ET3157

{
  "schema_version": 1,
  "type": "component",
  "slug": "et3157",
  "title": "ET3157",
  "brief": "UMW Analog Switches, Multiplexers, SC-70-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "et3157"
  ],
  "component": {
    "mpn": "ET3157",
    "manufacturer": "UMW",
    "package": "SC-70-6",
    "pin_count": 6,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2311091739_UMW-Youtai-Semiconductor-Co---Ltd--ET3157_C2904735.pdf",
    "parts": {
      "symbol": "et3157.kicad_sym",
      "footprint": "et3157.kicad_mod",
      "model_3d": "et3157-etched.glb",
      "model_3d_plain": "et3157.glb",
      "model_3d_step": "et3157-etched.step",
      "model_3d_step_plain": "et3157.step",
      "lbr": "et3157.lbr"
    },
    "distributor_links": {
      "lcsc": "C2904735"
    },
    "pins": [
      {
        "number": "1",
        "name": "B1",
        "type": "bidirectional",
        "description": "Analog switch data port B1. Passes through to A when Select is high. Analog signal range 0 to VCC; on-resistance typ 3-17Ω depending on VCC."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / substrate reference (Land)."
      },
      {
        "number": "3",
        "name": "B0",
        "type": "bidirectional",
        "description": "Analog switch data port B0. Passes through to A when Select is low. Analog signal range 0 to VCC."
      },
      {
        "number": "4",
        "name": "A",
        "type": "bidirectional",
        "description": "Common analog switch port A. Connects to B0 (Select=L) or B1 (Select=H). Bidirectional analog signal path."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, 1.65V to 5.5V operating (absolute max 7V). Sets the analog signal range and logic thresholds."
      },
      {
        "number": "6",
        "name": "Select",
        "type": "input",
        "description": "Digital channel-select input with over-voltage tolerance up to 7V (may exceed VCC). L = route B0→A, H = route B1→A. Must not be left floating."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2311091739_UMW-Youtai-Semiconductor-Co---Ltd--ET3157_C2904735.pdf",
        "pages": 13,
        "sha256": "3aefe2b48b982b83",
        "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"
    },
    "models_3d": [
      {
        "file": "et3157.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.1,
          2,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "045cc95e18ee7a13d1623c3ce6604fc833049bdb4f952f68c26e3c5767d122e4",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "et3157-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.1,
          2,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2e3e034aed2eb391a1ec63701ae58bc3bdd1e3579661c9d1052a007d08c58dc8",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Unknown",
      "Package": "SC-70-6",
      "Category": "Interface",
      "Pins": "6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "et3157"
  ],
  "discovery_pitch": "ET3157 (Unknown) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "et3157.kicad_sym",
    "et3157.kicad_mod",
    "et3157.glb",
    "et3157.step",
    "et3157-etched.step",
    "et3157.lbr",
    "docs/hero.png",
    "docs/et3157-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "updated_at": "2026-09-24T20:26:08.314Z"
}