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Ray Set visibility: public 18f8efa 17d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "bc817w",
  "title": "BC817W",
  "brief": "Nexperia Bipolar (BJT), SOT-323-3. 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",
    "bc817w",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BC817W",
    "manufacturer": "Nexperia",
    "package": "SOT-323-3",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912868259467264",
    "parts": {
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      "footprint": "bc817w.kicad_mod",
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      "model_3d_step": "bc817w-etched.step",
      "model_3d_step_plain": "bc817w.step",
      "lbr": "bc817w.lbr"
    },
    "distributor_links": {
      "lcsc": "C549455"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T22:04:47Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "passive",
        "description": "Base terminal of the NPN transistor; peak base current IBM is limited to 200 mA (single pulse, tp ≤ 1 ms, Tamb = 25 °C)."
      },
      {
        "number": "2",
        "name": "E",
        "type": "passive",
        "description": "Emitter terminal of the NPN transistor; emitter-base voltage VEBO is limited to 5 V (open collector, Tamb = 25 °C)."
      },
      {
        "number": "3",
        "name": "C",
        "type": "passive",
        "description": "Collector terminal of the NPN transistor; collector current IC is limited to 500 mA and collector-emitter voltage VCEO to 45 V (open base, Tamb = 25 °C)."
      }
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        "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 pin names and functions (B, E, C) but does not state electrical direction; KiCad; Pinning is given in Table 3 on page 2 for the SOT323 package; the pin numbering shown is 1 = B, 2 = "
        ],
        "pages_sent": 13,
        "cost_usd": 0.0496,
        "at": "2026-10-16T22:02:20"
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        "pages": 13,
        "sha256": "d9aba599bcbb8819",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "acbf75a28fe41aa90efb38cd2b78220968d6eb6ebae1625dfd532dbeb268fece",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "role": "eda",
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        "centre_offset_mm": 0,
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        "sha256": "8c4c825a258d7ddcd5aec489d599366958d96698dd7a00f222c856aa1c1c9061",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Nexperia",
      "Package": "SOT-323-3",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "characteristics": {
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      "source": "datasheet",
      "datasheet_sha256": "d9aba599bcbb8819eaf036ee12ccce598bb650bd1bb014b3289ff7bc8a8a9b5f",
      "rows": [
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          "unit": "V",
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          "typ": null,
          "max": 50,
          "conditions": "open emitter; Tamb = 25 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
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          "max": 45,
          "conditions": "open base; Tamb = 25 °C",
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          "source": "datasheet"
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        {
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        },
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          "conditions": "Tamb = 25 °C",
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          "source": "datasheet"
        },
        {
          "name": "peak collector current",
          "symbol": "ICM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "single pulse; tp ≤ 1 ms; Tamb = 25 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "peak base current",
          "symbol": "IBM",
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        },
        {
          "name": "total power dissipation",
          "symbol": "Ptot",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
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          "conditions": "Tamb ≤ 25 °C; FR4 PCB, standard footprint (notes 1, 2)",
          "source_page": 3,
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        {
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          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 290,
          "conditions": "FR4 PCB, mounting pad for collector 1 cm2 (note 3)",
          "source_page": 3,
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        {
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          "typ": null,
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        {
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        },
        {
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          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "thermal resistance from junction to ambient",
          "symbol": "Rth(j-a)",
          "kind": "thermal",
          "unit": "K/W",
          "min": null,
          "typ": null,
          "max": 625,
          "conditions": "in free air; FR4 PCB, single-sided copper, standard footprint (note 1)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "thermal resistance from junction to ambient",
          "symbol": "Rth(j-a)",
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          "conditions": "FR4 PCB, mounting pad for collector 1 cm2 (note 3)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "collector-base breakdown voltage",
          "symbol": "V(BR)CBO",
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          "typ": null,
          "max": null,
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          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "collector-emitter breakdown voltage",
          "symbol": "V(BR)CEO",
          "kind": "electrical",
          "unit": "V",
          "min": 45,
          "typ": null,
          "max": null,
          "conditions": "IC = 10 mA; IE = 0 A; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "emitter-base breakdown voltage",
          "symbol": "V(BR)EBO",
          "kind": "electrical",
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          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "IE = 100 µA; IC = 0 A; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "collector-base cut-off current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "VCB = 20 V; IE = 0 A; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "collector-base cut-off current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
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          "conditions": "VCB = 20 V; IE = 0 A; Tj = 150 °C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "emitter-base cut-off current",
          "symbol": "IEBO",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "VEB = 5 V; IC = 0 A; Tamb = 25 °C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "DC current gain (BC817W)",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 100,
          "typ": null,
          "max": 600,
          "conditions": "VCE = 1 V; IC = 100 mA; Tamb = 25 °C; pulsed; tp ≤ 300 μs; δ ≤ 0.02",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "DC current gain",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 40,
          "typ": null,
          "max": null,
          "conditions": "VCE = 1 V; IC = 500 mA; Tamb = 25 °C; pulsed; tp ≤ 300 μs; δ ≤ 0.02",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "collector-emitter saturation voltage",
          "symbol": "VCEsat",
          "kind": "electrical",
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          "min": null,
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          "max": 700,
          "conditions": "IC = 500 mA; IB = 50 mA; Tamb = 25 °C; pulsed; tp ≤ 300 μs; δ ≤ 0.02",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "base-emitter voltage",
          "symbol": "VBE",
          "kind": "electrical",
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          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "VCE = 1 V; IC = 500 mA; Tamb = 25 °C; pulsed; tp ≤ 300 μs; δ ≤ 0.02",
          "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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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "bc817w"
  ],
  "discovery_pitch": "BC817W (Nexperia) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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}