FOD2712AR2

{
  "slug": "fod2712ar2",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Transistor, Photovoltaic Output Optoisolators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "optoisolators",
    "fod2712ar2",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "fod2712ar2.kicad_sym",
    "fod2712ar2.kicad_mod",
    "fod2712ar2.glb",
    "fod2712ar2.step",
    "fod2712ar2.lbr",
    "docs/hero.png",
    "docs/fod2712ar2-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "fod2712ar2-hero.glb",
    "fod2712ar2-hero.overlay.json",
    "fod2712ar2-etched.glb"
  ],
  "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": {
        "factory": "2.0.0",
        "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": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588929983447748608",
        "pages": 17,
        "sha256": "50ad1bdf611ee132",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "fod2712ar2.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "fod2712ar2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "93caa07b6028e0b5e37fa10a7ee783867c3c0dbe947a46f8ba7d6d3eca7a9385",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}