SMF4L16CA

{
  "slug": "smf4l16ca",
  "version": "0.1.0",
  "type": "component",
  "description": "Littelfuse TVS, SOD-123FL. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "tvs-fuse-board level protection",
    "smf4l16ca",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "smf4l16ca.kicad_sym",
    "smf4l16ca.kicad_mod",
    "smf4l16ca.glb",
    "smf4l16ca.step",
    "smf4l16ca.lbr",
    "docs/hero.png",
    "docs/smf4l16ca-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "smf4l16ca-hero.glb",
    "smf4l16ca-hero.overlay.json",
    "smf4l16ca-etched.glb"
  ],
  "component": {
    "mpn": "SMF4L16CA",
    "manufacturer": "Littelfuse",
    "package": "SOD-123FL",
    "pin_count": 2,
    "category": "TVS/Fuse/Board Level Protection",
    "subcategory": "TVS",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/59e645d82073d2db697975a783dd24db.pdf",
    "parts": {
      "symbol": "smf4l16ca.kicad_sym",
      "footprint": "smf4l16ca.kicad_mod",
      "model_3d": "smf4l16ca-hero.glb",
      "model_3d_plain": "smf4l16ca-etched.glb",
      "model_3d_step": "smf4l16ca-etched.step",
      "model_3d_step_plain": "smf4l16ca.step",
      "lbr": "smf4l16ca.lbr"
    },
    "distributor_links": {
      "lcsc": "C1849666",
      "digikey": "18-SMF4L16CATR-ND",
      "mouser": "576-SMF4L16CA"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T00:51:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "18-SMF4L16CATR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "576-SMF4L16CA",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A1",
        "type": "passive",
        "description": "Bi-directional TVS terminal (no polarity; no cathode band) with 16 V reverse stand-off, 17.80-19.70 V breakdown at 1 mA, and 26.0 V maximum clamping at 15.4 A peak pulse current."
      },
      {
        "number": "2",
        "name": "A2",
        "type": "passive",
        "description": "Second bi-directional TVS terminal (interchangeable with the other terminal), which clamps transients of either polarity to 26.0 V maximum at 15.4 A with 1 µA maximum leakage at 16 V."
      }
    ],
    "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: The datasheet prints no pin numbers or pin names for SOD-123FL. It only shows a functional diagram (; SMF4L16CA is the bi-directional (CA) variant per the electrical table, so neither terminal is a cath",
          "1/2 pins cited to the wrong page (name found elsewhere): ['1:A1@p2']"
        ],
        "pages_sent": 6,
        "cost_usd": 0.0736,
        "at": "2026-10-27T00:50:56"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/59e645d82073d2db697975a783dd24db.pdf",
        "pages": 6,
        "sha256": "7971ab636790fc84",
        "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": "smf4l16ca.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": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "smf4l16ca-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": "99c7ccbe0c69a0cf0de921f243fd51bad487129be4761b6b66703696bde9c95f",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}