π161U31

{
  "slug": "161u31",
  "version": "0.1.0",
  "type": "component",
  "description": "2Pai Semi Digital Isolators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface ics",
    "π161u31",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "161u31.kicad_sym",
    "161u31.kicad_mod",
    "161u31.glb",
    "161u31.step",
    "161u31.lbr",
    "docs/hero.png",
    "docs/161u31-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "161u31-hero.glb",
    "161u31-hero.overlay.json",
    "161u31-etched.glb"
  ],
  "component": {
    "mpn": "π161U31",
    "manufacturer": "2Pai Semi",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Interface ICs",
    "subcategory": "Digital Isolators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5cb4aff9a542ee02bb712f8324a18f54.pdf",
    "parts": {
      "symbol": "161u31.kicad_sym",
      "footprint": "161u31.kicad_mod",
      "model_3d": "161u31-hero.glb",
      "model_3d_plain": "161u31-etched.glb",
      "model_3d_step": "161u31-etched.step",
      "model_3d_step_plain": "161u31.step",
      "lbr": "161u31.lbr"
    },
    "distributor_links": {
      "lcsc": "C471607"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T14:36:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD1",
        "type": "power_in",
        "description": "Supply voltage for isolator side 1, which operates from 3.0 V to 5.5 V."
      },
      {
        "number": "2",
        "name": "VIA",
        "type": "input",
        "description": "Logic input A on side 1; the high-level input must be at least 0.7×VDD1 and the low-level input at most 0.3×VDD1."
      },
      {
        "number": "3",
        "name": "VIB",
        "type": "input",
        "description": "Logic input B on side 1; the high-level input must be at least 0.7×VDD1 and the low-level input at most 0.3×VDD1."
      },
      {
        "number": "4",
        "name": "VIC",
        "type": "input",
        "description": "Logic input C on side 1; the high-level input must be at least 0.7×VDD1 and the low-level input at most 0.3×VDD1."
      },
      {
        "number": "5",
        "name": "VID",
        "type": "input",
        "description": "Logic input D on side 1; the high-level input must be at least 0.7×VDD1 and the low-level input at most 0.3×VDD1."
      },
      {
        "number": "6",
        "name": "VIE",
        "type": "input",
        "description": "Logic input E on side 1; the high-level input must be at least 0.7×VDD1 and the low-level input at most 0.3×VDD1."
      },
      {
        "number": "7",
        "name": "VOF",
        "type": "output",
        "description": "Logic output F on side 1, with a maximum average output current of ±6 mA (IOH −6 mA, IOL 6 mA)."
      },
      {
        "number": "8",
        "name": "GND1",
        "type": "power_in",
        "description": "Ground reference for isolator side 1."
      },
      {
        "number": "9",
        "name": "GND2",
        "type": "power_in",
        "description": "Ground reference for isolator side 2."
      },
      {
        "number": "10",
        "name": "VIF",
        "type": "input",
        "description": "Logic input F on side 2; the high-level input must be at least 0.7×VDD2 and the low-level input at most 0.3×VDD2."
      },
      {
        "number": "11",
        "name": "VOE",
        "type": "output",
        "description": "Logic output E on side 2, with a maximum average output current of ±6 mA (IOH −6 mA, IOL 6 mA)."
      },
      {
        "number": "12",
        "name": "VOD",
        "type": "output",
        "description": "Logic output D on side 2, with a maximum average output current of ±6 mA (IOH −6 mA, IOL 6 mA)."
      },
      {
        "number": "13",
        "name": "VOC",
        "type": "output",
        "description": "Logic output C on side 2, with a maximum average output current of ±6 mA (IOH −6 mA, IOL 6 mA)."
      },
      {
        "number": "14",
        "name": "VOB",
        "type": "output",
        "description": "Logic output B on side 2, with a maximum average output current of ±6 mA (IOH −6 mA, IOL 6 mA)."
      },
      {
        "number": "15",
        "name": "VOA",
        "type": "output",
        "description": "Logic output A on side 2, with a maximum average output current of ±6 mA (IOH −6 mA, IOL 6 mA)."
      },
      {
        "number": "16",
        "name": "VDD2",
        "type": "power_in",
        "description": "Supply voltage for isolator side 2, which operates from 3.0 V to 5.5 V."
      }
    ],
    "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 pin assignments were taken from the π161Uxx Pin Function Descriptions table on page 2. The pin-c; The datasheet gives the 3.0 V to 5.5 V supply range and the ±6 mA output current limits in the recom"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0858,
        "at": "2026-10-21T14:31:49"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/5cb4aff9a542ee02bb712f8324a18f54.pdf",
        "pages": 16,
        "sha256": "d12e9cd6aa221f61",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "161u31.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "161u31-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d76767698add624a8b5ed22dffd1424fe9ca6b644d42c3c46913bad87bec5eb9",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}