main
Ray Set visibility: public 12bb358 17d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "fmmt591-jsm",
  "title": "FMMT591-JSM",
  "brief": "JSMSEMI Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "package": "SOT-23",
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    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
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      "lcsc": "C28642379"
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
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        "status": "no match"
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      "mouser": {
        "pn": null,
        "status": "no match"
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      },
      {
        "number": "2",
        "name": "E",
        "type": "passive",
        "description": "Emitter terminal of the PNP transistor, with emitter-base breakdown voltage V(BR)EBO of -5 V minimum at IE=-100μA."
      },
      {
        "number": "3",
        "name": "Collector",
        "type": "passive",
        "description": "Collector terminal of the PNP transistor, rated for VCEO of -25 V and continuous collector current of -1.8 A."
      }
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
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        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "at": "2026-10-18T04:18:00"
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        "pages": 1,
        "sha256": "133b038eaaefa7d9",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "origin": "footprint origin = pad-pattern centre",
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        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-18",
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  "metadata": {
    "specs": {
      "Manufacturer": "JSMSEMI",
      "Package": "SOT-23",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "appearance": {
      "housing": {
        "quote": "VEBO Emitter-Base Voltage -5 V PC Collector Power Dissipation 0.3 W",
        "page": 1,
        "doc": "ds.pdf",
        "material": "PC"
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      "version": 1,
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      "rows": [
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          "name": "Collector-base breakdown voltage",
          "symbol": "V(BR)CBO",
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          "typ": null,
          "max": null,
          "conditions": "IC=-100μA, IE=0",
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        },
        {
          "name": "Collector-emitter breakdown voltage",
          "symbol": "V(BR)CEO",
          "kind": "electrical",
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          "min": -25,
          "typ": null,
          "max": null,
          "conditions": "IC B=0",
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        },
        {
          "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": "Collector cut-off current",
          "symbol": "ICBO",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": -0.1,
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        {
          "name": "Emitter cut-off current",
          "symbol": "IEBO",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": -0.1,
          "conditions": "VEB=-5V, IC=0",
          "source_page": 1,
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        },
        {
          "name": "DC current gain",
          "symbol": "hFE(2)",
          "kind": "electrical",
          "unit": "",
          "min": 40,
          "typ": null,
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          "conditions": "VCE=-1V, IC=-800mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-emitter saturation voltage",
          "symbol": "VCE(sat)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
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        {
          "name": "Base-emitter saturation voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -1.2,
          "conditions": "IC=-800mA, IB=-80mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Base-emitter on voltage",
          "symbol": "VBE(on)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -1,
          "conditions": "IC=-1V,VCE=-10mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Base-emitter positive favor voltage",
          "symbol": "VBEF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -1.55,
          "conditions": "IB=-1A",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Transition frequency",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "VCE= -10V, IC= -50mA, f=30MHz",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Output capacitance",
          "symbol": "Cob",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "VCB=-10V, IE=0, f=1MHz",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector-base voltage",
          "symbol": "VCBO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -50,
          "conditions": "",
          "source_page": 1,
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        },
        {
          "name": "Collector-emitter voltage",
          "symbol": "VCEO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": -25,
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        },
        {
          "name": "Emitter-base voltage",
          "symbol": "VEBO",
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          "unit": "V",
          "min": null,
          "typ": null,
          "max": -5,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
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        {
          "name": "Collector current, continuous",
          "symbol": "IC",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": -1.8,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Collector power dissipation",
          "symbol": "PC",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "TA=25℃",
          "source_page": 1,
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          "name": "Junction temperature",
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          "conditions": "",
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        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
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  "discovery_pitch": "FMMT591-JSM (JSMSEMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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