SMPC33A-M3

{
  "slug": "smpc33a-m3",
  "version": "0.1.0",
  "type": "component",
  "description": "Vishay Intertech ESD And Surge Protection (TVS/ESD), TO-277A. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "circuit protection",
    "smpc33a-m3",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "smpc33a-m3.kicad_sym",
    "smpc33a-m3.kicad_mod",
    "smpc33a-m3.glb",
    "smpc33a-m3.step",
    "smpc33a-m3.lbr",
    "docs/hero.png",
    "docs/smpc33a-m3-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "smpc33a-m3-hero.glb",
    "smpc33a-m3-hero.overlay.json",
    "smpc33a-m3-etched.glb"
  ],
  "component": {
    "mpn": "SMPC33A-M3",
    "manufacturer": "Vishay Intertech",
    "package": "TO-277A",
    "pin_count": 3,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589787880965890048",
    "parts": {
      "symbol": "smpc33a-m3.kicad_sym",
      "footprint": "smpc33a-m3.kicad_mod",
      "model_3d": "smpc33a-m3-hero.glb",
      "model_3d_plain": "smpc33a-m3-etched.glb",
      "model_3d_step": "smpc33a-m3-etched.step",
      "model_3d_step_plain": "smpc33a-m3.step",
      "lbr": "smpc33a-m3.lbr"
    },
    "distributor_links": {
      "lcsc": "C1984544"
    },
    "distributor_check": {
      "checked_at": "2026-10-12T19:57:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Cathode 1",
        "type": "passive",
        "description": "Cathode-side terminal 1 of the SMPC33A transient voltage suppressor, per the pinout drawing for the SMPCxxA variant; the datasheet states the cathode band marks the cathode end and that electrical characteristics apply only when two identical-polarity terminals are connected."
      },
      {
        "number": "2",
        "name": "Anode Cathode 2",
        "type": "passive",
        "description": "Terminal 2 is labelled 'Anode Cathode 2' in the pinout drawing, so its polarity is not stated unambiguously in the text and it should be confirmed against the drawing or manufacturer before layout."
      },
      {
        "number": "3",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 pinout drawing text on page 1 is garbled, and the pin-to-polarity assignment for the SMPCxxA (no; The datasheet has no pinout table. Pin numbers 1 and 2 come only from the small package drawing on p; The ordering examples list only SMPC5.0A-M3/86A, /87A and SMPC22AN variants. The datasheet says pack",
          "exposed pad 3 added from the footprint"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0452,
        "at": "2026-10-12T19:57:03"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589787880965890048",
        "pages": 6,
        "sha256": "632200d8d69aa343",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "smpc33a-m3.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.6,
          6.5,
          1.22
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "69a9aa5a47db4a2792452bac34f2cad6cb0c5d3a4713f4b3c03b779f23d194ed",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "smpc33a-m3-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.6,
          6.5,
          1.22
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1000fb8c5ef0dba13068cff9f75682490d11d685834a1184b6414a898c53785b",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}