FCX491TA

{
  "schema_version": 1,
  "type": "component",
  "slug": "fcx491ta",
  "title": "FCX491TA",
  "brief": "Diodes Incorporated Bipolar (BJT), SOT-89. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "transistors-thyristors",
    "fcx491ta"
  ],
  "component": {
    "mpn": "FCX491TA",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-89",
    "pin_count": 3,
    "category": "Transistors/Thyristors",
    "subcategory": "Bipolar (BJT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586193920275992576",
    "parts": {
      "symbol": "fcx491ta.kicad_sym",
      "footprint": "fcx491ta.kicad_mod",
      "model_3d": "fcx491ta-etched.glb",
      "model_3d_plain": "fcx491ta.glb",
      "model_3d_step": "fcx491ta-etched.step",
      "model_3d_step_plain": "fcx491ta.step",
      "lbr": "fcx491ta.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "B",
        "type": "input",
        "description": "Base terminal of the NPN transistor. Drive current into the base to turn the device on; VBE(on) ≈ 0.83 V typ, VBE(sat) ≈ 0.965 V typ at IC = 1 A, IB = 100 mA. Emitter-base breakdown VEBO = 7 V min."
      },
      {
        "number": "2",
        "name": "C",
        "type": "passive",
        "description": "Collector terminal of the NPN transistor; also bonded to the SOT89 exposed back-side heat-slug tab. Rated VCEO = 60 V, VCBO = 80 V, IC = 1 A continuous / ICM = 2 A peak. Tab acts as the primary thermal path (RθJL = 22 °C/W)."
      },
      {
        "number": "3",
        "name": "E",
        "type": "passive",
        "description": "Emitter terminal of the NPN transistor. Reference terminal for VBE and VCE; VCE(sat) ≈ 160 mV typ at IC = 1 A, IB = 100 mA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586193920275992576",
        "pages": 7,
        "sha256": "52c218b9396374d4",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "fcx491ta.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "fcx491ta-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "45dce07ef0db86e3d9ea584be73ddc5dfbceafedb068b238eab8abed8428d00f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "SOT-89",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    }
  },
  "variants": [
    {
      "mpn": "FCX491TA",
      "kind": "packaging"
    },
    {
      "mpn": "FCX491TAQTA",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "fcx491ta"
  ],
  "discovery_pitch": "FCX491TA (Diodes Incorporated) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "fcx491ta.kicad_sym",
    "fcx491ta.kicad_mod",
    "fcx491ta.glb",
    "fcx491ta.step",
    "fcx491ta.lbr",
    "docs/hero.png",
    "docs/fcx491ta-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T20:32:26.054Z"
}