CA-IS3021W

{
  "schema_version": 1,
  "type": "component",
  "slug": "ca-is3021w",
  "title": "CA-IS3021W",
  "brief": "Chipanalog I2C Isolators, SOIC-16-300mil. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "signal isolation devices",
    "ca-is3021w"
  ],
  "component": {
    "mpn": "CA-IS3021W",
    "manufacturer": "Chipanalog",
    "package": "SOIC-16-300mil",
    "pin_count": 16,
    "category": "Signal Isolation Devices",
    "subcategory": "I2C Isolators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602834765829447680",
    "parts": {
      "symbol": "ca-is3021w.kicad_sym",
      "footprint": "ca-is3021w.kicad_mod",
      "model_3d": "ca-is3021w-etched.glb",
      "model_3d_plain": "ca-is3021w.glb",
      "model_3d_step": "ca-is3021w-etched.step",
      "model_3d_step_plain": "ca-is3021w.step",
      "lbr": "ca-is3021w.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "GNDA",
        "type": "power_in",
        "description": "Side A ground reference."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating (do not connect externally)."
      },
      {
        "number": "3",
        "name": "VDDA",
        "type": "power_in",
        "description": "Side A supply input, 3.0 V to 5.5 V. Bypass to GNDA with a local decoupling capacitor."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating (do not connect externally)."
      },
      {
        "number": "5",
        "name": "SDAA",
        "type": "bidirectional",
        "description": "Side A bidirectional I2C data (open-drain). Mirrors SDAB across the isolation barrier; requires external pull-up to VDDA."
      },
      {
        "number": "6",
        "name": "SCLA",
        "type": "input",
        "description": "Side A I2C clock input. Drives the unidirectional SCL channel that appears at SCLB on side B."
      },
      {
        "number": "7",
        "name": "GNDA",
        "type": "power_in",
        "description": "Side A ground reference (redundant pin, tie to pin 1)."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating (do not connect externally)."
      },
      {
        "number": "9",
        "name": "GNDB",
        "type": "power_in",
        "description": "Side B ground reference."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating (do not connect externally)."
      },
      {
        "number": "11",
        "name": "SCLB",
        "type": "output",
        "description": "Side B I2C clock output (open-drain), driven from SCLA on side A. Requires external pull-up to VDDB."
      },
      {
        "number": "12",
        "name": "SDAB",
        "type": "bidirectional",
        "description": "Side B bidirectional I2C data (open-drain). Mirrors SDAA across the isolation barrier; requires external pull-up to VDDB."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating (do not connect externally)."
      },
      {
        "number": "14",
        "name": "VDDB",
        "type": "power_in",
        "description": "Side B supply input, 3.0 V to 5.5 V. Bypass to GNDB with a local decoupling capacitor."
      },
      {
        "number": "15",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating (do not connect externally)."
      },
      {
        "number": "16",
        "name": "GNDB",
        "type": "power_in",
        "description": "Side B ground reference (redundant pin, tie to pin 9)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602834765829447680",
        "pages": 22,
        "sha256": "f22cb16e7b686413",
        "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": "ca-is3021w.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ca-is3021w-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ae1a3ead25057b92d41b9df045e414f0ca889b91f48a765530400c61557c40d3",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Chipanalog",
      "Package": "SOIC-16-300mil",
      "Category": "Signal Isolation Devices",
      "Pins": "16"
    }
  },
  "variants": [
    {
      "mpn": "CA-IS3021WW",
      "kind": "packaging"
    },
    {
      "mpn": "CA-IS3021WG",
      "kind": "packaging"
    },
    {
      "mpn": "CA-IS3021WS",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ca-is3021w"
  ],
  "discovery_pitch": "CA-IS3021W (Chipanalog) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ca-is3021w.kicad_sym",
    "ca-is3021w.kicad_mod",
    "ca-is3021w.glb",
    "ca-is3021w.step",
    "ca-is3021w.lbr",
    "docs/hero.png",
    "docs/ca-is3021w-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T18:24:13.042Z"
}