BL7141WH

{
  "schema_version": 1,
  "type": "component",
  "slug": "bl7141wh",
  "title": "BL7141WH",
  "brief": "BL Shanghai Belling Digital 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",
    "comm-uart",
    "bl7141wh"
  ],
  "component": {
    "mpn": "BL7141WH",
    "manufacturer": "BL Shanghai Belling",
    "package": "SOIC-16-300mil",
    "pin_count": 16,
    "category": "Comm/UART",
    "subcategory": "Digital Isolators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2210081801_BL-Shanghai-Belling-BL7141WH_C5185884.pdf",
    "parts": {
      "symbol": "bl7141wh.kicad_sym",
      "footprint": "bl7141wh.kicad_mod",
      "model_3d": "bl7141wh-etched.glb",
      "model_3d_plain": "bl7141wh.glb",
      "model_3d_step": "bl7141wh-etched.step",
      "model_3d_step_plain": "bl7141wh.step",
      "lbr": "bl7141wh.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VDD1",
        "type": "power_in",
        "description": "Side-1 supply, 2.5 V to 5.5 V. Bypass to GND1 with 100 nF placed within 2 mm."
      },
      {
        "number": "2",
        "name": "GND1",
        "type": "power_in",
        "description": "Side-1 reference ground. Common to pin 8 internally."
      },
      {
        "number": "3",
        "name": "VIA",
        "type": "input",
        "description": "Channel A digital input (side 1 → side 2 forward). Logic level referenced to VDD1: VIH = 0.7 x VDD1, VIL = 0.25 x VDD1."
      },
      {
        "number": "4",
        "name": "VIB",
        "type": "input",
        "description": "Channel B digital input (side 1 → side 2 forward). Logic level referenced to VDD1."
      },
      {
        "number": "5",
        "name": "VIC",
        "type": "input",
        "description": "Channel C digital input (side 1 → side 2 forward). Logic level referenced to VDD1."
      },
      {
        "number": "6",
        "name": "VOD",
        "type": "output",
        "description": "Channel D digital output on side 1 (reverse channel, side 2 → side 1). Drive strength at 5 V: IOH = -4 mA, IOL = 4 mA. Default state is HIGH (WH variant) when input floats or VDDI is unpowered."
      },
      {
        "number": "7",
        "name": "EN1",
        "type": "input",
        "description": "Side-1 output enable. Active high or floating enables side-1 outputs (pin 6 VOD on BL7141); tie low to place side-1 outputs in high-impedance (Z) state."
      },
      {
        "number": "8",
        "name": "GND1",
        "type": "power_in",
        "description": "Side-1 reference ground (second GND1 pin, common with pin 2)."
      },
      {
        "number": "9",
        "name": "GND2",
        "type": "power_in",
        "description": "Side-2 reference ground. Isolated from GND1 by the SiO2 barrier (5 kVrms working, 8 kVpk transient)."
      },
      {
        "number": "10",
        "name": "EN2",
        "type": "input",
        "description": "Side-2 output enable. Active high or floating enables side-2 outputs (VOA, VOB, VOC); tie low to place side-2 outputs in high-impedance (Z) state."
      },
      {
        "number": "11",
        "name": "VID",
        "type": "input",
        "description": "Channel D digital input on side 2 (reverse channel, side 2 → side 1). Logic level referenced to VDD2."
      },
      {
        "number": "12",
        "name": "VOC",
        "type": "output",
        "description": "Channel C digital output on side 2 (forward channel). Drive strength at 5 V: IOH = -4 mA, IOL = 4 mA. Default HIGH (WH variant) when VIC is floating or VDDI is unpowered."
      },
      {
        "number": "13",
        "name": "VOB",
        "type": "output",
        "description": "Channel B digital output on side 2 (forward). Default HIGH (WH variant) on floating input or unpowered VDDI."
      },
      {
        "number": "14",
        "name": "VOA",
        "type": "output",
        "description": "Channel A digital output on side 2 (forward). Default HIGH (WH variant) on floating input or unpowered VDDI."
      },
      {
        "number": "15",
        "name": "GND2",
        "type": "power_in",
        "description": "Side-2 reference ground (second GND2 pin, common with pin 9)."
      },
      {
        "number": "16",
        "name": "VDD2",
        "type": "power_in",
        "description": "Side-2 supply, 2.5 V to 5.5 V. Bypass to GND2 with 100 nF placed within 2 mm."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2210081801_BL-Shanghai-Belling-BL7141WH_C5185884.pdf",
        "pages": 15,
        "sha256": "1bc81353fbdb9441",
        "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": "bl7141wh.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bl7141wh-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": "125029fb7dcf57afede664e5423b8db68f261125e92f3048994caf3b7b50d029",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BL Shanghai Belling",
      "Package": "SOIC-16-300mil",
      "Category": "Comm/UART",
      "Pins": "16"
    }
  },
  "variants": [
    {
      "mpn": "BL7141WH",
      "kind": "packaging"
    },
    {
      "mpn": "BL7141WL",
      "kind": "unknown"
    },
    {
      "mpn": "BL7140WH",
      "kind": "unknown"
    },
    {
      "mpn": "BL7140WL",
      "kind": "unknown"
    },
    {
      "mpn": "BL7142WH",
      "kind": "unknown"
    },
    {
      "mpn": "BL7142WL",
      "kind": "unknown"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bl7141wh"
  ],
  "discovery_pitch": "BL7141WH (BL Shanghai Belling) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bl7141wh.kicad_sym",
    "bl7141wh.kicad_mod",
    "bl7141wh.glb",
    "bl7141wh.step",
    "bl7141wh.lbr",
    "docs/hero.png",
    "docs/bl7141wh-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:51:25.031Z"
}