LT1641-1CS8#PBF

{
  "slug": "lt1641-1cs8-pbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Surge Suppressors, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "tvs-fuse-board level protection",
    "lt1641-1cs8#pbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lt1641-1cs8-pbf.kicad_sym",
    "lt1641-1cs8-pbf.kicad_mod",
    "lt1641-1cs8-pbf.glb",
    "lt1641-1cs8-pbf.step",
    "lt1641-1cs8-pbf.lbr",
    "docs/hero.png",
    "docs/lt1641-1cs8-pbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lt1641-1cs8-pbf-hero.glb",
    "lt1641-1cs8-pbf-hero.overlay.json"
  ],
  "component": {
    "mpn": "LT1641-1CS8#PBF",
    "manufacturer": "Analog Devices",
    "package": "SO-8",
    "pin_count": 8,
    "category": "TVS/Fuse/Board Level Protection",
    "subcategory": "Surge Suppressors",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/164112fc.pdf",
    "parts": {
      "symbol": "lt1641-1cs8-pbf.kicad_sym",
      "footprint": "lt1641-1cs8-pbf.kicad_mod",
      "model_3d": "lt1641-1cs8-pbf-hero.glb",
      "model_3d_step": "lt1641-1cs8-pbf.step",
      "lbr": "lt1641-1cs8-pbf.lbr",
      "model_3d_plain": "lt1641-1cs8-pbf.glb"
    },
    "distributor_links": {
      "lcsc": "C664550",
      "digikey": "LT1641-1CS8#PBF-ND",
      "mouser": "584-LT1641-1CS8#PBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T18:24:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT1641-1CS8#PBF-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT1641-1CS8#PBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "ON",
        "type": "input",
        "description": "Undervoltage lockout input: GATE is pulled low when ON falls below the 1.233V threshold and turns back on above 1.313V, and pulsing ON low resets a latched current-limit fault."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Power-good comparator input that monitors the output voltage through an external divider; PWRGD goes low below 1.233V and releases above 1.313V, and FB also sets the foldback current limit."
      },
      {
        "number": "3",
        "name": "PWRGD",
        "type": "output",
        "description": "Open-collector power-good output to GND that is pulled low when FB is below 1.233V and goes high impedance above 1.313V, with an external pull-up that can be as high as 100V."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground reference for the controller."
      },
      {
        "number": "5",
        "name": "TIMER",
        "type": "passive",
        "description": "Timing input where an external capacitor sets the maximum time in current limit; at 1.233V the GATE is pulled low, and the timing capacitor must be at least 1.5nF."
      },
      {
        "number": "6",
        "name": "GATE",
        "type": "output",
        "description": "High-side gate drive for the external N-channel MOSFET that guarantees at least 10V gate drive above 20V VCC and 4.5V between 10.8V and 20V, and is pulled to GND on faults."
      },
      {
        "number": "7",
        "name": "SENSE",
        "type": "input",
        "description": "Current-limit sense input where a resistor between VCC and SENSE regulates (VCC - VSENSE) to 47mV when FB is 0.5V or higher, falling to 12mV at FB = 0V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input for normal operation from 9V to 80V (ICC typically 2mA), with an internal undervoltage lockout that disables the chip below 8.3V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The 'TOP VIEW' text on page 2 is scrambled in extraction: the pin-number sequence '1 2 3 4 8 7 6 5' ; The ordering code LT1641-1CS8#PBF is the lead-free (#PBF) version of the LT1641-1CS8 part in the 8-l"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0627,
        "at": "2026-10-30T18:24:25"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/164112fc.pdf",
        "pages": 12,
        "sha256": "00aa5309da79d653",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lt1641-1cs8-pbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "S8",
      "source_page": 12,
      "D": {
        "nom_mm": 4.902,
        "range_mm": [
          4.801,
          5.004
        ]
      },
      "E1": {
        "nom_mm": 3.899,
        "range_mm": [
          3.81,
          3.988
        ]
      },
      "E": {
        "nom_mm": 5.994,
        "range_mm": [
          5.791,
          6.198
        ]
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.549,
        "range_mm": [
          1.346,
          1.753
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "lt1641-1cs8-pbf.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}