main
Ray Set visibility: public c63e899 23d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "sa40a",
  "title": "SA40A",
  "brief": "Littelfuse ESD And Surge Protection (TVS/ESD), DO-204AC(DO-15). 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",
    "sa40a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SA40A",
    "manufacturer": "Littelfuse",
    "package": "DO-204AC(DO-15)",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588943442487074816",
    "parts": {
      "symbol": "sa40a.kicad_sym",
      "footprint": "sa40a.kicad_mod",
      "model_3d": "sa40a-hero.glb",
      "model_3d_step": "sa40a.step",
      "lbr": "sa40a.lbr",
      "model_3d_plain": "sa40a.glb"
    },
    "distributor_links": {
      "lcsc": "C1974176",
      "digikey": "SA40ATR-ND",
      "mouser": "576-SA40A"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T07:16:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "SA40ATR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "576-SA40A",
        "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": 0.0019,
        "at": "2026-10-16T07:16:36"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588943442487074816",
        "pages": 6,
        "sha256": "c9b8ae16db3781ba",
        "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": "sa40a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          13.6,
          3.62,
          6.61
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "830b6b0897c8be8055aa6c51f81fa67e5f932b1bf037644261cdba627d18a8b1",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Littelfuse",
      "Package": "DO-204AC(DO-15)",
      "Category": "Circuit Protection",
      "Pins": "2"
    },
    "appearance": {
      "contacts": {
        "quote": "• Matte tin lead–free plated • Halogen free and RoHS",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "c9b8ae16db3781ba4e4a0e0edbfe333e8f2ea79aabd23b643516ed2c046d25cd"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "c9b8ae16db3781ba4e4a0e0edbfe333e8f2ea79aabd23b643516ed2c046d25cd",
      "rows": [
        {
          "name": "Peak Pulse Power Dissipation by 10/1000us Test Waveform (Fig.2) (Note 1)",
          "symbol": "PPPM",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "10/1000us test waveform (Fig.2), Note 1",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Steady State Power Dissipation on Infinite Heat Sink at TL",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "TL = 75 C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Peak Forward Surge Current, 8.3ms Single Half Sine Wave Unidirectional Only (Note 2)",
          "symbol": "IFSM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "8.3ms single half sine wave, unidirectional only, Note 2",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum Instantaneous Forward Voltage at 35A for Unidirectional Only",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 3.5,
          "conditions": "at 35A, unidirectional only",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction and Storage Temperature Range",
          "symbol": "TJ, TSTG",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -65,
          "typ": null,
          "max": 175,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Breakdown Voltage VBR @ IT (min)",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": 44.4,
          "typ": null,
          "max": null,
          "conditions": "@ IT = 1 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Breakdown Voltage VBR @ IT (max)",
          "symbol": "VBR",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 49.1,
          "conditions": "@ IT = 1 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Clamping Voltage VC @ IPP",
          "symbol": "VC",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 64.5,
          "conditions": "@ IPP = 7.9 A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Peak Pulse Current Ipp",
          "symbol": "Ipp",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 7.9,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Reverse Leakage IR @ VR",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "@ VR",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "VBR Voltage Tolerance (Uni-Directional, A suffix)",
          "symbol": "VBR",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Uni-directional type code A, 5% VBR voltage tolerance",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Reverse Stand off Voltage",
          "symbol": "VR",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature Coefficient of VBR (alpha T)",
          "symbol": "aT",
          "kind": "temperature_coefficient",
          "unit": "%",
          "min": null,
          "typ": 0.1,
          "max": null,
          "conditions": "VBR @ TJ = VBR@25C x (1+aT x (TJ - 25))",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Typical Thermal Resistance Junction to Lead",
          "symbol": "RthetaJL",
          "kind": "thermal",
          "unit": "C/W",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "Junction to lead, typical",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Typical Thermal Resistance Junction to Ambient",
          "symbol": "RthetaJA",
          "kind": "thermal",
          "unit": "C/W",
          "min": null,
          "typ": 75,
          "max": null,
          "conditions": "Junction to ambient, typical",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sa40a"
  ],
  "discovery_pitch": "SA40A (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",
    "sa40a.kicad_sym",
    "sa40a.kicad_mod",
    "sa40a.glb",
    "sa40a.step",
    "sa40a.lbr",
    "docs/hero.png",
    "docs/sa40a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sa40a-hero.glb",
    "sa40a-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}