main
Ray Set visibility: public 679bb5e 5h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "1smb5926b",
  "title": "1SMB5926B",
  "brief": "YFW Zener Diodes, DO-214AA(SMB). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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    "manufacturer": "YFW",
    "package": "DO-214AA(SMB)",
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    "category": "Diodes",
    "subcategory": "Zener Diodes",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0cf9a69c0287ee257f84444f87319c92.pdf",
    "parts": {
      "symbol": "1smb5926b.kicad_sym",
      "footprint": "1smb5926b.kicad_mod",
      "model_3d": "1smb5926b-hero.glb",
      "model_3d_plain": "1smb5926b-etched.glb",
      "model_3d_step": "1smb5926b-etched.step",
      "model_3d_step_plain": "1smb5926b.step",
      "lbr": "1smb5926b.lbr"
    },
    "distributor_links": {
      "lcsc": "C713630"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:16:52Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Cathode",
        "type": "passive",
        "description": "Cathode of the zener diode; for 1SMB5926B the nominal zener voltage is 11 V (10.45 V to 11.55 V) at IZT = 34.1 mA, with 3 W maximum power dissipation."
      },
      {
        "number": "2",
        "name": "Anode",
        "type": "passive",
        "description": "Anode of the zener diode; forward voltage is 1.5 V maximum at IF = 200 mA."
      }
    ],
    "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": [],
        "pages_sent": 4,
        "cost_usd": 0.0422,
        "at": "2026-10-22T22:16:39"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/0cf9a69c0287ee257f84444f87319c92.pdf",
        "pages": 4,
        "sha256": "79c71a65b5def1bb",
        "source_tier": "lcsc"
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      "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"
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    "models_3d": [
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        "file": "1smb5926b.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.3,
          3.55,
          2.15
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "029466277d91e9f5492556be93e46611049e07115c7913880c547afa96058ed4",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "1smb5926b-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "cdeb26569b1db544716cb27847b67b253fd522d85dad13646a0218e1d11c7e58",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "YFW",
      "Package": "DO-214AA(SMB)",
      "Category": "Diodes",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "79c71a65b5def1bb12333061503710b52d1de814285a79b5e4fc1b8a5cf95077",
      "rows": [
        {
          "name": "Zener Voltage",
          "symbol": "Vz",
          "kind": "electrical",
          "unit": "V",
          "min": 10.45,
          "typ": 11,
          "max": 11.55,
          "conditions": "@ IZT, Ta=25°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Zener Test Current",
          "symbol": "IZT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 34.1,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Zener Impedance",
          "symbol": "ZZT",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 5.5,
          "conditions": "@ IZT",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Zener Impedance",
          "symbol": "ZZK",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 550,
          "conditions": "@ IZK = 0.25 mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reverse Leakage Current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "@ VR = 8.4 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum DC Zener Current",
          "symbol": "IZM",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 136,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Forward Voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "@ IF = 200 mA(DC), all types",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "TL=75°C, zero lead length, Cu-Pad 5mm x 5mm",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Derating above 75°C",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW/°C",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "derate above 75°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Maximum Steady State Power Dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 550,
          "conditions": "TA=25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Derating above 25°C",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW/°C",
          "min": null,
          "typ": null,
          "max": 4.4,
          "conditions": "derate above 25°C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature Range",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction to ambient thermal resistance",
          "symbol": "RthJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 226,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction to lead thermal resistance",
          "symbol": "RthJL",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "1smb5926b"
  ],
  "discovery_pitch": "1SMB5926B (YFW) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
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    "1smb5926b.kicad_mod",
    "1smb5926b.glb",
    "1smb5926b.step",
    "1smb5926b.lbr",
    "docs/hero.png",
    "docs/1smb5926b-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "1smb5926b-hero.glb",
    "1smb5926b-hero.overlay.json",
    "1smb5926b-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}