MMBT2222A NPN Transistor

{
  "schema_version": 1,
  "type": "component",
  "slug": "mmbt2222a",
  "title": "MMBT2222A NPN Transistor",
  "brief": "General-purpose 40 V NPN bipolar transistor in SOT-23, the surface-mount 2N2222A.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "transistor",
    "bjt",
    "npn",
    "switching",
    "sot-23",
    "diodes"
  ],
  "component": {
    "mpn": "MMBT2222A",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Discrete Semiconductor",
    "subcategory": "Bipolar Transistor (BJT)",
    "datasheet": "https://www.diodes.com/assets/Datasheets/MMBT2222A.pdf",
    "parts": {
      "symbol": "mmbt2222a.kicad_sym",
      "footprint": "mmbt2222a.kicad_mod",
      "model_3d": "mmbt2222a-etched.glb",
      "model_3d_plain": "mmbt2222a.glb",
      "lbr": "mmbt2222a.lbr",
      "model_3d_step": "mmbt2222a-etched.step",
      "model_3d_step_plain": "mmbt2222a.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "input",
        "description": "Base terminal of the NPN BJT. Drives collector current via hFE (typ 100-300 at IC=150mA, VCE=10V); VBE(sat) ~ 1.2V max at IC=150mA/IB=15mA. Absolute max VEBO = 6.0V, IBM = 200mA."
      },
      {
        "number": "2",
        "name": "E",
        "type": "passive",
        "description": "Emitter terminal of the NPN BJT. Common return for collector and base currents. Absolute max VEBO = 6.0V. In a typical NPN switching/amplifier configuration this pin is tied to (or referenced from) the low-side supply."
      },
      {
        "number": "3",
        "name": "C",
        "type": "passive",
        "description": "Collector terminal of the NPN BJT. Absolute max VCBO = 75V, VCEO = 40V; IC = 600mA continuous, ICM = 800mA peak. VCE(sat) < 0.3V at IC = 150mA, IB = 15mA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.diodes.com/assets/Datasheets/MMBT2222A.pdf",
        "pages": 7,
        "sha256": "02047f112848a0d2",
        "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"
    },
    "models_3d": [
      {
        "file": "mmbt2222a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mmbt2222a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5acfa358c33bfe5ceebbe237b360b69071077834922774c511c82f8a7220cd90",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "NPN bipolar transistor",
      "Collector-emitter voltage (VCEO)": "40 V",
      "Collector current (IC)": "600 mA continuous",
      "hFE": "100 to 300 at IC = 150 mA",
      "Transition frequency (fT)": "300 MHz min",
      "Power dissipation": "350 mW",
      "Operating temperature": "-55 C to 150 C"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "NPN switch",
    "small-signal transistor",
    "load driver",
    "2N2222 SMD"
  ],
  "discovery_pitch": "The surface-mount version of the classic 2N2222A: a 40 V, 600 mA NPN for switching and small-signal amplification.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "mmbt2222a.lbr",
    "docs/hero.png",
    "docs/mmbt2222a-datasheet.pdf",
    "viewers/symbol.html",
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  "variants": [
    {
      "mpn": "MMBT2222A-7-F",
      "kind": "unknown"
    },
    {
      "mpn": "MMBT2222A-13-F",
      "kind": "unknown"
    }
  ]
}