HER508 TB

{
  "schema_version": 1,
  "type": "component",
  "slug": "her508-tb",
  "title": "HER508 TB",
  "brief": "YFW High Effic Rectifier, DO-27. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "diodes",
    "her508 tb",
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  ],
  "component": {
    "mpn": "HER508 TB",
    "manufacturer": "YFW",
    "package": "DO-27",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "High Effic Rectifier",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/2117abb93b796ac1744287d1e5e53b9e.pdf",
    "parts": {
      "symbol": "her508-tb.kicad_sym",
      "footprint": "her508-tb.kicad_mod",
      "model_3d": "her508-tb-hero.glb",
      "model_3d_step": "her508-tb.step",
      "lbr": "her508-tb.lbr",
      "model_3d_plain": "her508-tb.glb"
    },
    "distributor_links": {
      "lcsc": "C2898515"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T21:25:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode lead, the end marked with the cathode band on the DO-201AD/DO-27 body; HER508 blocks up to 1000 V VRRM and passes 5.0 A average forward current."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode lead, the unmarked end of the DO-201AD/DO-27 axial body; HER508 has a forward current rating of 5.0 A average at Tc = 100 °C."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet prints no pin numbers or pin table. It only shows a 'Cathode Mark' on the package outl; The 'TB' suffix is not explained in the datasheet. The packing table lists only 'BOX 250/1000/1250',"
        ],
        "pages_sent": 3,
        "cost_usd": 0.0336,
        "at": "2026-10-22T21:25:43"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/2117abb93b796ac1744287d1e5e53b9e.pdf",
        "pages": 3,
        "sha256": "d1a425c5ca09d862",
        "source_tier": "lcsc"
      },
      "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": "her508-tb.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          16.14,
          5.35,
          8.34
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "aa9f03a97b19122d8c50b826e938bb3e6eac4942dae4292a7ed12e25ffe77428",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "YFW",
      "Package": "DO-27",
      "Category": "Diodes",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "d1a425c5ca09d862a20560dc8c81c4e233896ec7b239964c71268afd8e3bf46f",
      "rows": [
        {
          "name": "Maximum Repetitive Peak Reverse Voltage",
          "symbol": "VRRM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum RMS Voltage",
          "symbol": "VRMS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 700,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum DC Blocking Voltage",
          "symbol": "VDC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum Average Forward Rectified Current",
          "symbol": "IF(AV)",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "Tc = 100 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum DC Reverse Current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Ta = 25 °C, 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 °C, at rated DC blocking voltage",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating and Storage Temperature Range",
          "symbol": "Tj, Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Typical Junction Capacitance",
          "symbol": "Cj",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Typical Thermal Resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 65,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "her508 tb"
  ],
  "discovery_pitch": "HER508 TB (YFW) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
  },
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    "viewers/footprint.html",
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  "visibility": {
    "public": true
  }
}