GBU8M

{
  "schema_version": 1,
  "type": "component",
  "slug": "gbu8m",
  "title": "GBU8M",
  "brief": "LRC Bridge Rectifiers, GBU. 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",
    "diodes",
    "gbu8m",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "GBU8M",
    "manufacturer": "LRC",
    "package": "GBU",
    "pin_count": 4,
    "category": "Diodes",
    "subcategory": "Bridge Rectifiers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e3e8e99a6e2d2d51b66628bcb7ff33c2.pdf",
    "parts": {
      "symbol": "gbu8m.kicad_sym",
      "footprint": "gbu8m.kicad_mod",
      "model_3d": "gbu8m-hero.glb",
      "model_3d_plain": "gbu8m-etched.glb",
      "model_3d_step": "gbu8m-etched.step",
      "model_3d_step_plain": "gbu8m.step",
      "lbr": "gbu8m.lbr"
    },
    "distributor_links": {
      "lcsc": "C411157"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:06:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "+",
        "type": "passive",
        "description": "Positive DC output terminal of the bridge, leftmost lead in the circuit diagram."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "AC input terminal; the datasheet rates the bridge at VRM 1000 V for GBU8M."
      },
      {
        "number": "3",
        "name": "3",
        "type": "passive",
        "description": "AC input terminal; the datasheet rates the bridge at 8 A average forward current with heatsink at Tc=100°C."
      },
      {
        "number": "4",
        "name": "-",
        "type": "passive",
        "description": "Negative DC output terminal of the bridge, rightmost lead in the circuit diagram."
      }
    ],
    "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: Neither the circuit diagram on page 1 nor the package drawing on page 4 prints pin numbers. The term",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 4,
        "cost_usd": 0.1834,
        "at": "2026-10-22T22:06:30"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e3e8e99a6e2d2d51b66628bcb7ff33c2.pdf",
        "pages": 4,
        "sha256": "de8e51b99b84fb8c",
        "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"
    },
    "models_3d": [
      {
        "file": "gbu8m.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          22.1,
          3.4,
          36.4
        ],
        "zmin_mm": -16,
        "centre_offset_mm": 0.6,
        "footprint_binding": "identity",
        "sha256": "8031b8811f103efe801ea21c1e48def9cf6d14d909a4b82ba505562fec514beb",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "gbu8m-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": [
          22.1,
          3.4,
          36.4
        ],
        "zmin_mm": -16,
        "centre_offset_mm": 0.6,
        "footprint_binding": "identity",
        "sha256": "9f98c4a6f4535f54a7f454d8e723efee09ece5da606a4f77a14011f43d61a5c9",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "LRC",
      "Package": "GBU",
      "Category": "Diodes",
      "Pins": "4"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "de8e51b99b84fb8cdf68825297303d4182c80fe43821f5ebde7ed7bab3d912a0",
      "rows": [
        {
          "name": "Maximum repetitive voltage",
          "symbol": "VRM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "GBU8M",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum DC reverse current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "TA=25, at rated DC blocking voltage",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum DC reverse current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "TA=125, at rated DC blocking voltage",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Average rectified forward current",
          "symbol": "Io",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "60Hz sine wave, R-load with heatsink, Tc=100 (1)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Average rectified forward current",
          "symbol": "Io",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 2.5,
          "conditions": "60Hz sine wave, R-load, mounted on P.C.B. without heatsink (2)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Peak forward surge current",
          "symbol": "IFSM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "10.0 ms single half sine-wave superimposed on rated load",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum instantaneous forward voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "at 4A",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Typical thermal resistance per leg",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 21,
          "max": null,
          "conditions": "(2) unit mounted on P.C.B. without heatsink",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Typical thermal resistance per leg",
          "symbol": "RθJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 2.2,
          "max": null,
          "conditions": "(1) unit case mounted on Al plate heat-sink",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "gbu8m"
  ],
  "discovery_pitch": "GBU8M (LRC) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "gbu8m.kicad_mod",
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    "gbu8m.step",
    "gbu8m.lbr",
    "docs/hero.png",
    "docs/gbu8m-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "gbu8m-hero.glb",
    "gbu8m-hero.overlay.json",
    "gbu8m-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}