BZW50-39

{
  "schema_version": 1,
  "type": "component",
  "slug": "bzw50-39",
  "title": "BZW50-39",
  "brief": "STMicroelectronics TVS, R6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "tvs-fuse-board level protection",
    "bzw50-39"
  ],
  "component": {
    "mpn": "BZW50-39",
    "manufacturer": "STMicroelectronics",
    "package": "R6",
    "pin_count": 2,
    "category": "TVS/Fuse/Board Level Protection",
    "subcategory": "TVS",
    "datasheet": "https://www.st.com/resource/en/datasheet/bzw50-39.pdf",
    "parts": {
      "symbol": "bzw50-39.kicad_sym",
      "footprint": "bzw50-39.kicad_mod",
      "model_3d": "bzw50-39-etched.glb",
      "model_3d_plain": "bzw50-39.glb",
      "model_3d_step": "bzw50-39-etched.step",
      "model_3d_step_plain": "bzw50-39.step",
      "lbr": "bzw50-39.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "A",
        "type": "passive",
        "description": "Anode terminal of the unidirectional TVS diode. In the R6 axial package this is one of the two leads; the cathode is identified by the cathode bar marking on the body."
      },
      {
        "number": "2",
        "name": "K",
        "type": "passive",
        "description": "Cathode terminal of the unidirectional TVS diode. Identified by the printed cathode bar on the body (unidirectional devices only, per Figure 14 marking layout)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.st.com/resource/en/datasheet/bzw50-39.pdf",
        "pages": 12,
        "sha256": "e556076e948a7910",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bzw50-39.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          15.24,
          2.51,
          8.3
        ],
        "zmin_mm": -3.0,
        "centre_offset_mm": 0.005,
        "footprint_binding": "identity",
        "sha256": "12a2e5618299d1deff9c927f6987afd39ee36f2270671fbd66d6ba09f97ea92a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bzw50-39-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          15.24,
          2.51,
          8.3
        ],
        "zmin_mm": -3.0,
        "centre_offset_mm": 0.005,
        "footprint_binding": "identity",
        "sha256": "d4e83648e8e764527b305f842148569c7467259ff2bcaf41c8ed177c1f0ed6af",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "R6",
      "Category": "TVS/Fuse/Board Level Protection",
      "Pins": "2"
    }
  },
  "variants": [
    {
      "mpn": "BZW50-39 (unidirectional)",
      "kind": "packaging"
    },
    {
      "mpn": "BZW50-39B (bidirectional)",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bzw50-39"
  ],
  "discovery_pitch": "BZW50-39 (STMicroelectronics) 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",
    "bzw50-39.kicad_sym",
    "bzw50-39.kicad_mod",
    "bzw50-39.glb",
    "bzw50-39.step",
    "bzw50-39.lbr",
    "docs/hero.png",
    "docs/bzw50-39-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T18:20:41.738Z"
}