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": -0.1,
          "conditions": "VCB= -35V, IE=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter cut-off current",
          "symbol": "IEBO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": -0.1,
          "conditions": "VEB= -5V, IC=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC current gain",
          "symbol": "hFE(1)",
          "kind": "electrical",
          "unit": "",
          "min": 100,
          "typ": null,
          "max": 320,
          "conditions": "VCE=-1V, IC=-100mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC current gain",
          "symbol": "hFE(2)",
          "kind": "electrical",
          "unit": "",
          "min": 35,
          "typ": null,
          "max": null,
          "conditions": "VCE=-1V, IC= -700mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter saturation voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -0.7,
          "conditions": "IC= -500mA, IB= -20mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter-base voltage",
          "symbol": "VBE",
          "kind": "electrical",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": -0.8,
          "conditions": "VCE=-1V, IC=-10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Output Capacitance",
          "symbol": "Cob",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 19,
          "max": null,
          "conditions": "VCB=-10V, IE=0, f=1MHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Transition frequency",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "VCE=-5V, IC=-10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -30,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector Power Dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 600,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "2sa950"
  ],
  "discovery_pitch": "2SA950 (Changjing) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "2sa950.kicad_sym",
    "2sa950.kicad_mod",
    "2sa950.glb",
    "2sa950.step",
    "2sa950.lbr",
    "docs/hero.png",
    "docs/2sa950-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "2sa950-hero.glb",
    "2sa950-hero.overlay.json",
    "2sa950-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}