SML4742A

{
  "schema_version": 1,
  "type": "component",
  "slug": "sml4742a",
  "title": "SML4742A",
  "brief": "JUXING Zener Diodes, DO-214AC(SMA). 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",
    "sml4742a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SML4742A",
    "manufacturer": "JUXING",
    "package": "DO-214AC(SMA)",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603097563159404544",
    "parts": {
      "symbol": "sml4742a.kicad_sym",
      "footprint": "sml4742a.kicad_mod",
      "model_3d": "sml4742a-hero.glb",
      "model_3d_plain": "sml4742a-etched.glb",
      "model_3d_step": "sml4742a-etched.step",
      "model_3d_step_plain": "sml4742a.step",
      "lbr": "sml4742a.lbr"
    },
    "distributor_links": {
      "lcsc": "C5365413"
    },
    "distributor_check": {
      "checked_at": "2026-10-13T15:08:53Z",
      "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 laser band on the package; the SML4742 is a 12 V nominal Zener (21 mA test current, ZZT 9 Ω, IR 5 uA at 9.1 V, suffix A = ±5%)."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode, the terminal opposite the cathode band; the device is rated at 1.0 W power dissipation, with a maximum junction temperature of 150 °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": "vision",
        "consensus_model": "claude-opus-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 laser band marks the cathode. Pin 1 = cat; The SML4742A suffix A (±5% tolerance) is described in the features list. The electrical table lists ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 2,
        "cost_usd": 0.1255,
        "at": "2026-10-13T15:08:31"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603097563159404544",
        "pages": 2,
        "sha256": "7151ff554ae57bd2",
        "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": "sml4742a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          2.7,
          2.22
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1cfddd4e3b1bf22b8fc6ee3258c2aade882ed7b85b528e23b9db42437775a1db",
        "checked": "2026-10-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sml4742a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          2.7,
          2.22
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a6ba0ff9b585e3c314ef45308a758066f462e1a5360c41032083083846973ccb",
        "checked": "2026-10-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "JUXING",
      "Package": "DO-214AC(SMA)",
      "Category": "Diodes",
      "Pins": "2"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sml4742a"
  ],
  "discovery_pitch": "SML4742A (JUXING) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sml4742a.kicad_sym",
    "sml4742a.kicad_mod",
    "sml4742a.glb",
    "sml4742a.step",
    "sml4742a.lbr",
    "docs/hero.png",
    "docs/sml4742a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sml4742a-hero.glb",
    "sml4742a-hero.overlay.json",
    "sml4742a-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}