CJ3400

{
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  "type": "component",
  "slug": "cj3400",
  "title": "CJ3400",
  "brief": "Changjing MOSFETs, 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",
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  "component": {
    "mpn": "CJ3400",
    "manufacturer": "Changjing",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "MOSFETs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586171665587429376",
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    "distributor_links": {
      "lcsc": "C19019"
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      "checked_at": "2026-10-09T00:14:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
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      "mouser": {
        "pn": null,
        "status": "no match"
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    "pins": [
      {
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        "name": "GATE",
        "type": "input",
        "description": "Gate of the N-channel MOSFET, rated for a gate-source voltage VGS of ±12 V maximum."
      },
      {
        "number": "2",
        "name": "SOURCE",
        "type": "passive",
        "description": "Source of the N-channel MOSFET; the datasheet gives no separate pin-level limit, and the 30 V drain-source voltage rating (VDS) applies between drain and source."
      },
      {
        "number": "3",
        "name": "DRAIN",
        "type": "passive",
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        "guard_notes": [
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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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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
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        "checked": "2026-10-09",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Changjing",
      "Package": "SOT-23",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "f9216dcf9e46204c",
      "rows": [
        {
          "name": "Drain-Source Voltage",
          "symbol": "VDS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "",
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        },
        {
          "name": "Gate-Source Voltage",
          "symbol": "VGS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -12,
          "typ": null,
          "max": 12,
          "conditions": "",
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        },
        {
          "name": "Continuous Drain Current",
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          "typ": null,
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        {
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          "min": null,
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        },
        {
          "name": "Power Dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 350,
          "conditions": "",
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        },
        {
          "name": "Junction Temperature",
          "symbol": "TJ",
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          "unit": "℃",
          "min": null,
          "typ": null,
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        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
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          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Thermal Resistance from Junction to Ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": null,
          "max": 357,
          "conditions": "Surface mounted on FR4 board, t < 5 sec (note 2)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Drain-source breakdown voltage",
          "symbol": "V(BR)DSS",
          "kind": "electrical",
          "unit": "V",
          "min": 30,
          "typ": null,
          "max": null,
          "conditions": "VGS = 0V, ID =250µA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Zero gate voltage drain current",
          "symbol": "IDSS",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VDS =24V,VGS = 0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Gate-source leakage current",
          "symbol": "IGSS",
          "kind": "electrical",
          "unit": "nA",
          "min": -100,
          "typ": null,
          "max": 100,
          "conditions": "VGS =±12V, VDS = 0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Drain-source on-resistance",
          "symbol": "RDS(on)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "VGS =10V, ID =5.8A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Drain-source on-resistance",
          "symbol": "RDS(on)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "VGS =4.5V, ID =5A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Drain-source on-resistance",
          "symbol": "RDS(on)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 52,
          "conditions": "VGS =2.5V,ID=4A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Forward transconductance",
          "symbol": "gFS",
          "kind": "electrical",
          "unit": "S",
          "min": 8,
          "typ": null,
          "max": null,
          "conditions": "VDS =5V, ID =5A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Gate threshold voltage",
          "symbol": "VGS(th)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": null,
          "max": 1.4,
          "conditions": "VDS =VGS, ID =250µA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Diode forward voltage",
          "symbol": "VSD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "IS=1A,VGS=0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input capacitance",
          "symbol": "Ciss",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 1050,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output capacitance",
          "symbol": "Coss",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 99,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reverse transfer capacitance",
          "symbol": "Crss",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 77,
          "max": null,
          "conditions": "VDS =15V,VGS =0V,f =1MHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Gate resistance",
          "symbol": "Rg",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 3.6,
          "max": null,
          "conditions": "VDS =0V,VGS =0V,f =1MHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Turn-on delay time",
          "symbol": "td(on)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "VGS=10V,VDS=15V, RL=2.7Ω,RGEN=3Ω",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Turn-on rise time",
          "symbol": "tr",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 7,
          "max": null,
          "conditions": "VGS=10V,VDS=15V, RL=2.7Ω,RGEN=3Ω",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Turn-off delay time",
          "symbol": "td(off)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "VGS=10V,VDS=15V, RL=2.7Ω,RGEN=3Ω",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Turn-off fall time",
          "symbol": "tf",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 6,
          "max": null,
          "conditions": "VGS=10V,VDS=15V, RL=2.7Ω,RGEN=3Ω",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_pitch": "CJ3400 (Changjing) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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