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Ray Set visibility: public 3013f95 14h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "sml4750a-e3",
  "title": "SML4750A-E3",
  "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",
  "tags": [
    "component",
    "diodes",
    "sml4750a-e3",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SML4750A-E3",
    "manufacturer": "Vishay Intertech",
    "package": "DO-214AC(SMA)",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/4f86eb99157c708b3fcd1e6679dc44ec.pdf",
    "parts": {
      "symbol": "sml4750a-e3.kicad_sym",
      "footprint": "sml4750a-e3.kicad_mod",
      "model_3d": "sml4750a-e3-hero.glb",
      "model_3d_plain": "sml4750a-e3-etched.glb",
      "model_3d_step": "sml4750a-e3-etched.step",
      "model_3d_step_plain": "sml4750a-e3.step",
      "lbr": "sml4750a-e3.lbr"
    },
    "distributor_links": {
      "lcsc": "C3741299"
    },
    "distributor_check": {
      "checked_at": "2026-10-24T00:08:10Z",
      "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 terminal, identified by the cathode band on the DO-214AC (SMA) body; the SML4750 is a 27 V nominal Zener with 9.5 mA test current and a ±5 % tolerance for the A suffix."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode terminal at the end opposite the cathode band; Ptot is 1000 mW at TL = 75 °C and Tj is 150 °C max."
      }
    ],
    "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 prints no pin numbers or pin names. It shows only a cathode band on the DO-214AC outli; The datasheet lists SML4728 to SML4764A, and the MPN SML4750A-E3 is not printed as an ordering code."
        ],
        "pages_sent": 5,
        "cost_usd": 0.0603,
        "at": "2026-10-24T00:07:51"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/4f86eb99157c708b3fcd1e6679dc44ec.pdf",
        "pages": 5,
        "sha256": "15b3fea9a6e65941",
        "source_tier": "mfr"
      },
      "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": "sml4750a-e3.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": "2026-10-24",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sml4750a-e3-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": "c7ddd8423874075489d307c0dda72919d71bac3729f0678355457c23b5d44d9e",
        "checked": "2026-10-24",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Vishay Intertech",
      "Package": "DO-214AC(SMA)",
      "Category": "Diodes",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "15b3fea9a6e65941a5eaba6afa3a1ff837b4828e8605af1d6cd45a82711a4b53",
      "rows": [
        {
          "name": "Zener voltage tolerance (suffix A)",
          "symbol": "VZ",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Suffix A",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Reverse current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "at VR = 20.6 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Dynamic resistance",
          "symbol": "ZZ",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "at IZT1 = 9.5 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Knee dynamic resistance",
          "symbol": "ZZK",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 750,
          "conditions": "at IZT2 = 0.25 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Surge current",
          "symbol": "IRM",
          "kind": "electrical",
          "unit": "mApk",
          "min": null,
          "typ": null,
          "max": 170,
          "conditions": "Non-repetitive, 8.3 ms pulse width square wave or equivalent sine-wave superimposed on IZT",
          "source_page": 2,
          "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": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Nominal zener voltage",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 27,
          "max": null,
          "conditions": "at IZT1 = 9.5 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Zener test current",
          "symbol": "IZT1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 9.5,
          "max": null,
          "conditions": "Test current for VZ and ZZ",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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  ],
  "discovery_triggers": [
    "sml4750a-e3"
  ],
  "discovery_pitch": "SML4750A-E3 (Vishay Intertech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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  "visibility": {
    "public": true
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}