QCFJ-3439T-500UE

{
  "schema_version": 1,
  "type": "component",
  "slug": "qcfj-3439t-500ue",
  "title": "QCFJ-3439T-500UE",
  "brief": "Broadcom/AVAGO Transistor Output Optocoupler, SO-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "optocoupler",
    "qcfj-3439t-500ue",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "QCFJ-3439T-500UE",
    "manufacturer": "Broadcom/AVAGO",
    "package": "SO-24",
    "pin_count": 24,
    "category": "Optocoupler",
    "subcategory": "Transistor Output Optocoupler",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/24af23be2e3a04683701bc16f29c77a2.pdf",
    "parts": {
      "symbol": "qcfj-3439t-500ue.kicad_sym",
      "footprint": "qcfj-3439t-500ue.kicad_mod",
      "model_3d": "qcfj-3439t-500ue-hero.glb",
      "model_3d_plain": "qcfj-3439t-500ue-etched.glb",
      "model_3d_step": "qcfj-3439t-500ue-etched.step",
      "model_3d_step_plain": "qcfj-3439t-500ue.step",
      "lbr": "qcfj-3439t-500ue.lbr"
    },
    "distributor_links": {
      "lcsc": "C6800671"
    },
    "distributor_check": {
      "checked_at": "2026-10-24T00:22:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VEE1",
        "type": "power_in",
        "description": "Input ground."
      },
      {
        "number": "2",
        "name": "/UVLO",
        "type": "output",
        "description": "VCC1 under voltage feedback and VCC2 under voltage lock-out feedback."
      },
      {
        "number": "3",
        "name": "/FAULT",
        "type": "output",
        "description": "Desaturation fault feedback."
      },
      {
        "number": "4",
        "name": "/GFAULT",
        "type": "output",
        "description": "IGBT/MOSFET gate status feedback."
      },
      {
        "number": "5",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; internally this pin is connected to the VEE1 lead frame."
      },
      {
        "number": "6",
        "name": "VCC1",
        "type": "power_in",
        "description": "Input positive power supply."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "8",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; internally connected to the input LED cathode lead frame."
      },
      {
        "number": "9",
        "name": "AN",
        "type": "input",
        "description": "Input LED anode."
      },
      {
        "number": "10",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; internally connected to the input LED anode lead frame."
      },
      {
        "number": "11",
        "name": "CA",
        "type": "input",
        "description": "Input LED cathode."
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "13",
        "name": "VE",
        "type": "power_in",
        "description": "IGBT emitter/MOSFET source reference."
      },
      {
        "number": "14",
        "name": "VEE2",
        "type": "power_in",
        "description": "Output negative power supply."
      },
      {
        "number": "15",
        "name": "VEE2",
        "type": "power_in",
        "description": "Output negative power supply."
      },
      {
        "number": "16",
        "name": "VOUTN",
        "type": "output",
        "description": "Output driver to turn off the IGBT/MOSFET gate."
      },
      {
        "number": "17",
        "name": "VOUTP/CLAMP",
        "type": "output",
        "description": "Output driver to turn on the IGBT/MOSFET gate and Miller current clamping output."
      },
      {
        "number": "18",
        "name": "VCC2",
        "type": "power_in",
        "description": "Output positive power supply."
      },
      {
        "number": "19",
        "name": "SSD",
        "type": "output",
        "description": "Soft shutdown output driver."
      },
      {
        "number": "20",
        "name": "DESAT",
        "type": "input",
        "description": "Desaturation protection sensing input."
      },
      {
        "number": "21",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; internally connected to the LED2+ lead frame."
      },
      {
        "number": "22",
        "name": "LED2+(DNC)",
        "type": "unconnected",
        "description": "Do not connect, for testing only."
      },
      {
        "number": "23",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; internally connected to the VEE2 lead frame."
      },
      {
        "number": "24",
        "name": "DNC",
        "type": "unconnected",
        "description": "Do not connect; internally connected to the VEE2 lead frame."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin types are inferred from function descriptions; the datasheet does not state electrical direction; Pin 22 LED2+(DNC) is for testing only; typed unconnected. DNC pins 5, 23 and 24 are tied internally "
        ],
        "pages_sent": 6,
        "cost_usd": 0.0743,
        "at": "2026-10-24T00:21:52"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/24af23be2e3a04683701bc16f29c77a2.pdf",
        "pages": 27,
        "sha256": "cdb732fece3f4a6b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b3c4c8baeedd5627b9927e4b5f3e924d518ae9eb337f1cf7f6809385c9fc2e85",
        "checked": "2026-10-24",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "qcfj-3439t-500ue-etched.step",
        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "sha256": "1084b1de9c820e3663119cf81214811017fed830c184bbd5176cc8d7d94b72d3",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Broadcom/AVAGO",
      "Package": "SO-24",
      "Category": "Optocoupler",
      "Pins": "24"
    },
    "appearance": {
      "contacts": {
        "quote": "(pin 1) and the bypass capacitor locally to these planes through multiple via holes. For thermal dissipation purposes, it is recommended to place large copper area for top layer VEE2 (pins 14 and 15) ",
        "page": 26,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "cdb732fece3f4a6bfa2a912f60a5ad46d910834c5ab0f5682d633012453ba8c4"
    },
    "characteristics": {
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      "source": "datasheet",
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      "rows": [
        {
          "name": "Storage Temperature",
          "symbol": "TS",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "Operating Temperature",
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          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "IC Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
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          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Average LED Input Current",
          "symbol": "IF(AVG)",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Peak Transient LED Input Current",
          "symbol": "IF(TRAN)",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "<1-µs pulse width, 300 pps",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "LED Reverse Input Voltage",
          "symbol": "VCA – VAN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input Supply Voltage",
          "symbol": "VCC1",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 6,
          "conditions": "Reference to VEE1",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Total Output Supply Voltage",
          "symbol": "VCC2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 30,
          "conditions": "Reference to VEE2",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Negative Output Supply Voltage",
          "symbol": "VEE2 – VE",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -15,
          "typ": null,
          "max": 0.5,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Peak Output Current for VOUTP and VOUTN",
          "symbol": "|IOUT(PEAK)|",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Maximum pulse width=5 µs, maximum duty cycle=1%",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Peak Miller Clamp Sinking Current",
          "symbol": "ICLAMP(PEAK)",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Maximum pulse width=5 µs, maximum duty cycle=1%",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Desat Discharge Current (Continuous)",
          "symbol": "IDSCHG",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 12,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output IC Power Dissipation",
          "symbol": "PO",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 800,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input IC Power Dissipation",
          "symbol": "PI",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input IC Supply Voltage",
          "symbol": "VCC1",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Total Output IC Supply Voltage",
          "symbol": "VCC2 – VEE2",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 15,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Positive Output IC Supply Voltage",
          "symbol": "VCC2 – VE",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 15,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Negative Output IC Supply Voltage",
          "symbol": "VEE2 – VE",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -10,
          "typ": null,
          "max": 0,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input LED Turn-on Current",
          "symbol": "IF(ON)",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 11,
          "typ": null,
          "max": 16,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input LED Turn-off Voltage (VAN – VCA)",
          "symbol": "VF(OFF)",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -5.5,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input LED Turn On Pulse Width",
          "symbol": "Ton(LED)",
          "kind": "recommended_operating",
          "unit": "ns",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input Supply Current",
          "symbol": "ICC1",
          "kind": "electrical",
          "unit": "mA",
          "min": 1,
          "typ": 1.6,
          "max": 2.5,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output High Supply Current",
          "symbol": "ICC2H",
          "kind": "electrical",
          "unit": "mA",
          "min": 4.5,
          "typ": 6.6,
          "max": 8.6,
          "conditions": "IF = 11 mA, No load",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output Low Supply Current",
          "symbol": "ICC2L",
          "kind": "electrical",
          "unit": "mA",
          "min": 3.5,
          "typ": 5.6,
          "max": 7.5,
          "conditions": "IF = 0 mA, No load",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output High VE Supply Current",
          "symbol": "IEH",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.4,
          "typ": -0.7,
          "max": -1.2,
          "conditions": "IF = 11 mA, No load",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output Low VE Supply Current",
          "symbol": "IEL",
          "kind": "electrical",
          "unit": "mA",
          "min": -0.4,
          "typ": -0.7,
          "max": -1.2,
          "conditions": "IF = 0 mA, No load",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "VCC1 Under Voltage Turn On Threshold",
          "symbol": "VUV1_TH+",
          "kind": "electrical",
          "unit": "V",
          "min": 3.9,
          "typ": 4.2,
          "max": 4.4,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "VCC1 Under Voltage Turn Off Threshold",
          "symbol": "VUV1_TH–",
          "kind": "electrical",
          "unit": "V",
          "min": 3.6,
          "typ": 3.9,
          "max": 4.1,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "VCC1 MOS Threshold",
          "symbol": "VCC1_MOS_TH",
          "kind": "electrical",
          "unit": "V",
          "min": 0.5,
          "typ": 1.4,
          "max": 1.7,
          "conditions": "I/UVLO = 0.5 mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "LED Forward Voltage (VAN – VCA)",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.25,
          "typ": 1.55,
          "max": 1.85,
          "conditions": "IF = 11 mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "LED Reverse Breakdown Voltage (VCA – VAN)",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": 6,
          "typ": null,
          "max": null,
          "conditions": "IF = –10 µA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "LED Turn On Current Threshold, Low to High",
          "symbol": "ITH+",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.4,
          "max": 7.5,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "LED Turn On Current Threshold, High to Low",
          "symbol": "ITH–",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.3,
          "typ": 2.1,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "/UVLO Logic Low Output Voltage",
          "symbol": "V/UVLO_L",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "I/UVLO = 4 mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "/UVLO Logic High Output Current",
          "symbol": "I/UVLO_H",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.02,
          "max": 2,
          "conditions": "V/UVLO = 5V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "/FAULT Logic Low Output Voltage",
          "symbol": "V/FAULT_L",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "I/FAULT = 4 mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "/FAULT Logic High Output Current",
          "symbol": "I/FAULT_H",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.02,
          "max": 2,
          "conditions": "V/FAULT = 5V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "/GFAULT Logic Low Output Voltage",
          "symbol": "V/GFAULT_L",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "I/GFAULT = 4 mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "/GFAULT Logic High Output Current",
          "symbol": "I/GFAULT_H",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.02,
          "max": 2,
          "conditions": "V/GFAULT = 5V",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "VOUTN Low Level Voltage",
          "symbol": "VOUTN_L",
          "kind": "electrical",
          "unit": "V",
          "min": 0.01,
          "typ": 0.03,
          "max": 0.1,
          "conditions": "IO = 100 mA",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "VOUTP High Level Peak Sourcing Current",
          "symbol": "IOUTP(PEAK)",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": -16,
          "max": -10,
          "conditions": "VOUTP = VCC2 – 15V",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "VOUTN Low Level Peak Sinking Current",
          "symbol": "IOUTN(PEAK)",
          "kind": "electrical",
          "unit": "A",
          "min": 10,
          "typ": 17,
          "max": null,
          "conditions": "VOUTN = VEE2 + 15V",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "VOUTP Output PMOS RDS(ON)",
          "symbol": "ROUTP",
          "kind": "electrical",
          "unit": "Ω",
          "min": 0.1,
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