SMF350A

{
  "slug": "smf350a",
  "version": "0.1.0",
  "type": "component",
  "description": "YFW Electrostatic And Surge Protection (TVS/ESD), SOD-123FL. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "tvs-fuse-board level protection",
    "smf350a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "smf350a.kicad_sym",
    "smf350a.kicad_mod",
    "smf350a.glb",
    "smf350a.step",
    "smf350a.lbr",
    "docs/hero.png",
    "docs/smf350a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "smf350a-hero.glb",
    "smf350a-hero.overlay.json",
    "smf350a-etched.glb"
  ],
  "component": {
    "mpn": "SMF350A",
    "manufacturer": "YFW",
    "package": "SOD-123FL",
    "pin_count": 2,
    "category": "TVS/Fuse/Board Level Protection",
    "subcategory": "Electrostatic And Surge Protection (TVS/ESD)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ee12b7486abe12580f4b4b005285feda.pdf",
    "parts": {
      "symbol": "smf350a.kicad_sym",
      "footprint": "smf350a.kicad_mod",
      "model_3d": "smf350a-hero.glb",
      "model_3d_plain": "smf350a-etched.glb",
      "model_3d_step": "smf350a-etched.step",
      "model_3d_step_plain": "smf350a.step",
      "lbr": "smf350a.lbr"
    },
    "distributor_links": {
      "lcsc": "C20606480"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T18:54:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Cathode",
        "type": "passive",
        "description": "Cathode of the unipolar SMF350A TVS diode, with 350 V working peak reverse voltage, 391 V to 432 V breakdown at 1 mA, and 567 V max clamping voltage at 0.4 A peak pulse current."
      },
      {
        "number": "2",
        "name": "Anode",
        "type": "passive",
        "description": "Anode of the unipolar SMF350A TVS diode, rated for 200 W peak pulse power (10/1000 us) and 1 uA max reverse leakage at VRWM."
      }
    ],
    "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: Pin types are set to passive because the datasheet gives only the pinning (1 Cathode, 2 Anode) for a; Page 2 table columns are not labelled for each row, so the IPP value of 0.4 A for SMF350A is read fr"
        ],
        "pages_sent": 4,
        "cost_usd": 0.0461,
        "at": "2026-10-22T18:54:30"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ee12b7486abe12580f4b4b005285feda.pdf",
        "pages": 4,
        "sha256": "e622291b3f700ab4",
        "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": "smf350a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.5,
          1.6,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "132323445e3d1f9231e81c083cd88a33cd204dd8b96063bb2ed1f3ab4470c7e7",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "smf350a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.5,
          1.6,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "fa9c747ad8b6446a041d289fee20a799a9ce189342a30b5cdbe55bcc6eec2492",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}