main
Ray Set visibility: public 7a87b85 23d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "fs4953",
  "title": "FS4953",
  "brief": "FOSAN MOSFETs, SOP-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",
    "fs4953",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "FS4953",
    "manufacturer": "FOSAN",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Transistors/Thyristors",
    "subcategory": "MOSFETs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757317790703194112",
    "parts": {
      "symbol": "fs4953.kicad_sym",
      "footprint": "fs4953.kicad_mod",
      "model_3d": "fs4953-hero.glb",
      "model_3d_plain": "fs4953-etched.glb",
      "model_3d_step": "fs4953-etched.step",
      "model_3d_step_plain": "fs4953.step",
      "lbr": "fs4953.lbr"
    },
    "distributor_links": {
      "lcsc": "C5441147"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T20:02:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "S2",
        "type": "passive",
        "description": "Source of P-channel MOSFET 2 (pin-1 corner, bottom-left in the schematic view); VDS/BVDSS rating is -30 V."
      },
      {
        "number": "2",
        "name": "G2",
        "type": "input",
        "description": "Gate of P-channel MOSFET 2; VGS absolute maximum is ±20 V and threshold is -1 V to -2.3 V at ID = -250 uA."
      },
      {
        "number": "3",
        "name": "S1",
        "type": "passive",
        "description": "Source of P-channel MOSFET 1; continuous drain current is -4.9 A at TA = 25°C."
      },
      {
        "number": "4",
        "name": "G1",
        "type": "input",
        "description": "Gate of P-channel MOSFET 1; VGS absolute maximum is ±20 V and threshold is -1 V to -2.3 V at ID = -250 uA."
      },
      {
        "number": "5",
        "name": "D1",
        "type": "passive",
        "description": "Drain of P-channel MOSFET 1, shorted internally to pin 6; pulsed drain current is -20 A."
      },
      {
        "number": "6",
        "name": "D1",
        "type": "passive",
        "description": "Drain of P-channel MOSFET 1, shorted internally to pin 5; RDS(ON) is 36 mΩ typ at VGS = -10 V."
      },
      {
        "number": "7",
        "name": "D2",
        "type": "passive",
        "description": "Drain of P-channel MOSFET 2, shorted internally to pin 8; pulsed drain current is -20 A."
      },
      {
        "number": "8",
        "name": "D2",
        "type": "passive",
        "description": "Drain of P-channel MOSFET 2, shorted internally to pin 7; RDS(ON) is 36 mΩ typ at VGS = -10 V."
      }
    ],
    "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 has no pin-number table. Pin numbers were inferred from the internal schematic on page",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 5,
        "cost_usd": 0.2473,
        "at": "2026-10-17T20:00:44"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757317790703194112",
        "pages": 5,
        "sha256": "0da5d750ab635602",
        "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": "fs4953.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": "fs4953-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": "b3d0bc726afee3748426627d34227f0191f8d5ddd50caee8cc80a3aecf7e7f48",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "FOSAN",
      "Package": "SOP-8",
      "Category": "Transistors/Thyristors",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0da5d750ab635602e94944fcbf45c4d8887e47d277e0b53c255f7eccc704a9fa",
      "rows": [
        {
          "name": "Drain-Source Voltage",
          "symbol": "BVDSS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -30,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Gate-Source Voltage",
          "symbol": "VGS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Drain Current (continuous)",
          "symbol": "ID",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": -4.9,
          "typ": null,
          "max": null,
          "conditions": "TA = 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Drain Current (pulsed)",
          "symbol": "IDM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": -20,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Total Device Dissipation",
          "symbol": "PTOT",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "at TA = 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Total Device Dissipation",
          "symbol": "PTOT",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "at TA = 100°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction-Ambient",
          "symbol": "RΘJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": null,
          "max": 105,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Avalanche Energy Single Pulse",
          "symbol": "EAS",
          "kind": "absolute_maximum",
          "unit": "mJ",
          "min": null,
          "typ": null,
          "max": 15,
          "conditions": "single pulse",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction/Storage Temperature",
          "symbol": "TJ,Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Drain-Source Breakdown Voltage",
          "symbol": "BVDSS",
          "kind": "electrical",
          "unit": "V",
          "min": -30,
          "typ": null,
          "max": null,
          "conditions": "ID = -250uA, VGS=0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Gate Threshold Voltage",
          "symbol": "VGS(th)",
          "kind": "electrical",
          "unit": "V",
          "min": -1,
          "typ": -1.5,
          "max": -2.3,
          "conditions": "ID = -250uA, VGS = VDS",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Zero Gate Voltage Drain Current",
          "symbol": "IDSS",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": -1,
          "conditions": "VGS=0V, VDS= -24V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Gate Body Leakage",
          "symbol": "IGSS",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "VGS=+20V, VDS=0V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Static Drain-Source On-State Resistance",
          "symbol": "RDS(ON)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 36,
          "max": 50,
          "conditions": "ID= -4.9A, VGS= -10V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Static Drain-Source On-State Resistance",
          "symbol": "RDS(ON)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 45,
          "max": 65,
          "conditions": "ID= -3A, VGS= -4.5V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Diode Forward Voltage Drop",
          "symbol": "VSD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": -0.8,
          "max": -1.3,
          "conditions": "ISD= -1.7A, VGS=0V",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "fs4953"
  ],
  "discovery_pitch": "FS4953 (FOSAN) 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",
    "fs4953.kicad_sym",
    "fs4953.kicad_mod",
    "fs4953.glb",
    "fs4953.step",
    "fs4953.lbr",
    "docs/hero.png",
    "docs/fs4953-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "fs4953-hero.glb",
    "fs4953-hero.overlay.json",
    "fs4953-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}