MDC04

{
  "schema_version": 1,
  "type": "component",
  "slug": "mdc04",
  "title": "MDC04",
  "brief": "Mysentech Float Level Senors, QFN-20-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "sensors",
    "mdc04",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MDC04",
    "manufacturer": "Mysentech",
    "package": "QFN-20-EP(3x3)",
    "pin_count": 21,
    "category": "Sensors",
    "subcategory": "Float Level Senors",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588919425978679296",
    "parts": {
      "symbol": "mdc04.kicad_sym",
      "footprint": "mdc04.kicad_mod",
      "model_3d": "mdc04-hero.glb",
      "model_3d_plain": "mdc04.glb",
      "model_3d_step": "mdc04-etched.step",
      "model_3d_step_plain": "mdc04.step",
      "lbr": "mdc04.lbr"
    },
    "distributor_links": {
      "lcsc": "C2843541"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T15:51:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RSTN",
        "type": "input",
        "description": "Active-low reset input; pulling it low for at least 1 µs resets the sensor, and it is internally pulled up to VDD."
      },
      {
        "number": "2",
        "name": "MODE",
        "type": "input",
        "description": "Interface mode select: when low (0) PIN12 is the I²C SDA line, when high (1) PIN12 is the 1-Wire DQ line; tie to VDD for 1-Wire and to GND for I²C."
      },
      {
        "number": "3",
        "name": "VSS",
        "type": "power_in",
        "description": "Power ground for the device."
      },
      {
        "number": "4",
        "name": "C4_OUT",
        "type": "output",
        "description": "Analog output terminal for external capacitor C4 (channel 4 sense electrode)."
      },
      {
        "number": "5",
        "name": "C4_IN",
        "type": "input",
        "description": "Analog input terminal for external capacitor C4 (channel 4 sense electrode)."
      },
      {
        "number": "6",
        "name": "C1_IN",
        "type": "input",
        "description": "Analog input terminal for external capacitor C1 (channel 1 sense electrode)."
      },
      {
        "number": "7",
        "name": "C1_OUT",
        "type": "output",
        "description": "Analog output terminal for external capacitor C1 (channel 1 sense electrode)."
      },
      {
        "number": "8",
        "name": "C2_IN",
        "type": "input",
        "description": "Analog input terminal for external capacitor C2 (channel 2 sense electrode)."
      },
      {
        "number": "9",
        "name": "C2_OUT",
        "type": "output",
        "description": "Analog output terminal for external capacitor C2 (channel 2 sense electrode)."
      },
      {
        "number": "10",
        "name": "C3_IN",
        "type": "input",
        "description": "Analog input terminal for external capacitor C3 (channel 3 sense electrode)."
      },
      {
        "number": "11",
        "name": "C3_OUT",
        "type": "output",
        "description": "Analog output terminal for external capacitor C3 (channel 3 sense electrode)."
      },
      {
        "number": "12",
        "name": "SDA/DQ",
        "type": "bidirectional",
        "description": "I/O carrying I²C data (when MODE=0) or the 1-Wire data line (when MODE=1); it needs an external pull-up to VDD (Rup 1-100 kΩ per Table 7.1)."
      },
      {
        "number": "13",
        "name": "ADDR",
        "type": "input",
        "description": "I²C address select that must not float: low gives address 0x44 and high gives 0x45; it must be grounded in 1-Wire mode."
      },
      {
        "number": "14",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "15",
        "name": "SCL",
        "type": "bidirectional",
        "description": "I²C clock line (I/O) that must not float; it must be grounded in 1-Wire mode and supports 100 kHz standard and 400 kHz fast mode."
      },
      {
        "number": "16",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "17",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "18",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "19",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "20",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply input; the datasheet specifies 2.0 V to 5.5 V operation (absolute maximum −0.3 V to 6 V)."
      },
      {
        "number": "21",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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: Package mismatch check: the datasheet only gives the MDC04 package as QFN20 3*3*0.75mm. The requeste; Pin types for C*_IN and C*_OUT follow the datasheet's labels 'analog input' and 'analog output'. The; Pin descriptions are translated from the Chinese datasheet. The MODE, ADDR and SCL/SDA mode notes co",
          "exposed pad 21 added from the footprint"
        ],
        "pages_sent": 36,
        "cost_usd": 0.1389,
        "at": "2026-10-09T15:49:26"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588919425978679296",
        "pages": 36,
        "sha256": "e94729c5dafcc801",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "mdc04.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3,
          3,
          0.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "0ee4e1082236390795238cd34b082d96efd160d6292c636cc40201a5a30cdc63",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mdc04-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3,
          3,
          0.52
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "236dc0fa3340714a6ea46ca8e1403e2931e1ed74646c745c7162e02a670f79b9",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Mysentech",
      "Package": "QFN-20-EP(3x3)",
      "Category": "Sensors",
      "Pins": "21"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mdc04"
  ],
  "discovery_pitch": "MDC04 (Mysentech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mdc04.kicad_sym",
    "mdc04.kicad_mod",
    "mdc04.glb",
    "mdc04.step",
    "mdc04.lbr",
    "docs/hero.png",
    "docs/mdc04-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mdc04-hero.glb",
    "mdc04-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}