CH443K

{
  "schema_version": 1,
  "type": "component",
  "slug": "ch443k",
  "title": "CH443K",
  "brief": "WCH Jiangsu Qin Heng Analog Switches, Multiplexers, SC-70-6(SOT-363). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "ch443k"
  ],
  "component": {
    "mpn": "CH443K",
    "manufacturer": "WCH Jiangsu Qin Heng",
    "package": "SC-70-6(SOT-363)",
    "pin_count": 6,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6bebcfadcee060287c47b0bc91ef1064.pdf",
    "parts": {
      "symbol": "ch443k.kicad_sym",
      "footprint": "ch443k.kicad_mod",
      "model_3d": "ch443k-etched.glb",
      "model_3d_plain": "ch443k.glb",
      "model_3d_step": "ch443k-etched.step",
      "model_3d_step_plain": "ch443k.step",
      "lbr": "ch443k.lbr"
    },
    "distributor_links": {
      "lcsc": "C125185"
    },
    "pins": [
      {
        "number": "1",
        "name": "CH1",
        "type": "passive",
        "description": "Analog switch throw #2 (S2B). Connected to COM when SEL = high. Recommended analog signal range 0 to 2.8 V (VANA), absolute limit -0.3 to VCC+0.3 V. Ron ≈ 5 Ω typ."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground, digital signal reference."
      },
      {
        "number": "3",
        "name": "CH0",
        "type": "passive",
        "description": "Analog switch throw #1 (S1B). Connected to COM when SEL = low. Recommended analog signal range 0 to 2.8 V (VANA), absolute limit -0.3 to VCC+0.3 V. Ron ≈ 5 Ω typ."
      },
      {
        "number": "4",
        "name": "COM",
        "type": "passive",
        "description": "Common pole (DB) of the SPDT analog switch. Routed to CH0 when SEL=0 and to CH1 when SEL=1. Bidirectional analog path."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply. Rated 5 V (operating 4.0-5.5 V), abs max 6.5 V. Static ICC ≈ 0.1 µA typ with digital pins tied to rails."
      },
      {
        "number": "6",
        "name": "SEL",
        "type": "input",
        "description": "Digital channel-select input. SEL=low selects CH0→COM; SEL=high selects CH1→COM. VIL max 1.0 V, VIH min 2.0 V (referenced to VCC)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/6bebcfadcee060287c47b0bc91ef1064.pdf",
        "pages": 16,
        "sha256": "608400255c2b0865",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -0.8375,
        -0.65
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-363_SC-70-6@sha256:0659d885e00b7869",
      "mark": "drawn"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "WCH Jiangsu Qin Heng",
      "Package": "SC-70-6(SOT-363)",
      "Category": "Interface",
      "Pins": "6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ch443k"
  ],
  "discovery_pitch": "CH443K (WCH Jiangsu Qin Heng) 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",
    "ch443k.kicad_sym",
    "ch443k.kicad_mod",
    "ch443k.glb",
    "ch443k.step",
    "ch443k-etched.step",
    "ch443k.lbr",
    "docs/hero.png",
    "docs/ch443k-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "CH443K",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T19:01:51.454Z"
}