BFG540

{
  "schema_version": 1,
  "type": "component",
  "slug": "bfg540",
  "title": "BFG540",
  "brief": "Slkor SLKORMICRO Elec RF Amplifiers, SOT-143-4. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "rf and wireless",
    "bfg540"
  ],
  "component": {
    "mpn": "BFG540",
    "manufacturer": "Slkor SLKORMICRO Elec",
    "package": "SOT-143-4",
    "pin_count": 4,
    "category": "RF And Wireless",
    "subcategory": "RF Amplifiers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917853520715776",
    "parts": {
      "symbol": "bfg540.kicad_sym",
      "footprint": "bfg540.kicad_mod",
      "model_3d": "bfg540-etched.glb",
      "model_3d_plain": "bfg540.glb",
      "model_3d_step": "bfg540-etched.step",
      "model_3d_step_plain": "bfg540.step",
      "lbr": "bfg540.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "C",
        "type": "passive",
        "description": "Collector of NPN transistor. Wide collector lead per SOT143B package. Max IC=120mA, BVCEO=15V, BVCBO=20V."
      },
      {
        "number": "2",
        "name": "B",
        "type": "passive",
        "description": "Base of NPN transistor. BVEBO=2.5V. Drives high-gain low-noise RF amplifier operation up to fT=9GHz."
      },
      {
        "number": "3",
        "name": "E",
        "type": "passive",
        "description": "Emitter of NPN transistor. Shared with pin 4 (dual emitter leads for improved grounding/thermal performance in SOT143B)."
      },
      {
        "number": "4",
        "name": "E",
        "type": "passive",
        "description": "Second emitter of NPN transistor, tied internally to pin 3. Dual emitter leads reduce parasitic inductance for microwave LNA use."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917853520715776",
        "pages": 5,
        "sha256": "5b47e88954dfd847",
        "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"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Slkor SLKORMICRO Elec",
      "Package": "SOT-143-4",
      "Category": "RF And Wireless",
      "Pins": "4"
    }
  },
  "variants": [
    {
      "mpn": "BFG540",
      "kind": "packaging"
    },
    {
      "mpn": "BFG540/X",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bfg540"
  ],
  "discovery_pitch": "BFG540 (Slkor SLKORMICRO Elec) 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",
    "bfg540.kicad_sym",
    "bfg540.kicad_mod",
    "bfg540.glb",
    "bfg540.step",
    "bfg540.lbr",
    "docs/hero.png",
    "docs/bfg540-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:44:33.437Z"
}