SI8661BD-B-ISR

{
  "slug": "si8661bd-b-isr",
  "version": "0.1.0",
  "type": "component",
  "description": "SKYWORKS/SILICON LABS Digital Isolators, SOIC-16-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "signal isolation devices",
    "si8661bd-b-isr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "si8661bd-b-isr.kicad_sym",
    "si8661bd-b-isr.kicad_mod",
    "si8661bd-b-isr.glb",
    "si8661bd-b-isr.step",
    "si8661bd-b-isr.lbr",
    "docs/hero.png",
    "docs/si8661bd-b-isr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "si8661bd-b-isr-hero.glb",
    "si8661bd-b-isr-hero.overlay.json",
    "si8661bd-b-isr-etched.glb"
  ],
  "component": {
    "mpn": "SI8661BD-B-ISR",
    "manufacturer": "SKYWORKS/SILICON LABS",
    "package": "SOIC-16-300mil",
    "pin_count": 16,
    "category": "Signal Isolation Devices",
    "subcategory": "Digital Isolators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/44b36ac1b096025b84d3be73a8bf3fed.pdf",
    "parts": {
      "symbol": "si8661bd-b-isr.kicad_sym",
      "footprint": "si8661bd-b-isr.kicad_mod",
      "model_3d": "si8661bd-b-isr-hero.glb",
      "model_3d_plain": "si8661bd-b-isr-etched.glb",
      "model_3d_step": "si8661bd-b-isr-etched.step",
      "model_3d_step_plain": "si8661bd-b-isr.step",
      "lbr": "si8661bd-b-isr.lbr"
    },
    "distributor_links": {
      "lcsc": "C25490831"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:57:06Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 820 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD1",
        "type": "power_in",
        "description": "Side 1 power supply, 2.5-5.5 V operating with a 0.1 µF bypass capacitor to GND1 placed close to the package."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Side 1 digital input."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Side 1 digital input."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "input",
        "description": "Side 1 digital input."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "input",
        "description": "Side 1 digital input (Si8661 has 5 inputs on the VDD1 side)."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "input",
        "description": "Side 1 digital input (Si8661 has 5 inputs on the VDD1 side)."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "output",
        "description": "Side 1 digital output (the single reverse channel of the Si8661, driven from B6)."
      },
      {
        "number": "8",
        "name": "GND1",
        "type": "power_in",
        "description": "Side 1 ground."
      },
      {
        "number": "9",
        "name": "GND2",
        "type": "power_in",
        "description": "Side 2 ground."
      },
      {
        "number": "10",
        "name": "B6",
        "type": "input",
        "description": "Side 2 digital input (the single reverse channel of the Si8661, passed to A6)."
      },
      {
        "number": "11",
        "name": "B5",
        "type": "output",
        "description": "Side 2 digital output."
      },
      {
        "number": "12",
        "name": "B4",
        "type": "output",
        "description": "Side 2 digital output."
      },
      {
        "number": "13",
        "name": "B3",
        "type": "output",
        "description": "Side 2 digital output."
      },
      {
        "number": "14",
        "name": "B2",
        "type": "output",
        "description": "Side 2 digital output."
      },
      {
        "number": "15",
        "name": "B1",
        "type": "output",
        "description": "Side 2 digital output."
      },
      {
        "number": "16",
        "name": "VDD2",
        "type": "power_in",
        "description": "Side 2 power supply, 2.5-5.5 V operating with a 0.1 µF bypass capacitor to GND2 placed close to the package."
      }
    ],
    "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: MPN Si8661BD-B-ISR is the 5.0 kV wide-body SOIC-16 part (Si8661BD-B-IS, 'R' = tape and reel). The pi"
        ],
        "pages_sent": 18,
        "cost_usd": 0.1652,
        "at": "2026-10-22T22:56:52"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/44b36ac1b096025b84d3be73a8bf3fed.pdf",
        "pages": 42,
        "sha256": "268d7e9331d86e3d",
        "source_tier": "mfr"
      },
      "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": "si8661bd-b-isr.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": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "si8661bd-b-isr-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": "b9fa5f5f250f20d473c67a31de232791173e59ef3fc4787791ef670c77667141",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}