2N3906

{
  "schema_version": 1,
  "type": "component",
  "slug": "2n3906",
  "title": "2N3906",
  "brief": "onsemi general-purpose PNP BJT, TO-92. 40 V, 200 mA, hFE 100-300. Complement of 2N3904. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "transistor",
    "bjt",
    "pnp",
    "to-92",
    "onsemi"
  ],
  "component": {
    "mpn": "2N3906",
    "manufacturer": "onsemi",
    "package": "TO-92",
    "pin_count": 3,
    "category": "Transistor",
    "subcategory": "PNP BJT (general purpose)",
    "datasheet": "https://media.digikey.com/pdf/Data%20Sheets/Fairchild%20PDFs/2N3906.pdf",
    "parts": {
      "symbol": "2n3906.kicad_sym",
      "footprint": "2n3906.kicad_mod",
      "model_3d": "2n3906-etched.glb",
      "model_3d_plain": "2n3906.glb",
      "lbr": "2n3906.lbr",
      "model_3d_step": "2n3906-etched.step",
      "model_3d_step_plain": "2n3906.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "E",
        "type": "passive",
        "description": "Emitter of the PNP BJT. VEBO breakdown = 5.0 V (reverse). In normal PNP operation the emitter is the most positive terminal, with current flowing from emitter to collector."
      },
      {
        "number": "2",
        "name": "B",
        "type": "input",
        "description": "Base of the PNP BJT. Control terminal; pulling the base below the emitter by ~0.65-0.85 V (VBE(sat)) forward-biases the B-E junction and turns the transistor on. IBL (base cutoff) = 50 nA max at VBE = 3.0 V."
      },
      {
        "number": "3",
        "name": "C",
        "type": "passive",
        "description": "Collector of the PNP BJT. VCEO breakdown = 40 V (reverse), VCBO = 40 V, IC = 200 mA continuous. VCE(sat) = 0.25 V max at IC = 10 mA, IB = 1.0 mA. In normal PNP operation the collector sinks current toward the more-negative supply."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://media.digikey.com/pdf/Data%20Sheets/Fairchild%20PDFs/2N3906.pdf",
        "pages": 6,
        "sha256": "0173a9cdd84dfe57",
        "source_tier": "mfr"
      },
      "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": [
      {
        "file": "2n3906.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          4.83,
          3.745,
          9.8
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "f0b61c32ecbf0067157adc5a3d4966ceadf5d6dafe93c51af35f76c41c71a54a",
        "checked": "2026-10-07",
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        "zmin_mm": -2.5,
        "centre_offset_mm": 0.542,
        "footprint_binding": "identity",
        "sha256": "2f321c2b118b109b8fde40dfd4ea9a6764e12ff93a6ab1da09460c34b85a965f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "PNP bipolar transistor",
      "Collector-emitter (VCEO)": "-40 V",
      "Collector current (IC)": "-200 mA",
      "DC gain (hFE)": "100-300",
      "Transition freq (fT)": "250 MHz",
      "Power dissipation": "625 mW",
      "Pinout": "E-B-C (pin 1 = emitter)",
      "Package": "TO-92"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0173a9cdd84dfe57",
      "rows": [
        {
          "name": "Collector-Emitter Breakdown Voltage",
          "symbol": "V(BR)CEO",
          "kind": "electrical",
          "unit": "V",
          "min": 40,
          "typ": null,
          "max": null,
          "conditions": "IC = 1.0 mA, IB = 0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector-Base Breakdown Voltage",
          "symbol": "V(BR)CBO",
          "kind": "electrical",
          "unit": "V",
          "min": 40,
          "typ": null,
          "max": null,
          "conditions": "IC = 10 µA, IE = 0",
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          "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 = 10 µA, IC = 0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Base Cutoff Current",
          "symbol": "IBL",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "VCE = 30 V, VBE = 3.0 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Cutoff Current",
          "symbol": "ICEX",
          "kind": "electrical",
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          "typ": null,
          "max": 50,
          "conditions": "VCE = 30 V, VBE = 3.0 V",
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        },
        {
          "name": "DC Current Gain",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 60,
          "typ": null,
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          "conditions": "IC = 0.1 mA, VCE = 1.0 V",
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        {
          "name": "DC Current Gain",
          "symbol": "hFE",
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          "unit": "",
          "min": 80,
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          "conditions": "IC = 1.0 mA, VCE = 1.0 V",
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        {
          "name": "DC Current Gain",
          "symbol": "hFE",
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          "unit": "",
          "min": 100,
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          "conditions": "IC = 10 mA, VCE = 1.0 V",
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        },
        {
          "name": "DC Current Gain",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 30,
          "typ": null,
          "max": null,
          "conditions": "IC = 100 mA, VCE = 1.0 V",
          "source_page": 2,
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        {
          "name": "DC Current Gain",
          "symbol": "hFE",
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        },
        {
          "name": "Collector-Emitter Saturation Voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.25,
          "conditions": "IC = 10 mA, IB = 1.0 mA",
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        },
        {
          "name": "Collector-Emitter Saturation Voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IC = 50 mA, IB = 5.0 mA",
          "source_page": 2,
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        },
        {
          "name": "Base-Emitter Saturation Voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.65,
          "typ": null,
          "max": 0.85,
          "conditions": "IC = 10 mA, IB = 1.0 mA",
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        },
        {
          "name": "Base-Emitter Saturation Voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.95,
          "conditions": "IC = 50 mA, IB = 5.0 mA",
          "source_page": 2,
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        },
        {
          "name": "Current Gain - Bandwidth Product",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 250,
          "typ": null,
          "max": null,
          "conditions": "IC = 10 mA, VCE = 20 V, f = 100 MHz",
          "source_page": 2,
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        },
        {
          "name": "Output Capacitance",
          "symbol": "Cobo",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 4.5,
          "conditions": "VCB = 5.0 V, IE = 0, f = 100 kHz",
          "source_page": 2,
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        },
        {
          "name": "Input Capacitance",
          "symbol": "Cibo",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VEB = 0.5 V, IC = 0, f = 100 kHz",
          "source_page": 2,
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        },
        {
          "name": "Noise Figure",
          "symbol": "NF",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "IC = 100 µA, VCE = 5.0 V, RS = 1.0 kΩ, f = 10 Hz to 15.7 kHz",
          "source_page": 2,
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        },
        {
          "name": "Delay Time",
          "symbol": "td",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
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          "max": 35,
          "conditions": "VCC = 3.0 V, VBE = 0.5 V",
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        {
          "name": "Rise Time",
          "symbol": "tr",
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          "conditions": "IC = 10 mA, IB1 = 1.0 mA",
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          "name": "Storage Time",
          "symbol": "ts",
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          "conditions": "VCC = 3.0 V, IC = 10mA",
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          "name": "Fall Time",
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          "kind": "electrical",
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          "conditions": "IB1 = IB2 = 1.0 mA",
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        {
          "name": "Collector-Emitter Voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
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          "typ": null,
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          "conditions": "",
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          "name": "Collector-Base Voltage",
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          "conditions": "",
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        {
          "name": "Collector Current - Continuous",
          "symbol": "IC",
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          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 1,
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        {
          "name": "Operating and Storage Junction Temperature Range",
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          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
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        {
          "name": "Total Device Dissipation",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
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          "max": 625,
          "conditions": "TA = 25°C",
          "source_page": 1,
          "source": "datasheet"
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        {
          "name": "Thermal Resistance, Junction to Case",
          "symbol": "RθJC",
          "kind": "thermal",
          "unit": "°C/W",
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          "max": 83.3,
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        {
          "name": "Thermal Resistance, Junction to Ambient",
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      ]
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    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "2n3906",
    "pnp transistor",
    "general purpose pnp bjt",
    "2n3904 complement"
  ],
  "discovery_pitch": "2N3906 general-purpose PNP bipolar transistor (TO-92) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}