ESD56181W12-2

{
  "slug": "esd56181w12-2",
  "version": "0.1.0",
  "type": "component",
  "description": "WILLSEMI Will Semicon ESD And Surge Protection (TVS/ESD), SOD-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "circuit protection",
    "esd56181w12-2",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "esd56181w12-2.kicad_sym",
    "esd56181w12-2.kicad_mod",
    "esd56181w12-2.glb",
    "esd56181w12-2.step",
    "esd56181w12-2.lbr",
    "docs/hero.png",
    "docs/esd56181w12-2-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "esd56181w12-2-hero.glb",
    "esd56181w12-2-hero.overlay.json",
    "esd56181w12-2-etched.glb"
  ],
  "component": {
    "mpn": "ESD56181W12-2",
    "manufacturer": "WILLSEMI Will Semicon",
    "package": "SOD-323",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590208224181063680",
    "parts": {
      "symbol": "esd56181w12-2.kicad_sym",
      "footprint": "esd56181w12-2.kicad_mod",
      "model_3d": "esd56181w12-2-hero.glb",
      "model_3d_plain": "esd56181w12-2-etched.glb",
      "model_3d_step": "esd56181w12-2-etched.step",
      "model_3d_step_plain": "esd56181w12-2.step",
      "lbr": "esd56181w12-2.lbr"
    },
    "distributor_links": {
      "lcsc": "C2939835"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T18:47:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Pin1",
        "type": "passive",
        "description": "Pin 1 is one of the two terminals of this uni-directional TVS, and the datasheet measures the device's voltage parameters from pin 1 to pin 2 but does not state its individual function."
      },
      {
        "number": "2",
        "name": "Pin2",
        "type": "passive",
        "description": "Pin 2 is the second terminal of this uni-directional TVS, and the datasheet measures the device's voltage parameters from pin 1 to pin 2 but does not state its individual function."
      }
    ],
    "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 datasheet gives SOD-323 package and labels pins 1 and 2 (marking view 'Pin1 Pin2'; Table 4 note ; The ESD56181W12-2/TR (Table 1, SOD-323, 3000/Tape&Reel, marking TM*) is the variant matching this MP"
        ],
        "pages_sent": 6,
        "cost_usd": 0.022,
        "at": "2026-10-22T18:47:08"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590208224181063680",
        "pages": 6,
        "sha256": "ab0dcfd2f150c0fb",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "esd56181w12-2.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          1.25,
          1.11
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cd8619b2119cd95683a2c5e660ab4f2d4db674f696cd6f9e9756f221171a214d",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "esd56181w12-2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          1.25,
          1.11
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "038318be227655460425aa13d13cba142c28a68f909d4cae78e812a4d21d7446",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}