main
Ray Set visibility: public 9767cd8 4d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "2sc4548",
  "title": "2SC4548",
  "brief": "Changjing Bipolar (BJT), SOT-89-3L. 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",
    "transistors-thyristors",
    "2sc4548",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "2SC4548",
    "manufacturer": "Changjing",
    "package": "SOT-89-3L",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586174749394919424",
    "parts": {
      "symbol": "2sc4548.kicad_sym",
      "footprint": "2sc4548.kicad_mod",
      "model_3d": "2sc4548-hero.glb",
      "model_3d_plain": "2sc4548-etched.glb",
      "model_3d_step": "2sc4548-etched.step",
      "model_3d_step_plain": "2sc4548.step",
      "lbr": "2sc4548.lbr"
    },
    "distributor_links": {
      "lcsc": "C24251"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T21:30:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BASE",
        "type": "input",
        "description": "NPN transistor base terminal; the emitter-base breakdown voltage V(BR)EBO is 5 V minimum at IE=10µA, and VBE(sat) is 1 V max at IC=50mA, IB=5mA."
      },
      {
        "number": "2",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "NPN transistor collector terminal; limited to 400 V VCBO and 400 V VCEO, 200 mA collector current IC, and 500 mW collector power dissipation PC."
      },
      {
        "number": "3",
        "name": "EMITTER",
        "type": "passive",
        "description": "NPN transistor emitter terminal; the emitter-base voltage rating VEBO is 5 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 gives only one package, SOT-89-3L, with pin labels BASE, COLLECTOR, EMITTER and no sep; The datasheet's package diagram text lists pin numbers 1, 2, 3 only as labels. Pin numbers were take"
        ],
        "pages_sent": 1,
        "cost_usd": 0.0116,
        "at": "2026-10-20T21:26:36"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586174749394919424",
        "pages": 1,
        "sha256": "3b3f66e62d088c7e",
        "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": "2sc4548.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          4.5,
          1.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "2sc4548-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          4.5,
          1.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "a69436da7fadd2ee032b0f2399be2f656b599db181136a4fce4ea0c5ad7929b5",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Changjing",
      "Package": "SOT-89-3L",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "3b3f66e62d088c7e8994d750c49de26322811322548de3d1f349e4f9dd6eb87b",
      "rows": [
        {
          "name": "Collector-base breakdown voltage",
          "symbol": "V(BR)CBO",
          "kind": "electrical",
          "unit": "V",
          "min": 400,
          "typ": null,
          "max": null,
          "conditions": "IC=10µA,IE=0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter breakdown voltage",
          "symbol": "V(BR)CEO",
          "kind": "electrical",
          "unit": "V",
          "min": 400,
          "typ": null,
          "max": null,
          "conditions": "IC=1mA,IB=0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Emitter-base breakdown voltage",
          "symbol": "V(BR)EBO",
          "kind": "electrical",
          "unit": "V",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "IE=10µA,IC=0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector cut-off current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VCB=300V,IE=0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Emitter cut-off current",
          "symbol": "IEBO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VEB=4V,IC=0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "DC current gain",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 60,
          "typ": null,
          "max": 200,
          "conditions": "VCE=10V, IC=50mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter saturation voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "IC=50mA,IB=5mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Base-emitter saturation voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "IC=50mA,IB=5mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Transition frequency",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 70,
          "typ": null,
          "max": null,
          "conditions": "VCE=30V,IC=10mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector output capacitance",
          "symbol": "Cob",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "VCB=30V, IE=0, f=1MHz",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Base Voltage",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Emitter-Base Voltage",
          "symbol": "VEBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector Current",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector Power Dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance From Junction To Ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "2sc4548"
  ],
  "discovery_pitch": "2SC4548 (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",
    "2sc4548.kicad_sym",
    "2sc4548.kicad_mod",
    "2sc4548.glb",
    "2sc4548.step",
    "2sc4548.lbr",
    "docs/hero.png",
    "docs/2sc4548-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "2sc4548-hero.glb",
    "2sc4548-hero.overlay.json",
    "2sc4548-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}