SMF190CA

{
  "schema_version": 1,
  "type": "component",
  "slug": "smf190ca",
  "title": "SMF190CA",
  "brief": "DOWO TVS, SOD-123. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "circuit protection",
    "smf190ca",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SMF190CA",
    "manufacturer": "DOWO",
    "package": "SOD-123",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "TVS",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/4c505136aef24a189b409ff36d39f281.pdf",
    "parts": {
      "symbol": "smf190ca.kicad_sym",
      "footprint": "smf190ca.kicad_mod",
      "model_3d": "smf190ca-hero.glb",
      "model_3d_plain": "smf190ca-etched.glb",
      "model_3d_step": "smf190ca-etched.step",
      "model_3d_step_plain": "smf190ca.step",
      "lbr": "smf190ca.lbr"
    },
    "distributor_links": {
      "lcsc": "C284107",
      "digikey": "4878-SMF190CATR-ND",
      "mouser": "637-SMF190CA"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T16:09:28Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "4878-SMF190CATR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "637-SMF190CA",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode."
      }
    ],
    "provenance": {
      "extractor": "extract_pins",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins",
        "primary_model": "cathode-band convention",
        "primary_mode": "convention",
        "consensus_model": null,
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 3,
        "cost_usd": 0.0004,
        "at": "2026-10-28T16:09:10"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/4c505136aef24a189b409ff36d39f281.pdf",
        "pages": 3,
        "sha256": "955c1bcf40145d8a",
        "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": "smf190ca.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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "132323445e3d1f9231e81c083cd88a33cd204dd8b96063bb2ed1f3ab4470c7e7",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "smf190ca-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,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c71d3ff904d427b0d0fbd76291423509e8aebe1fbd2c5435c200d03e0a1f7631",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "DOWO",
      "Package": "SOD-123",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "955c1bcf40145d8a3d2abfa129a64eef748f55a7222e93e03574c8ce5758a134",
      "rows": [
        {
          "name": "Breakdown voltage",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": 211,
          "typ": null,
          "max": 232,
          "conditions": "@IT 1 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum reverse leakage current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "@VRWM",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Working peak reverse voltage",
          "symbol": "VRWM",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": 190,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum reverse surge current",
          "symbol": "IPP",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 0.65,
          "conditions": "Table A, 10/1000us waveform",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum clamping voltage",
          "symbol": "VC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 308,
          "conditions": "@IPP",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Peak pulse power dissipation",
          "symbol": "PPP",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "10/1000us waveform",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating junction and storage temperature range",
          "symbol": "TJ, TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "on infinite heatsink at TL = 75 °C",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "smf190ca"
  ],
  "discovery_pitch": "SMF190CA (DOWO) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "smf190ca.kicad_sym",
    "smf190ca.kicad_mod",
    "smf190ca.glb",
    "smf190ca.step",
    "smf190ca.lbr",
    "docs/hero.png",
    "docs/smf190ca-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "smf190ca-hero.glb",
    "smf190ca-hero.overlay.json",
    "smf190ca-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}