main
Ray Set visibility: public c018639 3h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "ad-bc848",
  "title": "AD-BC848",
  "brief": "Changjing Bipolar Transistors - BJT, SOT-23. 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",
    "ad-bc848",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "AD-BC848",
    "manufacturer": "Changjing",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Triode/MOS Tube/Transistor",
    "subcategory": "Bipolar Transistors - BJT",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/abc058ae6145f1c1e14f55cef3c7c427.pdf",
    "parts": {
      "symbol": "ad-bc848.kicad_sym",
      "footprint": "ad-bc848.kicad_mod",
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      "model_3d_plain": "ad-bc848-etched.glb",
      "model_3d_step": "ad-bc848-etched.step",
      "model_3d_step_plain": "ad-bc848.step",
      "lbr": "ad-bc848.lbr"
    },
    "distributor_links": {
      "lcsc": "C2975620"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T21:51:29Z",
      "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 terminal of the NPN transistor; emitter-base voltage VEBO max 6 V and emitter cut-off current IEBO max 0.1 µA at VEB = 5 V."
      },
      {
        "number": "2",
        "name": "EMITTER",
        "type": "passive",
        "description": "Emitter terminal of the NPN transistor, the common return for the 100 mA continuous collector current (IC max 0.1 A)."
      },
      {
        "number": "3",
        "name": "COLLECTOR",
        "type": "passive",
        "description": "Collector terminal of the NPN transistor; AD-BC848 has VCEO 30 V and VCBO 30 V max, IC max 0.1 A, and PC 200 mW."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The SOT-23 pin assignment (1 Base, 2 Emitter, 3 Collector) comes from the page 1 package drawing. Pi",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 6,
        "cost_usd": 0.1696,
        "at": "2026-10-22T21:51:18"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/abc058ae6145f1c1e14f55cef3c7c427.pdf",
        "pages": 6,
        "sha256": "8c8ea58b9f8dc1c0",
        "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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        "file": "ad-bc848.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ad-bc848-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "centre_offset_mm": 0,
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        "sha256": "7891e44dfbdb5e86e78a1a5cbde988d642c11aaaf73f3602693a487f6c6e53df",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Changjing",
      "Package": "SOT-23",
      "Category": "Triode/MOS Tube/Transistor",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "8c8ea58b9f8dc1c07833009ee2218271a879fd3e17902eff805bfcf4bd401507",
      "rows": [
        {
          "name": "Collector-base voltage",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "Tj = 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "Tj = 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Emitter-base voltage",
          "symbol": "VEBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "Tj = 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector continuous current",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "Tj = 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector power dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Tj = 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating junction and storage temperature range",
          "symbol": "Tj, Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance from junction to ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 625,
          "conditions": "Device mounted on 1 inch2 FR-4 board with 1oz. copper, still air, Ta = 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-base breakdown voltage",
          "symbol": "VCBO",
          "kind": "electrical",
          "unit": "V",
          "min": 30,
          "typ": null,
          "max": null,
          "conditions": "IC = 10µA, IE = 0A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter breakdown voltage",
          "symbol": "VCEO",
          "kind": "electrical",
          "unit": "V",
          "min": 30,
          "typ": null,
          "max": null,
          "conditions": "IC = 10mA, IB = 0A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter-base breakdown voltage",
          "symbol": "VEBO",
          "kind": "electrical",
          "unit": "V",
          "min": 6,
          "typ": null,
          "max": null,
          "conditions": "IE = 10µA, IC = 0A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector cutoff current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VCB = 30V, IE = 0A",
          "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 = 0A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter saturation voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "IC = 100mA, IB = 5mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base-emitter saturation voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.1,
          "conditions": "IC = 100mA, IB = 5mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Transition frequency",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "VCE = 5V, IC = 10mA, f = 100MHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector output capacitance",
          "symbol": "Cob",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 4.5,
          "conditions": "VCB = 10V, f = 1MHz",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
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  "discovery_triggers": [
    "ad-bc848"
  ],
  "discovery_pitch": "AD-BC848 (Changjing) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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  "files": [
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    "ad-bc848.step",
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  "visibility": {
    "public": true
  }
}