PESD0402MS18

{
  "slug": "pesd0402ms18",
  "version": "0.1.0",
  "type": "component",
  "description": "TWGMC ESD And Surge Protection (TVS/ESD), 0402. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "circuit protection",
    "pesd0402ms18",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "pesd0402ms18.kicad_sym",
    "pesd0402ms18.kicad_mod",
    "pesd0402ms18.glb",
    "pesd0402ms18.step",
    "pesd0402ms18.lbr",
    "docs/hero.png",
    "docs/pesd0402ms18-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "pesd0402ms18-hero.glb",
    "pesd0402ms18-hero.overlay.json"
  ],
  "component": {
    "mpn": "PESD0402MS18",
    "manufacturer": "TWGMC",
    "package": "0402",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/f062b264bcd4dbda916343e6dd6413b1.pdf",
    "parts": {
      "symbol": "pesd0402ms18.kicad_sym",
      "footprint": "pesd0402ms18.kicad_mod",
      "model_3d": "pesd0402ms18-hero.glb",
      "model_3d_plain": "pesd0402ms18.glb",
      "model_3d_step": "pesd0402ms18-etched.step",
      "model_3d_step_plain": "pesd0402ms18.step",
      "lbr": "pesd0402ms18.lbr"
    },
    "distributor_links": {
      "lcsc": "C47283688"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T10:27:57Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A",
        "type": "passive",
        "description": "One terminal of the bi-directional ESD suppressor, connected to the protected line; rated for 18 V maximum continuous operating voltage and ±8 kV contact / ±15 kV air ESD per IEC 61000-4-2."
      },
      {
        "number": "2",
        "name": "B",
        "type": "passive",
        "description": "Second terminal of the bi-directional ESD suppressor, connected to ground or the return reference; the device is symmetric, with 0.05 pF typical capacitance and less than 100 nA leakage."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet schematic and package drawing show two unlabeled end pads on a bi-directional device. ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 3,
        "cost_usd": 0.1002,
        "at": "2026-10-09T10:24:13"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/f062b264bcd4dbda916343e6dd6413b1.pdf",
        "pages": 3,
        "sha256": "d6084d19b1d32d5a",
        "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": "pesd0402ms18.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          1.02,
          0.52,
          0.4
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "af8d6f8c3a3fbbfa3e34b84001f940451041bc3c69421d6db9cc105b9ea22f49",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "pesd0402ms18-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          1.02,
          0.52,
          0.4
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "715ccbd960d8a8b61f91b63b3dd11019aa67f1d66517f9e66190edd904fb9e35",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}