main
Ray Set visibility: public f05e2e3 1d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "1-5smc400a",
  "title": "1.5SMC400A",
  "brief": "DOWO TVS, SMC. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "circuit protection",
    "1.5smc400a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "1.5SMC400A",
    "manufacturer": "DOWO",
    "package": "SMC",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "TVS",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/684e6bee8012afd7f1870c14aafd5d80.pdf",
    "parts": {
      "symbol": "1-5smc400a.kicad_sym",
      "footprint": "1-5smc400a.kicad_mod",
      "model_3d": "1-5smc400a-hero.glb",
      "model_3d_plain": "1-5smc400a-etched.glb",
      "model_3d_step": "1-5smc400a-etched.step",
      "model_3d_step_plain": "1-5smc400a.step",
      "lbr": "1-5smc400a.lbr"
    },
    "distributor_links": {
      "lcsc": "C350840"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T09:34:02Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode (color band end) of the unidirectional TVS, standoff VRWM 342 V, breakdown VBR 380 to 420 V at IT = 1 mA, max clamping 548 V at IPP 2.72 A, 1500 W peak pulse power (10/1000 μs)."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode of the unidirectional TVS, forward voltage VF max 5.0 V at 100 A (VBR > 201 V) and peak forward surge current IFSM 200 A (8.3 ms half sine-wave)."
      }
    ],
    "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 gives no pin numbers or pin table for the SMC package. It only says the color band den; 1.5SMC400A is the unidirectional 'A' type, so the pins are polarized. The bidirectional 1.5SMC400CA "
        ],
        "pages_sent": 3,
        "cost_usd": 0.0573,
        "at": "2026-10-27T09:33:36"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/684e6bee8012afd7f1870c14aafd5d80.pdf",
        "pages": 3,
        "sha256": "7cbdff82a3e6d14d",
        "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": [
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        "file": "1-5smc400a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          8,
          5.9,
          2.31
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "30dab4c2e22239b7e3694a4d45304e04255c6b70a79d28e9c34c6072ba647991",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "1-5smc400a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6932079778f42c1abad140503594e0a87d6629b186510b80aaa9545a82f607a3",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "DOWO",
      "Package": "SMC",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "7cbdff82a3e6d14dd980c88efa33c5a24e423bcd730e3e2c61ccd563ea49b1e8",
      "rows": [
        {
          "name": "Breakdown Voltage",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": 380,
          "typ": null,
          "max": 420,
          "conditions": "@IT = 1 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Reverse Leakage",
          "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": "electrical",
          "unit": "V",
          "min": null,
          "typ": 342,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Reverse Surge Current",
          "symbol": "IPP",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 2.72,
          "conditions": "10/1000μs waveform",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Clamping Voltage",
          "symbol": "VC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 548,
          "conditions": "@IPP",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Peak power dissipation",
          "symbol": "PPP",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1500,
          "conditions": "10/1000μs waveform, TA=25℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation on infinite heatsink",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 6.5,
          "conditions": "TL = 75 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Peak forward surge current",
          "symbol": "IFSM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "8.3 ms single half sine-wave, unidirectional only",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum instantaneous forward voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "at 100 A, unidirectional only; VF<5.0V for VBR>201V",
          "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"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
    "1.5smc400a"
  ],
  "discovery_pitch": "1.5SMC400A (DOWO) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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  "visibility": {
    "public": true
  }
}