BC856BS

{
  "schema_version": 1,
  "type": "component",
  "slug": "bc856bs",
  "title": "BC856BS",
  "brief": "Nexperia Bipolar (BJT), SOT-363. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "transistors-thyristors",
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  "component": {
    "mpn": "BC856BS",
    "manufacturer": "Nexperia",
    "package": "SOT-363",
    "pin_count": 6,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://assets.nexperia.com/documents/data-sheet/BC856BS.pdf",
    "parts": {
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      "lbr": "bc856bs.lbr"
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    "distributor_links": {
      "lcsc": "C417380"
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
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      "mouser": {
        "pn": null,
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    },
    "pins": [
      {
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        "name": "E1",
        "type": "passive",
        "description": "Emitter of TR1 (first PNP transistor in the pair); per-transistor limits are VEBO -6 V and IC -100 mA (DC), peak ICM -200 mA."
      },
      {
        "number": "2",
        "name": "B1",
        "type": "passive",
        "description": "Base of TR1; per-transistor limits are peak base current IBM -200 mA (single pulse, tp ≤ 1 ms) and VEBO -6 V."
      },
      {
        "number": "3",
        "name": "C2",
        "type": "passive",
        "description": "Collector of TR2 (second PNP transistor in the pair); per-transistor limits are VCBO -80 V and VCEO -65 V."
      },
      {
        "number": "4",
        "name": "E2",
        "type": "passive",
        "description": "Emitter of TR2; per-transistor limits are VEBO -6 V and IC -100 mA (DC), peak ICM -200 mA."
      },
      {
        "number": "5",
        "name": "B2",
        "type": "passive",
        "description": "Base of TR2; per-transistor limits are peak base current IBM -200 mA (single pulse, tp ≤ 1 ms) and VEBO -6 V."
      },
      {
        "number": "6",
        "name": "C1",
        "type": "passive",
        "description": "Collector of TR1; per-transistor limits are VCBO -80 V and VCEO -65 V."
      }
    ],
    "provenance": {
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet gives the pinning only as a table with no pin-type classification; types are assigned ; Pin 1 to 6 mapping is given in Table 2 (page 2) and matches the top-view outline (1 2 3 / 6 5 4). Pa; Limit values in the descriptions are per transistor (Table 5, page 3), not per pin of the device pac"
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        "pages_sent": 11,
        "cost_usd": 0.0501,
        "at": "2026-10-09T09:48:44"
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      "datasheet": {
        "url": "https://assets.nexperia.com/documents/data-sheet/BC856BS.pdf",
        "pages": 11,
        "sha256": "29ece727073dabf6",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2,
          1.1
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "045cc95e18ee7a13d1623c3ce6604fc833049bdb4f952f68c26e3c5767d122e4",
        "checked": "2026-10-09",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "SOT-363",
      "Category": "Transistors/Thyristors",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
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          "name": "Collector-base voltage",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -80,
          "conditions": "open emitter; per transistor",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -65,
          "conditions": "open base; per transistor",
          "source_page": 3,
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        },
        {
          "name": "Emitter-base voltage",
          "symbol": "VEBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -6,
          "conditions": "open collector; per transistor",
          "source_page": 3,
          "source": "datasheet"
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          "name": "Collector current",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": -100,
          "conditions": "per transistor",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Peak collector current",
          "symbol": "ICM",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": -200,
          "conditions": "per transistor",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Peak base current",
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          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
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          "conditions": "single pulse; tp ≤ 1 ms",
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        },
        {
          "name": "Total power dissipation (per transistor)",
          "symbol": "Ptot",
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          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Tamb ≤ 25 °C [1]",
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        {
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          "symbol": "Ptot",
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          "max": 300,
          "conditions": "Tamb ≤ 25 °C [1]",
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        {
          "name": "Junction temperature",
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          "kind": "absolute_maximum",
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          "conditions": "",
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        {
          "name": "Ambient temperature",
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          "unit": "°C",
          "min": -55,
          "typ": null,
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        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
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          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Thermal resistance junction to ambient (per transistor)",
          "symbol": "Rth(j-a)",
          "kind": "thermal",
          "unit": "K/W",
          "min": null,
          "typ": null,
          "max": 625,
          "conditions": "in free air [1]",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to solder point (per transistor)",
          "symbol": "Rth(j-sp)",
          "kind": "thermal",
          "unit": "K/W",
          "min": null,
          "typ": null,
          "max": 230,
          "conditions": "",
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        {
          "name": "Thermal resistance junction to ambient (per device)",
          "symbol": "Rth(j-a)",
          "kind": "thermal",
          "unit": "K/W",
          "min": null,
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          "max": 416,
          "conditions": "in free air [1]",
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          "source": "datasheet"
        },
        {
          "name": "Collector-base cut-off current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": -15,
          "conditions": "VCB = -50 V; IE = 0 A; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Collector-base cut-off current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": -5,
          "conditions": "VCB = -30 V; IE = 0 A; Tj = 150 °C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Emitter-base cut-off current",
          "symbol": "IEBO",
          "kind": "electrical",
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          "min": null,
          "typ": null,
          "max": -100,
          "conditions": "VEB = -6 V; IC = 0 A; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "DC current gain",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 200,
          "typ": 290,
          "max": 450,
          "conditions": "VCE = -5 V; IC = -2 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter saturation voltage",
          "symbol": "VCEsat",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": -55,
          "max": -100,
          "conditions": "IC = -10 mA; IB = -0.5 mA; Tamb = 25 °C",
          "source_page": 5,
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        },
        {
          "name": "Collector-emitter saturation voltage",
          "symbol": "VCEsat",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": -200,
          "max": -300,
          "conditions": "IC = -100 mA; IB = -5 mA; pulsed; tp ≤ 300 µs; δ ≤ 0.02; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Base-emitter saturation voltage",
          "symbol": "VBEsat",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": -755,
          "max": -850,
          "conditions": "IC = -10 mA; IB = -0.5 mA; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Base-emitter voltage",
          "symbol": "VBE",
          "kind": "electrical",
          "unit": "mV",
          "min": -600,
          "typ": -650,
          "max": -750,
          "conditions": "VCE = -5 V; IC = -2 mA; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Base-emitter voltage",
          "symbol": "VBE",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": -820,
          "conditions": "VCE = -5 V; IC = -10 mA; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Transition frequency",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "VCE = -5 V; IC = -10 mA; f = 100 MHz; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "BC856BS (Nexperia) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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