LS1205EFD33

{
  "slug": "ls1205efd33",
  "version": "0.1.0",
  "type": "component",
  "description": "Littelfuse Surge Protection Devices (SPDs), DFN-10(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "circuit protection",
    "ls1205efd33",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ls1205efd33.kicad_sym",
    "ls1205efd33.kicad_mod",
    "ls1205efd33.glb",
    "ls1205efd33.step",
    "ls1205efd33.lbr",
    "docs/hero.png",
    "docs/ls1205efd33-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ls1205efd33-hero.glb",
    "ls1205efd33-hero.overlay.json",
    "ls1205efd33-etched.glb"
  ],
  "component": {
    "mpn": "LS1205EFD33",
    "manufacturer": "Littelfuse",
    "package": "DFN-10(3x3)",
    "pin_count": 11,
    "category": "Circuit Protection",
    "subcategory": "Surge Protection Devices (SPDs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/60adac62fbe06a4f36d7a0154096e4ed.pdf",
    "parts": {
      "symbol": "ls1205efd33.kicad_sym",
      "footprint": "ls1205efd33.kicad_mod",
      "model_3d": "ls1205efd33-hero.glb",
      "model_3d_plain": "ls1205efd33-etched.glb",
      "model_3d_step": "ls1205efd33-etched.step",
      "model_3d_step_plain": "ls1205efd33.step",
      "lbr": "ls1205efd33.lbr"
    },
    "distributor_links": {
      "lcsc": "C6217730",
      "digikey": "18-LS1205EFD33TR-ND",
      "mouser": "576-LS1205EFD33"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T17:47:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "18-LS1205EFD33TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "576-LS1205EFD33",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "power_in",
        "description": "Power input pin; the datasheet gives the input voltage range as 2.7 V to 18 V."
      },
      {
        "number": "2",
        "name": "IN",
        "type": "power_in",
        "description": "Power input pin; the datasheet gives the input voltage range as 2.7 V to 18 V."
      },
      {
        "number": "3",
        "name": "IN",
        "type": "power_in",
        "description": "Power input pin; the datasheet gives the input voltage range as 2.7 V to 18 V."
      },
      {
        "number": "4",
        "name": "FAULT\\",
        "type": "output",
        "description": "LS1205EF only; open-drain fault indicator that asserts low for input under-voltage, input over-voltage, output short and thermal shutdown, with output low voltage of 0.5 V max at 1 mA sink."
      },
      {
        "number": "5",
        "name": "ILIM",
        "type": "passive",
        "description": "Current limit program pin; connect a resistor to ground to set the current limit, programmable from 1 A to 5 A."
      },
      {
        "number": "6",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start time program pin; connect a capacitor to ground to program the output slew rate (leaving it floating gives a fixed soft-start of about 1.7 ms typical)."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Enable pin with 1.29 V rising turn-on and 1.19 V falling turn-off thresholds; pull above the ON threshold to enable the IC and below the OFF threshold to disable it."
      },
      {
        "number": "8",
        "name": "OUT",
        "type": "power_out",
        "description": "Power output pin, connected to IN through the internal 25 mΩ protection FET."
      },
      {
        "number": "9",
        "name": "OUT",
        "type": "power_out",
        "description": "Power output pin, connected to IN through the internal 25 mΩ protection FET."
      },
      {
        "number": "10",
        "name": "OUT",
        "type": "power_out",
        "description": "Power output pin, connected to IN through the internal 25 mΩ protection FET."
      },
      {
        "number": "11",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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: Pin 4 is VCP on the LS1205EV and FAULT\\ on the LS1205EF. The LS1205EFD33 (marking 1205EF, DFN3x3_10L; The exposed pad is printed as EP in the pin table, not as a numbered pin. It is listed as EP with th; Pin descriptions for IN, OUT and GND are brief in the datasheet; the limits added are only those the",
          "exposed pad 11 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0518,
        "at": "2026-10-30T17:47:26"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/60adac62fbe06a4f36d7a0154096e4ed.pdf",
        "pages": 10,
        "sha256": "377e453a7b81c70b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 11,
        "described": 11,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ls1205efd33.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          2.98,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "738e2eb45860c11759f8e4f44ab26932b7c15e4d5d6c8c9ac22ae866a3e38711",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ls1205efd33-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          2.98,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7b3cd607e94aa2821e8440f3ce0de10898d6eea557711c1f9ab84aad2109ea0d",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}