CH9101N

{
  "slug": "ch9101n",
  "version": "0.1.0",
  "type": "component",
  "description": "WCH Jiangsu Qin Heng USB Converters, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "ch9101n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ch9101n.kicad_sym",
    "ch9101n.kicad_mod",
    "ch9101n.glb",
    "ch9101n.step",
    "ch9101n.lbr",
    "docs/hero.png",
    "docs/ch9101n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ch9101n-hero.glb",
    "ch9101n-hero.overlay.json",
    "ch9101n-etched.glb"
  ],
  "component": {
    "mpn": "CH9101N",
    "manufacturer": "WCH Jiangsu Qin Heng",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "USB Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618868201438388224",
    "parts": {
      "symbol": "ch9101n.kicad_sym",
      "footprint": "ch9101n.kicad_mod",
      "model_3d": "ch9101n-hero.glb",
      "model_3d_plain": "ch9101n-etched.glb",
      "model_3d_step": "ch9101n-etched.step",
      "model_3d_step_plain": "ch9101n.step",
      "lbr": "ch9101n.lbr"
    },
    "distributor_links": {
      "lcsc": "C5187518"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T03:34:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground for the device, which must be connected to the USB bus ground."
      },
      {
        "number": "2",
        "name": "TXD",
        "type": "output",
        "description": "UART serial data output, idle high."
      },
      {
        "number": "3",
        "name": "VIO",
        "type": "power_in",
        "description": "I/O port supply input for the UART pins, supporting 1.8 V to 5 V, which should share the MCU supply; requires an external decoupling capacitor."
      },
      {
        "number": "4",
        "name": "RXD",
        "type": "input",
        "description": "UART serial data input, idle high, with an internal pull-up resistor."
      },
      {
        "number": "5",
        "name": "UD+",
        "type": "bidirectional",
        "description": "USB D+ data line connected directly to the USB bus; no series resistor may be added."
      },
      {
        "number": "6",
        "name": "UD-",
        "type": "bidirectional",
        "description": "USB D- data line connected directly to the USB bus; no series resistor may be added."
      },
      {
        "number": "7",
        "name": "VDD5",
        "type": "power_in",
        "description": "Positive supply input to the internal regulator, requiring an external decoupling capacitor; 4.0 V to 5.5 V when V3 is not tied to VDD5."
      },
      {
        "number": "8",
        "name": "V3",
        "type": "power_out",
        "description": "Internal regulator output and supply for the core and USB transceiver; tie to VDD5 for 3.0 V to 3.6 V operation, otherwise decouple with an external capacitor (about 0.1 uF)."
      }
    ],
    "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 table text is garbled across columns; SOP8 numbers were read from the column order on page 2; The datasheet labels V3 only as '电源' (power). Type power_out was chosen because it is the regulator ; The datasheet does not state an ERC direction for UD+/UD-. Type bidirectional was chosen as the stan"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0508,
        "at": "2026-10-18T03:33:13"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618868201438388224",
        "pages": 8,
        "sha256": "56f3f6ae260d9731",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ch9101n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ch9101n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7656d7e36c4a649c1a4d0497f0fade7633dd16385c82c40f36ea2cf465fc9e32",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}