FMMT458TA

{
  "schema_version": 1,
  "type": "component",
  "slug": "fmmt458ta",
  "title": "FMMT458TA",
  "brief": "Diodes Incorporated Bipolar (BJT), 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": "FMMT458TA",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
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      "lcsc": "C116737"
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    "pins": [
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        "number": "1",
        "name": "B",
        "type": "input",
        "description": "NPN base terminal; continuous base current IB up to 200mA; base-emitter turn-on voltage VBE(on) max 0.9V at IC=50mA, VCE=10V."
      },
      {
        "number": "2",
        "name": "E",
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      },
      {
        "number": "3",
        "name": "C",
        "type": "passive",
        "description": "NPN collector terminal; VCEO 400V, continuous collector current IC max 225mA, peak pulse current ICM 1A; VCE(sat) max 200mV at IC=20mA, IB=2mA."
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        "guards": "pin_guards 0.1: passed",
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        "cost_usd": 0.1273,
        "at": "2026-09-23T16:29:29"
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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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    "models_3d": [
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        "file": "fmmt458ta.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3.0,
          1.2
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        "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)"
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      {
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "SOT-23",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
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          "name": "Collector-Base Voltage",
          "symbol": "VCBO",
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          "unit": "V",
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          "typ": null,
          "max": 400,
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        {
          "name": "Collector-Emitter Voltage",
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        {
          "name": "Peak Pulse Current",
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          "max": 1,
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        },
        {
          "name": "Base Current",
          "symbol": "IB",
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        },
        {
          "name": "Power Dissipation",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
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        },
        {
          "name": "Thermal Resistance, Junction to Ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
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          "typ": null,
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        {
          "name": "Thermal Resistance, Junction to Lead",
          "symbol": "RθJL",
          "kind": "thermal",
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          "min": null,
          "typ": null,
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          "conditions": "Note 6: junction to solder-point at end of collector lead",
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        },
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          "name": "Electrostatic Discharge - Machine Model",
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          "conditions": "JEDEC Class C",
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          "name": "Collector-Base Breakdown Voltage",
          "symbol": "BVCBO",
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        {
          "name": "Collector Cutoff Current",
          "symbol": "ICBO",
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          "conditions": "VCB = 320V",
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        {
          "name": "Emitter Cutoff Current",
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          "kind": "electrical",
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        {
          "name": "Collector Emitter Cutoff Current",
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          "min": null,
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          "conditions": "VCE = 320V",
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        },
        {
          "name": "Static Forward Current Transfer Ratio",
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          "kind": "electrical",
          "unit": "",
          "min": 100,
          "typ": null,
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          "name": "Collector-Emitter Saturation Voltage",
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          "unit": "mV",
          "min": null,
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          "max": 200,
          "conditions": "IC = 20mA, IB = 2mA",
          "source_page": 4,
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        {
          "name": "Collector-Emitter Saturation Voltage",
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          "unit": "mV",
          "min": null,
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          "max": 500,
          "conditions": "IC = 50mA, IB = 6mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Base-Emitter Turn-On Voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": null,
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          "max": 0.9,
          "conditions": "IC = 50mA, VCE = 10V",
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        {
          "name": "Base-Emitter Saturation Voltage",
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          "min": null,
          "typ": null,
          "max": 0.9,
          "conditions": "IC = 50mA, IB = 5mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Capacitance",
          "symbol": "Cobo",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "VCB = 20V, f = 1MHz",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Transition Frequency",
          "symbol": "fT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 50,
          "typ": null,
          "max": null,
          "conditions": "VCE = 20V, IC = 10mA, f = 20MHz",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
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  "updated_at": "2026-09-24T20:43:37.493Z"
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