SI4554DY

{
  "schema_version": 1,
  "type": "component",
  "slug": "si4554dy",
  "title": "SI4554DY",
  "brief": "TECH PUBLIC MOSFETs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "transistors-thyristors",
    "si4554dy",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SI4554DY",
    "manufacturer": "TECH PUBLIC",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Transistors/Thyristors",
    "subcategory": "MOSFETs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590279076448935936",
    "parts": {
      "symbol": "si4554dy.kicad_sym",
      "footprint": "si4554dy.kicad_mod",
      "model_3d": "si4554dy-hero.glb",
      "model_3d_plain": "si4554dy-etched.glb",
      "model_3d_step": "si4554dy-etched.step",
      "model_3d_step_plain": "si4554dy.step",
      "lbr": "si4554dy.lbr"
    },
    "distributor_links": {
      "lcsc": "C5123918"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T14:51:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "S1",
        "type": "passive",
        "description": "Source of the N-channel MOSFET (VDS 40V, ID 8A, RDS(ON) <19mΩ at VGS=10V)."
      },
      {
        "number": "2",
        "name": "G1",
        "type": "input",
        "description": "Gate of the N-channel MOSFET (VGS ±20V max, threshold 1V min to 2.0V max at ID=250µA)."
      },
      {
        "number": "3",
        "name": "S2",
        "type": "passive",
        "description": "Source of the P-channel MOSFET (VDS -40V, ID -7A, RDS(ON) <35mΩ at VGS=-10V)."
      },
      {
        "number": "4",
        "name": "G2",
        "type": "input",
        "description": "Gate of the P-channel MOSFET (VGS ±20V max)."
      },
      {
        "number": "5",
        "name": "D2",
        "type": "passive",
        "description": "Drain of the P-channel MOSFET (VDS -40V, pulsed IDM -30A), tied to pin 6."
      },
      {
        "number": "6",
        "name": "D2",
        "type": "passive",
        "description": "Drain of the P-channel MOSFET (VDS -40V, pulsed IDM -30A), tied to pin 5."
      },
      {
        "number": "7",
        "name": "D1",
        "type": "passive",
        "description": "Drain of the N-channel MOSFET (VDS 40V, pulsed IDM 40A), tied to pin 8."
      },
      {
        "number": "8",
        "name": "D1",
        "type": "passive",
        "description": "Drain of the N-channel MOSFET (VDS 40V, pulsed IDM 40A), tied to pin 7."
      }
    ],
    "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": "vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Only the SOP-8 package is shown on page 1; I read only pages 1-2 because the pinout was on page 1, s",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 9,
        "cost_usd": 0.1249,
        "at": "2026-10-17T14:46:18"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590279076448935936",
        "pages": 9,
        "sha256": "5a27352d6325020b",
        "source_tier": "lcsc"
      },
      "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": "si4554dy.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "si4554dy-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "cf0efaf9ab23e4da17cc95c3441e79cff44f848529d25f2378462d7102e2395b",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TECH PUBLIC",
      "Package": "SOIC-8",
      "Category": "Transistors/Thyristors",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "si4554dy"
  ],
  "discovery_pitch": "SI4554DY (TECH PUBLIC) 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",
    "si4554dy.kicad_sym",
    "si4554dy.kicad_mod",
    "si4554dy.glb",
    "si4554dy.step",
    "si4554dy.lbr",
    "docs/hero.png",
    "docs/si4554dy-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "si4554dy-hero.glb",
    "si4554dy-hero.overlay.json",
    "si4554dy-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}