main
Ray Set visibility: public b4b630f 7h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "mmbt4140",
  "title": "MMBT4140",
  "brief": "EIC Semicon Bipolar Transistors - BJT, SOT-23. 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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    "extractor-text"
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    "manufacturer": "EIC Semicon",
    "package": "SOT-23",
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    "category": "Triode/MOS Tube/Transistor",
    "subcategory": "Bipolar Transistors - BJT",
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      "lbr": "mmbt4140.lbr"
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      "source": "Component Ocean /api/assign-pns",
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        "status": "quota"
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      "mouser": {
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      },
      {
        "number": "2",
        "name": "E",
        "type": "passive",
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      },
      {
        "number": "3",
        "name": "C",
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        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin assignment (1.BASE 2.EMITTER 3.COLLECTOR) is read from the package drawing caption on page 1. Pi",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 2,
        "cost_usd": 0.1367,
        "at": "2026-10-22T21:53:33"
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        "sha256": "72c769bcd97bd846",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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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": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mmbt4140-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "EIC Semicon",
      "Package": "SOT-23",
      "Category": "Triode/MOS Tube/Transistor",
      "Pins": "3"
    },
    "characteristics": {
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      "source": "datasheet",
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          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "Ta = 25 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector Emitter Voltage",
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          "kind": "absolute_maximum",
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          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "Ta = 25 °C",
          "source_page": 1,
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        {
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          "max": 5,
          "conditions": "Ta = 25 °C",
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          "min": null,
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          "conditions": "Ta = 25 °C",
          "source_page": 1,
          "source": "datasheet"
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        {
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          "min": null,
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          "conditions": "Ta = 25 °C",
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        },
        {
          "name": "Total Power Dissipation (standard footprint)",
          "symbol": "Ptot",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "Device mounted on PCB; single sided copper; tinplated; standard footprint",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Total Power Dissipation (1 cm2 collector pad)",
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          "unit": "mW",
          "min": null,
          "typ": null,
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          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
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          "unit": "°C",
          "min": null,
          "typ": null,
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          "conditions": "",
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        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
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          "unit": "°C",
          "min": -65,
          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "DC Current Gain",
          "symbol": "hFE",
          "kind": "electrical",
          "unit": "",
          "min": 300,
          "typ": null,
          "max": null,
          "conditions": "VCE = 5 V, IC = 1 mA",
          "source_page": 2,
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        {
          "name": "DC Current Gain",
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          "kind": "electrical",
          "unit": "",
          "min": 300,
          "typ": null,
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        {
          "name": "DC Current Gain",
          "symbol": "hFE",
          "kind": "electrical",
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          "min": 200,
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          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Base Cutoff Current",
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          "kind": "electrical",
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          "min": null,
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        },
        {
          "name": "Collector Emitter Cutoff Current",
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          "conditions": "VCE = 30 V",
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          "source": "datasheet"
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        {
          "name": "Emitter Base Cutoff Current",
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          "max": 100,
          "conditions": "VEB = 5 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Emitter Saturation Voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "IC = 100 mA, IB = 1 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Emitter Saturation Voltage",
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          "max": 250,
          "conditions": "IC = 500 mA, IB = 50 mA",
          "source_page": 2,
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        {
          "name": "Collector Emitter Saturation Voltage",
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          "min": null,
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          "conditions": "IC = 1 A, IB = 100 mA",
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        {
          "name": "Base Emitter Saturation Voltage",
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          "min": null,
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          "max": 1.2,
          "conditions": "IC = 1 A, IB = 100 mA",
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          "source": "datasheet"
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        {
          "name": "Base Emitter Turn-on Voltage",
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          "typ": null,
          "max": 1.1,
          "conditions": "VCE = 5 V, IC = 1 A",
          "source_page": 2,
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        },
        {
          "name": "Transition Frequency",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
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          "typ": null,
          "max": null,
          "conditions": "VCE = 10 V, IC = 50 mA, f = 100 MHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Collector Capacitance",
          "symbol": "Cob",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VCB = 10 V, f = 1 MHz",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
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    "readme",
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  "discovery_triggers": [
    "mmbt4140"
  ],
  "discovery_pitch": "MMBT4140 (EIC Semicon) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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  "visibility": {
    "public": true
  }
}