SI8661BC-B-IS1

{
  "slug": "si8661bc-b-is1",
  "version": "0.1.0",
  "type": "component",
  "description": "Skyworks Solutions Digital Isolators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "communication interface chip-uart-485-232",
    "si8661bc-b-is1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "si8661bc-b-is1.kicad_sym",
    "si8661bc-b-is1.kicad_mod",
    "si8661bc-b-is1.glb",
    "si8661bc-b-is1.step",
    "si8661bc-b-is1.lbr",
    "docs/hero.png",
    "docs/si8661bc-b-is1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "si8661bc-b-is1-hero.glb",
    "si8661bc-b-is1-hero.overlay.json",
    "si8661bc-b-is1-etched.glb"
  ],
  "component": {
    "mpn": "SI8661BC-B-IS1",
    "manufacturer": "Skyworks Solutions",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Digital Isolators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9db2ac442f3a4d17e06cd38bc4cfe149.pdf",
    "parts": {
      "symbol": "si8661bc-b-is1.kicad_sym",
      "footprint": "si8661bc-b-is1.kicad_mod",
      "model_3d": "si8661bc-b-is1-hero.glb",
      "model_3d_plain": "si8661bc-b-is1-etched.glb",
      "model_3d_step": "si8661bc-b-is1-etched.step",
      "model_3d_step_plain": "si8661bc-b-is1.step",
      "lbr": "si8661bc-b-is1.lbr"
    },
    "distributor_links": {
      "lcsc": "C7081296"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T09:33:57Z",
      "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": "Side 1 power supply, operating 2.5 V to 5.5 V and requiring 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": "bidirectional",
        "description": "Side 1 digital input or output, with direction set by the device channel configuration."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "bidirectional",
        "description": "Side 1 digital input or output, with direction set by the device channel configuration."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "bidirectional",
        "description": "Side 1 digital input or output, with direction set by the device channel configuration."
      },
      {
        "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": "bidirectional",
        "description": "Side 2 digital input or output, with direction set by the device channel configuration."
      },
      {
        "number": "11",
        "name": "B5",
        "type": "bidirectional",
        "description": "Side 2 digital input or output, with direction set by the device channel configuration."
      },
      {
        "number": "12",
        "name": "B4",
        "type": "bidirectional",
        "description": "Side 2 digital input or output, with direction set by the device channel configuration."
      },
      {
        "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, operating 2.5 V to 5.5 V and requiring 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: Pin table 5.1 is shared by Si8660/61/62/63 and lists A4-A6 and B4-B6 as Digital I/O. The Si8661BC or; Package taken from the ordering guide: the -IS1 suffix means NB SOIC-16, 3.75 kV, default output low"
        ],
        "pages_sent": 18,
        "cost_usd": 0.1636,
        "at": "2026-10-27T09:33:29"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/9db2ac442f3a4d17e06cd38bc4cfe149.pdf",
        "pages": 42,
        "sha256": "aea8c0805c804419",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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      }
    ]
  }
}