CD143A-SR05-HXY

{
  "slug": "cd143a-sr05-hxy",
  "version": "0.1.0",
  "type": "component",
  "description": "HXY MOSFET ESD And Surge Protection (TVS/ESD), SOT-143. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "circuit protection",
    "cd143a-sr05-hxy",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd143a-sr05-hxy.kicad_sym",
    "cd143a-sr05-hxy.kicad_mod",
    "cd143a-sr05-hxy.glb",
    "cd143a-sr05-hxy.step",
    "cd143a-sr05-hxy.lbr",
    "docs/hero.png",
    "docs/cd143a-sr05-hxy-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd143a-sr05-hxy-hero.glb",
    "cd143a-sr05-hxy-hero.overlay.json",
    "cd143a-sr05-hxy-etched.glb"
  ],
  "component": {
    "mpn": "CD143A-SR05-HXY",
    "manufacturer": "HXY MOSFET",
    "package": "SOT-143",
    "pin_count": 4,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9891ae7b1ce3ea0166c109eb7bcda547.pdf",
    "parts": {
      "symbol": "cd143a-sr05-hxy.kicad_sym",
      "footprint": "cd143a-sr05-hxy.kicad_mod",
      "model_3d": "cd143a-sr05-hxy-hero.glb",
      "model_3d_plain": "cd143a-sr05-hxy-etched.glb",
      "model_3d_step": "cd143a-sr05-hxy-etched.step",
      "model_3d_step_plain": "cd143a-sr05-hxy.step",
      "lbr": "cd143a-sr05-hxy.lbr"
    },
    "distributor_links": {
      "lcsc": "C42416640"
    },
    "distributor_check": {
      "checked_at": "2026-11-04T12:55:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Negative rail of the diode array, connected to system ground; positive ESD current is steered to it through an ESD diode and the zener diode."
      },
      {
        "number": "2",
        "name": "IO1",
        "type": "passive",
        "description": "ESD-protected I/O channel 1 with a pair of steering diodes to the rails, 0.4 pF typical capacitance to GND at VR=0V, 1MHz."
      },
      {
        "number": "3",
        "name": "IO2",
        "type": "passive",
        "description": "ESD-protected I/O channel 2 with a pair of steering diodes to the rails, 0.4 pF typical capacitance to GND at VR=0V, 1MHz."
      },
      {
        "number": "4",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply rail of the array, with the integrated zener diode to GND (VRWM 5 V, VBR 6 V min at 1 mA); positive ESD voltage is clamped to the zener voltage."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet only shows pin numbers 1-4 in the circuit diagram and never prints pin names. Pins 2 a",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 4,
        "cost_usd": 0.1724,
        "at": "2026-11-04T12:55:17"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/9891ae7b1ce3ea0166c109eb7bcda547.pdf",
        "pages": 4,
        "sha256": "28d90faae93de172",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "cd143a-sr05-hxy.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.3,
          2.9,
          1.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b35b433c0dc71ac416a9c731e744d2e0610f82ebe97275830f0e17cdcbe44512",
        "checked": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd143a-sr05-hxy-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.3,
          2.9,
          1.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "9d629e0d3d04f0fb4446d9566bcf98c1b4696225c5bb68b395d19dcf07ee2352",
        "checked": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "SOT-143",
      "source_page": 3,
      "D": {
        "nom_mm": 2.9,
        "range_mm": [
          2.8,
          3.04
        ]
      },
      "E1": {
        "nom_mm": 1.3,
        "range_mm": [
          1.2,
          1.4
        ]
      },
      "E": {
        "nom_mm": 2.37,
        "range_mm": [
          2.1,
          2.64
        ]
      },
      "e": {
        "nom_mm": 1.92,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.01,
        "range_mm": [
          0.8,
          1.22
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "cd143a-sr05-hxy.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}