main
Ray Set visibility: public 652ef13 5h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "1sma4747a",
  "title": "1SMA4747A",
  "brief": "hongjiacheng 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",
    "1sma4747a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "1SMA4747A",
    "manufacturer": "hongjiacheng",
    "package": "DO-214AC(SMA)",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a72ce228d184d0b9907d60e0119da8a3.pdf",
    "parts": {
      "symbol": "1sma4747a.kicad_sym",
      "footprint": "1sma4747a.kicad_mod",
      "model_3d": "1sma4747a-hero.glb",
      "model_3d_plain": "1sma4747a-etched.glb",
      "model_3d_step": "1sma4747a-etched.step",
      "model_3d_step_plain": "1sma4747a.step",
      "lbr": "1sma4747a.lbr"
    },
    "distributor_links": {
      "lcsc": "C19077484",
      "digikey": "5399-1SMA4747ATR-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T05:20:16Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "5399-1SMA4747ATR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode, the end marked by the cathode line on the body; the zener (reverse) voltage VZ of 19.0 to 21.2 V (20 V nominal) at IZT=47... see review note"
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode, the end opposite the cathode line; forward voltage VF is 1.5 V max at IF=200 mA."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The only pin information is a generic function diagram showing '1 XXXX 2' with no cathode/anode labe; Pin names are given only as the printed numbers 1 and 2 because the datasheet does not name them. Th"
        ],
        "pages_sent": 4,
        "cost_usd": 0.0249,
        "at": "2026-10-21T05:17:09"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a72ce228d184d0b9907d60e0119da8a3.pdf",
        "pages": 4,
        "sha256": "a029b6256b4d07a8",
        "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": "1sma4747a.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": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "1sma4747a-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": "faa1b9ced0b6693b002bac7e32f2a559cfae84533e745f67db61e3c82f3d0891",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "hongjiacheng",
      "Package": "DO-214AC(SMA)",
      "Category": "Diodes",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "a029b6256b4d07a89d62c6bbba43187942035aec4d41aec14bbdc52c7321d108",
      "rows": [
        {
          "name": "Nominal zener voltage (min)",
          "symbol": "VZ",
          "kind": "tolerance",
          "unit": "V",
          "min": 19,
          "typ": null,
          "max": null,
          "conditions": "IZT = 13 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Nominal zener voltage",
          "symbol": "VZ",
          "kind": "tolerance",
          "unit": "V",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "IZT = 13 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Nominal zener voltage (max)",
          "symbol": "VZ",
          "kind": "tolerance",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 21.2,
          "conditions": "IZT = 13 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum zener impedance",
          "symbol": "ZZT",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 22,
          "conditions": "@ IZT = 13 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reverse leakage current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "@ VR = 15 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Admissible zener current",
          "symbol": "IZM",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 47,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "Tc=75℃",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Forward voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "IF=200mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Typical thermal resistance, junction to ambient",
          "symbol": "RθJ-A",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 250,
          "max": null,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "1sma4747a"
  ],
  "discovery_pitch": "1SMA4747A (hongjiacheng) 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",
    "1sma4747a.kicad_sym",
    "1sma4747a.kicad_mod",
    "1sma4747a.glb",
    "1sma4747a.step",
    "1sma4747a.lbr",
    "docs/hero.png",
    "docs/1sma4747a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "1sma4747a-hero.glb",
    "1sma4747a-hero.overlay.json",
    "1sma4747a-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}