main
Ray Set visibility: public 89845a8 5d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "1-5smb39ca",
  "title": "1.5SMB39CA",
  "brief": "Littelfuse ESD And Surge Protection (TVS/ESD), DO-214AA(SMBJ). 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",
    "1.5smb39ca",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "1.5SMB39CA",
    "manufacturer": "Littelfuse",
    "package": "DO-214AA(SMBJ)",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8580723374651465728",
    "parts": {
      "symbol": "1-5smb39ca.kicad_sym",
      "footprint": "1-5smb39ca.kicad_mod",
      "model_3d": "1-5smb39ca-hero.glb",
      "model_3d_plain": "1-5smb39ca-etched.glb",
      "model_3d_step": "1-5smb39ca-etched.step",
      "model_3d_step_plain": "1-5smb39ca.step",
      "lbr": "1-5smb39ca.lbr"
    },
    "distributor_links": {
      "lcsc": "C3706875",
      "digikey": "18-1.5SMB39CATR-ND",
      "mouser": "576-1.5SMB39CA"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T17:31:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "18-1.5SMB39CATR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "576-1.5SMB39CA",
        "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": 6,
        "cost_usd": 0.0018,
        "at": "2026-10-15T17:31:12"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8580723374651465728",
        "pages": 6,
        "sha256": "edddb435792266f3",
        "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": "1-5smb39ca.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.3,
          3.55,
          2.15
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "029466277d91e9f5492556be93e46611049e07115c7913880c547afa96058ed4",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "1-5smb39ca-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.3,
          3.55,
          2.15
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3930053b9f9e8ca83b4f0d3a96f3455f7828bd95ece755d2a30efbbf39ec8ae4",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Littelfuse",
      "Package": "DO-214AA(SMBJ)",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "edddb435792266f3b75e08a5e73d5fbf2023c4fe8ed0f05c7ea36f734f5cd179",
      "rows": [
        {
          "name": "Breakdown voltage VBR (bidirectional 1.5SMB39CA)",
          "symbol": "VBR",
          "kind": "tolerance",
          "unit": "V",
          "min": 37.1,
          "typ": null,
          "max": 41,
          "conditions": "@ IT = 1 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum peak pulse current Ipp (10/1000µs)",
          "symbol": "Ipp",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 28.2,
          "conditions": "10/1000µs waveform",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum clamping voltage VC @ Ipp (10/1000µs)",
          "symbol": "VC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 53.9,
          "conditions": "@ Ipp (10/1000µs), Ipp = 28.2 A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum clamping voltage VC @ Ipp (8/20µs)",
          "symbol": "VC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 69.6,
          "conditions": "@ Ipp (8/20µs), Ipp = 155.1 A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum peak pulse current Ipp (8/20µs)",
          "symbol": "Ipp",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 155.1,
          "conditions": "8/20µs waveform",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum reverse leakage current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "@ VR = 33.3 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum temperature coefficient of VBR",
          "symbol": "",
          "kind": "temperature_coefficient",
          "unit": "%/C",
          "min": null,
          "typ": null,
          "max": 0.097,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Stand-off voltage VR",
          "symbol": "VR",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 33.3,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Peak pulse power dissipation PPPM",
          "symbol": "PPPM",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1500,
          "conditions": "10/1000µs waveform (Fig.2), Notes 1, 2",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation on infinite heat sink",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "at TL = 50°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 175,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Typical thermal resistance junction to lead",
          "symbol": "RθJL",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Typical thermal resistance junction to ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "1.5smb39ca"
  ],
  "discovery_pitch": "1.5SMB39CA (Littelfuse) 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",
    "1-5smb39ca.kicad_sym",
    "1-5smb39ca.kicad_mod",
    "1-5smb39ca.glb",
    "1-5smb39ca.step",
    "1-5smb39ca.lbr",
    "docs/hero.png",
    "docs/1-5smb39ca-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "1-5smb39ca-hero.glb",
    "1-5smb39ca-hero.overlay.json",
    "1-5smb39ca-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}