ESD5491S-2

{
  "slug": "esd5491s-2",
  "version": "0.1.0",
  "type": "component",
  "description": "WILLSEMI(Will Semicon) ESD Protection Devices, SOD-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "tvs-fuse-board level protection",
    "esd5491s-2",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "esd5491s-2.kicad_sym",
    "esd5491s-2.kicad_mod",
    "esd5491s-2.glb",
    "esd5491s-2.step",
    "esd5491s-2.lbr",
    "docs/hero.png",
    "docs/esd5491s-2-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "esd5491s-2-hero.glb",
    "esd5491s-2-hero.overlay.json",
    "esd5491s-2-etched.glb"
  ],
  "component": {
    "mpn": "ESD5491S-2",
    "manufacturer": "WILLSEMI(Will Semicon)",
    "package": "SOD-523",
    "pin_count": 2,
    "category": "TVS/Fuse/Board Level Protection",
    "subcategory": "ESD Protection Devices",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/4e2cb2c1e1a4a82d41afe80129b392d1.pdf",
    "parts": {
      "symbol": "esd5491s-2.kicad_sym",
      "footprint": "esd5491s-2.kicad_mod",
      "model_3d": "esd5491s-2-hero.glb",
      "model_3d_plain": "esd5491s-2-etched.glb",
      "model_3d_step": "esd5491s-2-etched.step",
      "model_3d_step_plain": "esd5491s-2.step",
      "lbr": "esd5491s-2.lbr"
    },
    "distributor_links": {
      "lcsc": "C5140546"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T11:32:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Pin1",
        "type": "passive",
        "description": "Bi-directional TVS terminal 1 (circuit diagram Pin1), protects one line with stand-off voltage of ±3.3V max and ±30kV IEC61000-4-2 contact ESD rating; interchangeable with Pin2."
      },
      {
        "number": "2",
        "name": "Pin2",
        "type": "passive",
        "description": "Bi-directional TVS terminal 2 (circuit diagram Pin2), protects one line with stand-off voltage of ±3.3V max and 9A (8/20μs) peak pulse current; interchangeable with Pin1."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Datasheet shows only 'Pin1' and 'Pin2' in the circuit diagram and marking; no pin-name table is give; MPN ESD5491S-2 is not literally listed; the order information lists ESD5491S-2/TR in SOD-523 (tape a"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0409,
        "at": "2026-10-22T11:31:00"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/4e2cb2c1e1a4a82d41afe80129b392d1.pdf",
        "pages": 7,
        "sha256": "413b836f01cc9241",
        "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": "esd5491s-2.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          1.6,
          0.8,
          0.63
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b525222377930c32abea58606bffba3aaf171cc66ac292b82d28a82d646d995d",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "esd5491s-2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          1.6,
          0.8,
          0.63
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "23272fc73d0e9ae14919a51f27ec5cfa76396546d18d0947ef735972aeb966c4",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}