SCW8916B

{
  "schema_version": 1,
  "type": "component",
  "slug": "scw8916b",
  "title": "SCW8916B",
  "brief": "SOC Shenzhen SinOne Microelectronics Float Level Senors, SOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "sensor",
    "scw8916b"
  ],
  "component": {
    "mpn": "SCW8916B",
    "manufacturer": "SOC Shenzhen SinOne Microelectronics",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Sensor",
    "subcategory": "Float Level Senors",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8c6d94300a0d4ed687195f65b7e4df7b.pdf",
    "parts": {
      "symbol": "scw8916b.kicad_sym",
      "footprint": "scw8916b.kicad_mod",
      "model_3d": "scw8916b-etched.glb",
      "model_3d_plain": "scw8916b.glb",
      "model_3d_step": "scw8916b-etched.step",
      "model_3d_step_plain": "scw8916b.step",
      "lbr": "scw8916b.lbr"
    },
    "distributor_links": {
      "lcsc": "C93853"
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply input. Operating range 3.0V to 5.5V."
      },
      {
        "number": "2",
        "name": "C",
        "type": "passive",
        "description": "Reference capacitor pin. Connect the external reference capacitor (typ. 104 / 100nF) used by the capacitive detection front-end."
      },
      {
        "number": "3",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference (0 V) for the device."
      },
      {
        "number": "4",
        "name": "OUT4",
        "type": "output",
        "description": "Channel 4 water-level level-signal output. Outputs 1 when water is detected on CH4, 0 otherwise (active in one-to-one level output mode)."
      },
      {
        "number": "5",
        "name": "OUT3/RXD",
        "type": "bidirectional",
        "description": "Dual-function pin. In level output mode: OUT3 outputs channel 3 water-level status (1 = water, 0 = no water). In UART output mode: acts as UART RXD input."
      },
      {
        "number": "6",
        "name": "OUT2/TXD",
        "type": "output",
        "description": "Dual-function pin. In level output mode: OUT2 outputs channel 2 water-level status (1 = water, 0 = no water). In UART output mode: acts as UART TXD output at 9600 baud, refreshed every 100 ms."
      },
      {
        "number": "7",
        "name": "OUT1",
        "type": "output",
        "description": "Channel 1 water-level level-signal output. Outputs 1 when water is detected on CH1, 0 otherwise. Also used to output calibration status pulses in BCD/test mode."
      },
      {
        "number": "8",
        "name": "TEST",
        "type": "bidirectional",
        "description": "Test/calibration pin (input first, then output). Used by the host to trigger water-present/water-absent calibration and self-check routines via defined low/high pulse patterns after power-up."
      },
      {
        "number": "9",
        "name": "SENS",
        "type": "input",
        "description": "Sensitivity selection input. Connect an external resistor to VDD to select one of 8 sensitivity levels (3.3K = highest, 10K, 18K, 27K default, 39K, 51K, 68K, 82K = lowest). Also requires a 100K resistor path to VDD; both resistors must be 1% tolerance."
      },
      {
        "number": "10",
        "name": "OUTS",
        "type": "input",
        "description": "Channel output communication-mode select. 1 (float / H) selects one-to-one level output on OUT1-OUT4; 0 (tied to GND) selects UART output on TXD with all channel states refreshed every 100 ms."
      },
      {
        "number": "11",
        "name": "TOPT",
        "type": "input",
        "description": "Test/calibration mode select. 0 = calibrate lower water level only; 1 = calibrate both upper and lower water levels."
      },
      {
        "number": "12",
        "name": "CH1",
        "type": "input",
        "description": "Water-detect sense channel 1 (lowest water-level channel). Connects to the corresponding copper foil on the water-level sense PCB."
      },
      {
        "number": "13",
        "name": "CH2",
        "type": "input",
        "description": "Water-detect sense channel 2. Connects to the corresponding sense-foil; tie to VSS (GND) if unused."
      },
      {
        "number": "14",
        "name": "CH3",
        "type": "input",
        "description": "Water-detect sense channel 3. Connects to the corresponding sense-foil; tie to VSS (GND) if unused."
      },
      {
        "number": "15",
        "name": "CH4",
        "type": "input",
        "description": "Water-detect sense channel 4 (highest water-level channel). Connects to the corresponding sense-foil; tie to VSS (GND) if unused."
      },
      {
        "number": "16",
        "name": "Reserve",
        "type": "unconnected",
        "description": "Reserved pin. Leave floating on the PCB (do not connect)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/8c6d94300a0d4ed687195f65b7e4df7b.pdf",
        "pages": 7,
        "sha256": "797e42d9aab4632e",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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    "pin1": {
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      "at": [
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        -4.445
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-16_3.9x9.9mm_P1.27mm@sha256:f9b5075740f7816c",
      "mark": "drawn"
    },
    "models_3d": [
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        "role": "plain",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "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)"
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        "sha256": "896ab16c50dcb977e98ec2409dcb54cc279789310665a7594a764199939fc247",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "SOC Shenzhen SinOne Microelectronics",
      "Package": "SOP-16",
      "Category": "Sensor",
      "Pins": "16"
    }
  },
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
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  "discovery_pitch": "SCW8916B (SOC Shenzhen SinOne Microelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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    "scw8916b.step",
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    "scw8916b.lbr",
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    "docs/scw8916b-datasheet.pdf",
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  "visibility": {
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  "updated_at": "2026-09-25T05:36:44.015Z"
}