1SMB5934B

{
  "slug": "1smb5934b",
  "version": "0.1.0",
  "type": "component",
  "description": "LGE Zener Diodes, SMB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "diodes",
    "1smb5934b",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "1smb5934b.kicad_sym",
    "1smb5934b.kicad_mod",
    "1smb5934b.glb",
    "1smb5934b.step",
    "1smb5934b.lbr",
    "docs/hero.png",
    "docs/1smb5934b-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "1smb5934b-hero.glb",
    "1smb5934b-hero.overlay.json",
    "1smb5934b-etched.glb"
  ],
  "component": {
    "mpn": "1SMB5934B",
    "manufacturer": "LGE",
    "package": "SMB",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/355878a2402890111470daedc16a7f1a.pdf",
    "parts": {
      "symbol": "1smb5934b.kicad_sym",
      "footprint": "1smb5934b.kicad_mod",
      "model_3d": "1smb5934b-hero.glb",
      "model_3d_plain": "1smb5934b-etched.glb",
      "model_3d_step": "1smb5934b-etched.step",
      "model_3d_step_plain": "1smb5934b.step",
      "lbr": "1smb5934b.lbr"
    },
    "distributor_links": {
      "lcsc": "C2992891"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T11:45:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode, marked by the color band on the SMB package; the Zener (1SMB5934, VZ 24 V at IZT 15.6 mA) conducts in reverse with this pin positive."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode, the end opposite the color band on the SMB package; the Zener's forward voltage is max 1.5 V 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": [
          "extractor flagged: The datasheet does not print pin numbers; it only says the color band denotes the cathode. Pin numbe; The datasheet lists the 1SMB5934A (±10%) in its table. The 1SMB5934B (±5%) is defined only by the no"
        ],
        "pages_sent": 2,
        "cost_usd": 0.0769,
        "at": "2026-10-22T11:44:22"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/355878a2402890111470daedc16a7f1a.pdf",
        "pages": 2,
        "sha256": "23542ce852d79da7",
        "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": "1smb5934b.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": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "029466277d91e9f5492556be93e46611049e07115c7913880c547afa96058ed4",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "1smb5934b-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.3,
          3.55,
          2.15
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "a8bf53c1b2cc8cc71bdc3d9fa585530eb11142c50b560f712d3f5fd13d057ca2",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}