MMBTA94

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  "type": "component",
  "slug": "mmbta94",
  "title": "MMBTA94",
  "brief": "hongjiacheng Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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  "component": {
    "mpn": "MMBTA94",
    "manufacturer": "hongjiacheng",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8564879586027724800",
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      "lbr": "mmbta94.lbr"
    },
    "distributor_links": {
      "lcsc": "C41375113",
      "digikey": "5399-MMBTA94TR-ND",
      "mouser": "637-MMBTA94"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T02:07:47Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "5399-MMBTA94TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "637-MMBTA94",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "passive",
        "description": "Base terminal of the PNP transistor; the datasheet rates the emitter-base voltage VEBO at -5.0 V and tests IEBO at VEB = -4.0 V."
      },
      {
        "number": "2",
        "name": "E",
        "type": "passive",
        "description": "Emitter terminal of the PNP transistor; the emitter-base breakdown voltage V(BR)EBO is -5.0 V minimum at IE = -100 μA."
      },
      {
        "number": "3",
        "name": "C",
        "type": "passive",
        "description": "Collector terminal of the PNP transistor; the datasheet limits are a collector-emitter voltage VCEO of -400 V and a collector current IC of -0.2 A."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "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 SOT-23 pin numbers are not printed as a labeled pinout in the extracted text. The mapping 1=B, 2; The datasheet gives only device-level absolute maximum and test limits (VCBO, VCEO, VEBO, IC, PC, Tj; The pin types are set to passive, the KiCad class for transistor terminals. The datasheet does not s"
        ],
        "pages_sent": 3,
        "cost_usd": 0.0289,
        "at": "2026-10-09T02:06:43"
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      "datasheet": {
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        "pages": 3,
        "sha256": "2584791816de307c",
        "source_tier": "lcsc"
      },
      "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": [
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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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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "hongjiacheng",
      "Package": "SOT-23",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "2584791816de307c",
      "rows": [
        {
          "name": "Collector-Emitter Voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -400,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Base Voltage",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -400,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 1,
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        },
        {
          "name": "Emitter-Base Voltage",
          "symbol": "VEBO",
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          "unit": "V",
          "min": -5,
          "typ": null,
          "max": null,
          "conditions": "",
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        },
        {
          "name": "Collector Current",
          "symbol": "IC",
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          "unit": "A",
          "min": -0.2,
          "typ": null,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Collector Power Dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 350,
          "conditions": "",
          "source_page": 1,
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        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
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        },
        {
          "name": "Junction temperature",
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          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Collector-Base Cut-off current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": -100,
          "conditions": "VCB= -400V, IE=0",
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          "source": "datasheet"
        },
        {
          "name": "Emitter-Base Cut-off current",
          "symbol": "IEBO",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": -100,
          "conditions": "VEB= -4.0V, IC=0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Base Breakdown Voltage",
          "symbol": "V(BR)CBO",
          "kind": "electrical",
          "unit": "V",
          "min": -400,
          "typ": null,
          "max": null,
          "conditions": "IC=-100μA, IE=0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Breakdown Voltage",
          "symbol": "V(BR)CEO",
          "kind": "electrical",
          "unit": "V",
          "min": -400,
          "typ": null,
          "max": null,
          "conditions": "IC=-1.0mA, IB=0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Emitter-Base Breakdown Voltage",
          "symbol": "V(BR)EBO",
          "kind": "electrical",
          "unit": "V",
          "min": -5,
          "typ": null,
          "max": null,
          "conditions": "IE=-100μA, IC=0",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain hFE(1)",
          "symbol": "hFE(1)",
          "kind": "electrical",
          "unit": "",
          "min": 80,
          "typ": null,
          "max": 300,
          "conditions": "IC=-10mA VCE= -10V",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "DC Current Gain hFE(2)",
          "symbol": "hFE(2)",
          "kind": "electrical",
          "unit": "",
          "min": 70,
          "typ": null,
          "max": null,
          "conditions": "IC=-1.0mA VCE= -10V",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Saturation Voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -0.2,
          "conditions": "IC= -10mA IB= -1.0mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter Saturation Voltage",
          "symbol": "VBE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -0.75,
          "conditions": "IC= -10mA IB= -1.0mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Transition frequency",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 50,
          "typ": null,
          "max": null,
          "conditions": "IC= 10mA, VCE= 20V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Typical Thermal Resistance Junction-to-Ambient",
          "symbol": "RθJ-A",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_triggers": [
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  "discovery_pitch": "MMBTA94 (hongjiacheng) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}