main
Ray Set visibility: public 6174800 6h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "bc546btf",
  "title": "BC546BTF",
  "brief": "onsemi Bipolar Transistors - BJT, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "manufacturer": "onsemi",
    "package": "TO-92-3",
    "pin_count": 3,
    "category": "Transistors",
    "subcategory": "Bipolar Transistors - BJT",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/bc546btf-d.pdf",
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      "lbr": "bc546btf.lbr"
    },
    "distributor_links": {
      "lcsc": "C900795",
      "digikey": "BC546BTFTR-ND",
      "mouser": "512-BC546BTF"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T10:20:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "BC546BTFTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "512-BC546BTF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Collector",
        "type": "passive",
        "description": "Collector of the NPN transistor; the datasheet rates collector current (DC) at 100 mA maximum and collector-base voltage at 80 V for BC546."
      },
      {
        "number": "2",
        "name": "Base",
        "type": "passive",
        "description": "Base of the NPN transistor; the datasheet rates emitter-base voltage at 6 V for BC546 (BC546/BC547) and 5 V for BC548/BC549/BC550."
      },
      {
        "number": "3",
        "name": "Emitter",
        "type": "passive",
        "description": "Emitter of the NPN transistor; the datasheet's absolute maximum ratings limit it through the emitter-base voltage (6 V for BC546, 5 V for BC548/BC549/BC550) and junction temperature of 150 °C."
      }
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        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "cost_usd": 0.0419,
        "at": "2026-11-05T10:20:23"
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      "datasheet": {
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        "pages": 8,
        "sha256": "e75c6bde7cc28fa7",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "role": "plain",
        "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": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TO-92-3",
      "Category": "Transistors",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "e75c6bde7cc28fa7c3cc2edb83f28fdf7453caac19e54ec582b80115b69ec2ab",
      "rows": [
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          "name": "Collector-Base Voltage (BC546)",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 80,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Voltage (BC546)",
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          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 65,
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        },
        {
          "name": "Emitter-Base Voltage (BC546/BC547)",
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          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Collector Current (DC)",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector Power Dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector Cut-Off Current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "VCB = 30 V, IE = 0",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 110,
          "typ": null,
          "max": 800,
          "conditions": "VCE = 5 V, IC = 2 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain (classification B)",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 200,
          "typ": null,
          "max": 450,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Saturation Voltage",
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          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 90,
          "max": 250,
          "conditions": "IC = 10 mA, IB = 0.5 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Saturation Voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 250,
          "max": 600,
          "conditions": "IC = 100 mA, IB = 5 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter Saturation Voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 700,
          "conditions": "IC = 10 mA, IB = 0.5 mA",
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        },
        {
          "name": "Base-Emitter Saturation Voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 900,
          "conditions": "IC = 100 mA, IB = 5 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter On Voltage",
          "symbol": "VBE(on)",
          "kind": "electrical",
          "unit": "mV",
          "min": 580,
          "typ": 660,
          "max": 700,
          "conditions": "VCE = 5 V, IC = 2 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter On Voltage",
          "symbol": "VBE(on)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 720,
          "conditions": "VCE = 5 V, IC = 10 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Current Gain Bandwidth Product",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 300,
          "max": null,
          "conditions": "VCE = 5 V, IC = 10 mA, f = 100 MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitance",
          "symbol": "Cob",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 3.5,
          "max": 6,
          "conditions": "VCB = 10 V, IE = 0, f = 1 MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Capacitance",
          "symbol": "Cib",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 9,
          "max": null,
          "conditions": "VEB = 0.5 V, IC = 0, f = 1 MHz",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Noise Figure (BC546/BC547/BC548 row)",
          "symbol": "NF",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 2,
          "max": 10,
          "conditions": "VCE = 5 V, IC = 200 μA, f = 1 kHz, RG = 2 kΩ",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
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    "bc546btf"
  ],
  "discovery_pitch": "BC546BTF (onsemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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