MMUN2114LT1G

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  "slug": "mmun2114lt1g",
  "title": "MMUN2114LT1G",
  "brief": "onsemi Digital Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "MMUN2114LT1G",
    "manufacturer": "onsemi",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Digital Transistors",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586187795920117760",
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      "lbr": "mmun2114lt1g.lbr"
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    "distributor_links": {
      "lcsc": "C176660"
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      "checked_at": "2026-10-19T10:54:16Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
        "pn": null,
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    },
    "pins": [
      {
        "number": "1",
        "name": "BASE",
        "type": "input",
        "description": "Base is the BRT input, with the internal series base resistor R1 (10 k typ) connected here; the device input forward voltage VIN(fwd) is 40 Vdc max and input reverse voltage VIN(rev) is 6 Vdc max."
      },
      {
        "number": "2",
        "name": "EMITTER",
        "type": "power_in",
        "description": "Emitter is labeled GROUND on the datasheet and connects to the internal base-emitter resistor R2 (47 k); the datasheet gives no separate electrical limit for this pin."
      },
      {
        "number": "3",
        "name": "COLLECTOR",
        "type": "output",
        "description": "Collector is the BRT output, rated for a maximum continuous collector current IC of 100 mAdc and a collector-emitter voltage VCEO of 50 Vdc."
      }
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  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOT-23",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
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    "characteristics": {
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          "max": 50,
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        {
          "name": "Collector−Emitter Voltage",
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        {
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        {
          "name": "Input Forward Voltage",
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          "kind": "absolute_maximum",
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          "max": 40,
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        {
          "name": "Input Reverse Voltage",
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          "max": 6,
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        {
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          "name": "Thermal Resistance, Junction to Ambient (SOT-23)",
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          "name": "Thermal Resistance, Junction to Lead (SOT-23)",
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          "kind": "electrical",
          "unit": "nAdc",
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          "name": "Collector−Base Breakdown Voltage",
          "symbol": "V(BR)CBO",
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          "conditions": "IC = 10 A, IE = 0",
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        {
          "name": "DC Current Gain",
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          "conditions": "IC = 5.0 mA, VCE = 10 V",
          "source_page": 4,
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        {
          "name": "Collector Emitter Saturation Voltage",
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          "kind": "electrical",
          "unit": "Vdc",
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          "max": 0.25,
          "conditions": "IC = 10 mA, IB = 0.3 mA",
          "source_page": 4,
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        },
        {
          "name": "Input Voltage (off)",
          "symbol": "Vi(off)",
          "kind": "electrical",
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          "min": null,
          "typ": 0.7,
          "max": 0.5,
          "conditions": "VCE = 5.0 V, IC = 100 A",
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          "typ": 0.9,
          "max": null,
          "conditions": "VCE = 0.2 V, IC = 1.0 mA",
          "source_page": 4,
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        {
          "name": "Output Voltage (on)",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "Vdc",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "VCC = 5.0 V, VB = 2.5 V, RL = 1.0 k",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Output Voltage (off)",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "Vdc",
          "min": 4.9,
          "typ": null,
          "max": null,
          "conditions": "VCC = 5.0 V, VB = 0.5 V, RL = 1.0 k",
          "source_page": 4,
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        },
        {
          "name": "Input Resistor R1",
          "symbol": "R1",
          "kind": "electrical",
          "unit": "k",
          "min": 7,
          "typ": 10,
          "max": 13,
          "conditions": "",
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        },
        {
          "name": "Resistor Ratio",
          "symbol": "R1/R2",
          "kind": "electrical",
          "unit": "",
          "min": 0.17,
          "typ": 0.21,
          "max": 0.25,
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    "name": "Ray",
    "email": "[email protected]"
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