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Ray Set visibility: public 5192fd8 18h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "sml4745ahe3-a",
  "title": "SML4745AHE3_A",
  "brief": "Vishay Intertech 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",
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  "component": {
    "mpn": "SML4745AHE3_A",
    "manufacturer": "Vishay Intertech",
    "package": "DO-214AC(SMA)",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0b2f7dbf34f2c0a34baaf5c5370cb29f.pdf",
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      "model_3d_step_plain": "sml4745ahe3-a.step",
      "lbr": "sml4745ahe3-a.lbr"
    },
    "distributor_links": {
      "lcsc": "C3731868"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T21:25:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 800 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode, the terminal marked by the cathode band on the SMA (DO-214AC) package; positive for reverse Zener regulation (SML4745A: VZ 16 V nom., 15.5 mA test current)."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode, the terminal opposite the cathode band on the SMA (DO-214AC) package; this is the single-diode circuit configuration."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "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 or an anode label. It only shows a 'Cathode Band' on the SM; The ordering table lists SML4738HE3_A/I and /H as the AEC-Q101 variants for the SML4738 to SML4764A "
        ],
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        "cost_usd": 0.07,
        "at": "2026-10-23T21:24:31"
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        "pages": 6,
        "sha256": "89a70fe3cc688ebd",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "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": "1cfddd4e3b1bf22b8fc6ee3258c2aade882ed7b85b528e23b9db42437775a1db",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sml4745ahe3-a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
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        "sha256": "aad3f1932103f2289b85645daa1ae6c39bae2b69b2f258f8bb18b9f3333402c3",
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        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Vishay Intertech",
      "Package": "DO-214AC(SMA)",
      "Category": "Diodes",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "89a70fe3cc688ebd07ab7d2b0c30c866c7ca6e4f6fc9a1ba22e56dd1629d9a06",
      "rows": [
        {
          "name": "Zener voltage tolerance (suffix A)",
          "symbol": "VZ",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Standard tolerance ±10 %, suffix A ±5 %",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Reverse current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "at VR = 12.2 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Dynamic resistance",
          "symbol": "ZZ",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 16,
          "conditions": "at IZT1",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Dynamic resistance (knee)",
          "symbol": "ZZK",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 700,
          "conditions": "at IZT2",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Surge current",
          "symbol": "IRM",
          "kind": "electrical",
          "unit": "mApk",
          "min": null,
          "typ": null,
          "max": 285,
          "conditions": "Non-repetitive, 8.3 ms pulse width square wave or equivalent sine-wave superimposed on IZT per JEDEC method",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "Ptot",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "TL = 75 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "Tamb = 25 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "Tamb = 25 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Zener voltage nominal",
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          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 16,
          "max": null,
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        {
          "name": "Test current 1",
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          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 15.5,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Test current 2",
          "symbol": "IZT2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.25,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "SML4745AHE3_A (Vishay Intertech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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