main
Ray Set visibility: public 50d990e
{
  "schema_version": 1,
  "type": "component",
  "slug": "bc858cmtf",
  "title": "BC858CMTF",
  "brief": "onsemi 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",
    "transistors",
    "bc858cmtf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BC858CMTF",
    "manufacturer": "onsemi",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Transistors",
    "subcategory": "Bipolar Transistors - BJT",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/bc858cmtf-d.pdf",
    "parts": {
      "symbol": "bc858cmtf.kicad_sym",
      "footprint": "bc858cmtf.kicad_mod",
      "model_3d": "bc858cmtf-hero.glb",
      "model_3d_plain": "bc858cmtf.glb",
      "model_3d_step": "bc858cmtf-etched.step",
      "model_3d_step_plain": "bc858cmtf.step",
      "lbr": "bc858cmtf.lbr"
    },
    "distributor_links": {
      "lcsc": "C184403",
      "digikey": "2832-BC858CMTFTR-ND",
      "mouser": "512-BC858CMTF"
    },
    "distributor_check": {
      "checked_at": "2026-11-13T07:32:52Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2832-BC858CMTFTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "512-BC858CMTF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Base",
        "type": "input",
        "description": "Base of the PNP transistor; the datasheet lists Emitter-Base voltage max of -5 V and DC collector current max of -100 mA."
      },
      {
        "number": "2",
        "name": "Emitter",
        "type": "passive",
        "description": "Emitter of the PNP transistor, pin 2 per the SOT-23 pin definitions in the ordering table."
      },
      {
        "number": "3",
        "name": "Collector",
        "type": "passive",
        "description": "Collector of the PNP transistor; BC858 has Collector-Emitter voltage max of -30 V and Collector-Base voltage max of -30 V, with 310 mW collector power dissipation."
      }
    ],
    "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": 7,
        "cost_usd": 0.0343,
        "at": "2026-11-13T07:32:41"
      },
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/bc858cmtf-d.pdf",
        "pages": 7,
        "sha256": "efea6827baea1f4c",
        "source_tier": "mfr"
      },
      "cad": "land: KiCad official (CC-BY-SA 4.0); 3D: generated from the datasheet",
      "model_3d_generated": {
        "generator": "factory/gen_pkg3d.py",
        "family": "SOT",
        "height_mm": 1.0499999999999998,
        "height_basis": "datasheet A, midpoint of min and max",
        "standoff_mm": 0.05,
        "standoff_basis": "family nominal (no datasheet A1 read)",
        "lead_width_mm": 0.36,
        "lead_width_basis": "default: 0.6 x pad width across the lead, at most 0.45 x pitch 1.90 mm; a tab 0.9 x its width (no datasheet b read)",
        "lead_thickness_mm": 0.2,
        "lead_thickness_basis": "default for pitch 1.90 mm, height 1.05 mm (no datasheet c read)"
      },
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bc858cmtf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.4,
          2.9,
          1.05
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ad55ca6b65b491197f507c302caa9585280d32406482718a0b1113f08308d3f8",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bc858cmtf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.4,
          2.9,
          1.05
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e2ec4210708e11271cf789abe36fb20ccd4e585582748ab367bdcc20db045ea2",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SOT-23",
      "source_page": 5,
      "D": {
        "nom_mm": 2.9,
        "range_mm": [
          null,
          null
        ]
      },
      "E1": {
        "nom_mm": 1.3,
        "range_mm": [
          null,
          null
        ]
      },
      "E": {
        "nom_mm": 2.4,
        "range_mm": [
          null,
          null
        ]
      },
      "e": {
        "nom_mm": 0.95,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.05,
        "range_mm": [
          0.96,
          1.14
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "bc858cmtf.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOT-23",
      "Category": "Transistors",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "efea6827baea1f4cda522f9dcfe70e0e7f0587b51042ff3079fac3cca1afaf06",
      "rows": [
        {
          "name": "Collector-Base Voltage",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -30,
          "typ": null,
          "max": null,
          "conditions": "BC858/859",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -30,
          "typ": null,
          "max": null,
          "conditions": "BC858/859",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Emitter-Base Voltage",
          "symbol": "VEBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -5,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Current (DC)",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -100,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Power Dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 310,
          "conditions": "Ta=25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Cut-off Current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": -15,
          "conditions": "VCB=-30V, IE=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain (class C)",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 420,
          "typ": null,
          "max": 800,
          "conditions": "VCE=-5V, IC=-2mA; classification C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Saturation Voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": -90,
          "max": -250,
          "conditions": "IC=-10mA, IB=-0.5mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Saturation Voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": -300,
          "max": -650,
          "conditions": "IC=-100mA, IB=-5mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter On Voltage",
          "symbol": "VBE(on)",
          "kind": "electrical",
          "unit": "mV",
          "min": -600,
          "typ": -660,
          "max": -750,
          "conditions": "VCE=-5V, IC=-2mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter On Voltage",
          "symbol": "VBE(on)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": -800,
          "max": null,
          "conditions": "VCE=-5V, IC=-10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Noise Figure",
          "symbol": "NF",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 2,
          "max": 10,
          "conditions": "VCE=-5V, IC=-200µA, RG=2KΩ, f=1KHz; BC856/857/858",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter Saturation Voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": -700,
          "max": null,
          "conditions": "IC=-10mA, IB=-0.5mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter Saturation Voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": -900,
          "max": null,
          "conditions": "IC=-100mA, IB=-5mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Current Gain Bandwidth Product",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "VCE=-5V, IC=-10mA, f=100MHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitance",
          "symbol": "Cob",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 6,
          "max": null,
          "conditions": "VCB=-10V, IE=0, f=1MHz",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bc858cmtf"
  ],
  "discovery_pitch": "BC858CMTF (onsemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bc858cmtf.kicad_sym",
    "bc858cmtf.kicad_mod",
    "bc858cmtf.glb",
    "bc858cmtf.step",
    "bc858cmtf.lbr",
    "docs/hero.png",
    "docs/bc858cmtf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bc858cmtf-hero.glb",
    "bc858cmtf-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}