main
Ray Set visibility: public 0ea4551 11d ago
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{
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  "type": "component",
  "slug": "fod2712ar2",
  "title": "FOD2712AR2",
  "brief": "onsemi Transistor, Photovoltaic Output Optoisolators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "optoisolators",
    "fod2712ar2",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "FOD2712AR2",
    "manufacturer": "onsemi",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Optoisolators",
    "subcategory": "Transistor, Photovoltaic Output Optoisolators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588929983447748608",
    "parts": {
      "symbol": "fod2712ar2.kicad_sym",
      "footprint": "fod2712ar2.kicad_mod",
      "model_3d": "fod2712ar2-hero.glb",
      "model_3d_plain": "fod2712ar2-etched.glb",
      "model_3d_step": "fod2712ar2-etched.step",
      "model_3d_step_plain": "fod2712ar2.step",
      "lbr": "fod2712ar2.lbr"
    },
    "distributor_links": {
      "lcsc": "C903690",
      "digikey": "FOD2712AR2TR-ND",
      "mouser": "512-FOD2712AR2"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T04:31:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "FOD2712AR2TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "512-FOD2712AR2",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected internally; the datasheet states it should not be connected to the secondary side, as this may compromise the isolation structure."
      },
      {
        "number": "2",
        "name": "C",
        "type": "output",
        "description": "Phototransistor collector, normally tied to a pull-up resistor whose value must account for the PWM IC voltage range and the CTR variation (minimum 100%)."
      },
      {
        "number": "3",
        "name": "E",
        "type": "passive",
        "description": "Phototransistor emitter, normally grounded; the phototransistor has no base connection."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected internally; the datasheet states it should not be connected to the secondary side, as this may compromise the isolation structure."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Secondary ground, to be connected to the secondary ground of the converter."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output and compensation pin; the compensation network must be attached between pins 6 and 7, and the error amplifier output has a minimum of the 1.24V reference voltage."
      },
      {
        "number": "7",
        "name": "FB",
        "type": "input",
        "description": "Voltage feedback input, the inverting input of the error amplifier, which regulates this pin to the 1.24V reference (1% tolerance)."
      },
      {
        "number": "8",
        "name": "LED",
        "type": "input",
        "description": "LED anode, the input to the light emitting diode, which must be fed through a current limiting resistor; the minimum voltage applied to this pin is 2.74V (1.24V + 1.5V)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet calls the package an 8-pin small outline package and never prints the name 'SOIC-8'; t; Pin types are inferred for KiCad ERC from the functional descriptions: the phototransistor collector; The datasheet gives no package drawing with pad or ball coordinates for this part, so only the pin n"
        ],
        "pages_sent": 17,
        "cost_usd": 0.0653,
        "at": "2026-10-18T04:29:50"
      },
      "datasheet": {
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        "pages": 17,
        "sha256": "50ad1bdf611ee132",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOIC-8",
      "Category": "Optoisolators",
      "Pins": "8"
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      "source": "datasheet",
      "datasheet_sha256": "50ad1bdf611ee132a00f1eef938bb79830402d1bc1343f38b6527ad23f5086b7",
      "rows": [
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          "name": "Reference Voltage (TA = -40°C to +85°C)",
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          "typ": null,
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          "conditions": "TA = -40°C to +85°C; VCOMP = VFB, ILED = 10mA (Fig.1)",
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        {
          "name": "Reference Voltage (TA = 25°C)",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "V",
          "min": 1.228,
          "typ": 1.24,
          "max": 1.252,
          "conditions": "TA = 25°C; VCOMP = VFB, ILED = 10mA (Fig.1)",
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          "name": "Deviation of VREF over temperature",
          "symbol": "VREF(DEV)",
          "kind": "electrical",
          "unit": "mV",
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          "typ": 4,
          "max": 12,
          "conditions": "TA = -40 to +85°C (Note 1)",
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        {
          "name": "Ratio of Vref variation to error amplifier output",
          "symbol": "∆VREF/∆VCOMP",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": -1.5,
          "max": -2.7,
          "conditions": "ILED = 10 mA, VCOMP = VREF to 12V (Fig. 2)",
          "source_page": 5,
          "source": "datasheet"
        },
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          "name": "Feedback Input Current",
          "symbol": "IREF",
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        {
          "name": "Deviation of IREF over temperature",
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        },
        {
          "name": "Minimum Drive Current",
          "symbol": "ILED(MIN)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 55,
          "max": 80,
          "conditions": "VCOMP = VFB (Fig.1)",
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          "source": "datasheet"
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          "name": "Off-state Error Amplifier Current",
          "symbol": "I(OFF)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.001,
          "max": 0.1,
          "conditions": "VLED = 6V, VFB = 0 (Fig.4)",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "LED Forward Voltage",
          "symbol": "VF",
          "kind": "electrical",
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          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "ILED = 10mA, VCOMP = VFB (Fig.1)",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Collector Dark Current",
          "symbol": "ICEO",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "VCE = 10V (Fig. 5)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Voltage Breakdown",
          "symbol": "BVCEO",
          "kind": "electrical",
          "unit": "V",
          "min": 70,
          "typ": null,
          "max": null,
          "conditions": "IC = 1.0mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Emitter-Collector Voltage Breakdown",
          "symbol": "BVECO",
          "kind": "electrical",
          "unit": "V",
          "min": 7,
          "typ": null,
          "max": null,
          "conditions": "IE = 100µA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Current Transfer Ratio",
          "symbol": "CTR",
          "kind": "electrical",
          "unit": "%",
          "min": 100,
          "typ": null,
          "max": 200,
          "conditions": "ILED = 10mA, VCOMP = VFB, VCE = 5V (Fig. 6)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Collector-Emitter Saturation Voltage",
          "symbol": "VCE(SAT)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
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          "max": 0.4,
          "conditions": "ILED = 10mA, VCOMP = VFB, IC = 2.5mA (Fig. 6)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input-Output Insulation Leakage Current",
          "symbol": "II-O",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
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          "max": 1,
          "conditions": "RH = 45%, TA = 25°C, t = 5s, VI-O = 3000 VDC (Note 1)",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Withstand Insulation Voltage",
          "symbol": "VISO",
          "kind": "electrical",
          "unit": "Vrms",
          "min": 2500,
          "typ": null,
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          "conditions": "RH ≤ 50%, TA = 25°C, t = 1 min. (Note 1)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Common Mode Transient Immunity at Output HIGH",
          "symbol": "CMH",
          "kind": "electrical",
          "unit": "kV/µs",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "ILED = 0mA, Vcm = 10 VPP, RL = 2.2kΩ (Fig. 8) (Note 2)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Common Mode Transient Immunity at Output LOW",
          "symbol": "CML",
          "kind": "electrical",
          "unit": "kV/µs",
          "min": 1,
          "typ": null,
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          "conditions": "ILED = 10mA, Vcm = 10 VPP, RL = 2.2kΩ (Fig. 8) (Note 2)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Error Amplifier Output Impedance",
          "symbol": "|ZOUT|",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.25,
          "max": null,
          "conditions": "VCOMP = VFB, ILED = 0.1mA to 15mA, f < 1kHz (Note 2)",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
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        {
          "name": "Operating Temperature",
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          "unit": "°C",
          "min": -40,
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          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Input Voltage (LED pin)",
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          "unit": "V",
          "min": null,
          "typ": null,
          "max": 13.2,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input DC Current",
          "symbol": "ILED",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 4,
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          "name": "Collector-Emitter Voltage",
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          "max": 30,
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          "source_page": 4,
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          "name": "Emitter-Collector Voltage",
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          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Collector Current",
          "symbol": "IC",
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          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Input Power Dissipation",
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          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 145,
          "conditions": "",
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        {
          "name": "Transistor Power Dissipation",
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          "unit": "mW",
          "min": null,
          "typ": null,
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          "name": "Total Power Dissipation",
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          "conditions": "",
          "source_page": 4,
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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