CDNBS08-SRDA3.3-4

{
  "slug": "cdnbs08-srda3-3-4",
  "version": "0.1.0",
  "type": "component",
  "description": "BOURNS ESD Protection Devices, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "circuit protection",
    "cdnbs08-srda3.3-4",
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    "extractor-text"
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  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "cdnbs08-srda3-3-4.glb",
    "cdnbs08-srda3-3-4.step",
    "cdnbs08-srda3-3-4.lbr",
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    "docs/cdnbs08-srda3-3-4-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cdnbs08-srda3-3-4-hero.glb",
    "cdnbs08-srda3-3-4-hero.overlay.json",
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  ],
  "component": {
    "mpn": "CDNBS08-SRDA3.3-4",
    "manufacturer": "BOURNS",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Circuit Protection",
    "subcategory": "ESD Protection Devices",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a099ee66c515e298f2c942d4f1b472be.pdf",
    "parts": {
      "symbol": "cdnbs08-srda3-3-4.kicad_sym",
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      "lbr": "cdnbs08-srda3-3-4.lbr"
    },
    "distributor_links": {
      "lcsc": "C1974103",
      "digikey": "CDNBS08-SRDA3.3-4TR-ND",
      "mouser": "652-CDNBS08SRDA3.3-4"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T00:56:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "CDNBS08-SRDA3.3-4TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "652-CDNBS08SRDA3.3-4",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "I/O 1",
        "type": "passive",
        "description": "Protected I/O line 1 with steering diodes to +VREF and GND, 15 pF max capacitance, ESD protection up to ±30 kV."
      },
      {
        "number": "2",
        "name": "+VREF",
        "type": "passive",
        "description": "Positive reference rail for the steering diodes; working peak voltage 3.3 V for the CDNBS08-SRDA3.3-4."
      },
      {
        "number": "3",
        "name": "+VREF",
        "type": "passive",
        "description": "Positive reference rail for the steering diodes (second +VREF pin); working peak voltage 3.3 V for the CDNBS08-SRDA3.3-4."
      },
      {
        "number": "4",
        "name": "I/O 2",
        "type": "passive",
        "description": "Protected I/O line 2 with steering diodes to +VREF and GND, 15 pF max capacitance, ESD protection up to ±30 kV."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the TVS diode array; capacitance is measured between pins 8 or 5 and the other pins."
      },
      {
        "number": "6",
        "name": "I/O 3",
        "type": "passive",
        "description": "Protected I/O line 3 with steering diodes to +VREF and GND, 15 pF max capacitance, ESD protection up to ±30 kV."
      },
      {
        "number": "7",
        "name": "I/O 4",
        "type": "passive",
        "description": "Protected I/O line 4 with steering diodes to +VREF and GND, 15 pF max capacitance, ESD protection up to ±30 kV."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the TVS diode array; capacitance is measured between pins 8 or 5 and the other pins."
      }
    ],
    "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: Datasheet does not give pin types; I/O and +VREF pins were assigned as passive because this is a TVS; The 'Measured between pins 8 or 5 to 1, 2, 3, 4, 6 and 7' note and the 15 pF figure are given for th"
        ],
        "pages_sent": 5,
        "cost_usd": 0.0734,
        "at": "2026-10-27T00:56:16"
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        "url": "https://datasheet.lcsc.com/datasheet/pdf/a099ee66c515e298f2c942d4f1b472be.pdf",
        "pages": 5,
        "sha256": "ed435f17a31db017",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "cdnbs08-srda3-3-4-etched.step",
        "role": "eda",
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "sha256": "4532a8c0f6e73ec5923ce2c28b933bfa44fa2b5f2f548b7bbe4927cd1deb0ae3",
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}