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Ray Set visibility: public fb3e5f6 5h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "1sma4751-r3g",
  "title": "1SMA4751 R3G",
  "brief": "Taiwan Semiconductor(Taiwan Semicon) Zener Diodes, SMA(DO-214AC). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "mpn": "1SMA4751 R3G",
    "manufacturer": "Taiwan Semiconductor(Taiwan Semicon)",
    "package": "SMA(DO-214AC)",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/d40b00c2232719d9a41d90f99ab1045d.pdf",
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      "lbr": "1sma4751-r3g.lbr"
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    "distributor_links": {
      "lcsc": "C485034",
      "digikey": "1SMA4751R3GTR-ND",
      "mouser": "821-1SMA4751R3G"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T09:23:16Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "1SMA4751R3GTR-ND",
        "status": "found",
        "lifecycle": "Discontinued at DigiKey"
      },
      "mouser": {
        "pn": "821-1SMA4751R3G",
        "status": "found",
        "lifecycle": "Part Number Change"
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    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode, marked by the cathode band; for the 1SMA4751 (marking 751A) it is the zener voltage node with nominal Vz of 30 V at IZT of 8.5 mA, ZZT of 40 Ω and IR of 1 µA at VR of 22.8 V."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode, the terminal opposite the cathode band; it is the reference side of the 30 V nominal zener (1SMA4751) with a 1 W rated device."
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "pages_sent": 6,
        "cost_usd": 0.0652,
        "at": "2026-10-31T09:22:56"
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      "datasheet": {
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        "pages": 6,
        "sha256": "4542bca42e99dada",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    "viewers": {
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        "role": "plain",
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        "units": "mm",
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        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1cfddd4e3b1bf22b8fc6ee3258c2aade882ed7b85b528e23b9db42437775a1db",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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    "package_dims": {
      "package_code": "DO-214AC (SMA)",
      "source_page": 5,
      "D": {
        "nom_mm": 2.56,
        "range_mm": [
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      },
      "E1": {
        "nom_mm": 4.33,
        "range_mm": [
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      "E": {
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        "range_mm": [
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        ]
      },
      "A": {
        "nom_mm": 2.245,
        "range_mm": [
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          2.5
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "1sma4751-r3g.step",
        "verdict": "PASS",
        "reasons": [
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        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Taiwan Semiconductor(Taiwan Semicon)",
      "Package": "SMA(DO-214AC)",
      "Category": "Diodes",
      "Pins": "2"
    },
    "appearance": {
      "contacts": {
        "quote": "Terminal: Matte tin plated leads, solderable per JESD22-B102 Meet JESD 201 class 2 whisker test",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "4542bca42e99dada29e431ace4e2f9c2e772a5502acf7a8b847af599eece6a58"
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    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4542bca42e99dada29e431ace4e2f9c2e772a5502acf7a8b847af599eece6a58",
      "rows": [
        {
          "name": "Zener voltage tolerance",
          "symbol": "Vz",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "standard tolerance on nominal zener voltage",
          "source_page": 2,
          "source": "datasheet"
        },
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          "name": "Nominal zener voltage",
          "symbol": "Vz",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "@ IZT",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Zener test current",
          "symbol": "IZT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 8.5,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Zener impedance",
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          "max": 40,
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          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Zener impedance (knee)",
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          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "@ IZK = 0.25 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Leakage current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "@ VR = 22.8 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Surge current (non-repetitive)",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "1/2 square wave, 1/120 s, superimposed on IZT",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature range",
          "symbol": "TJ",
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          "unit": "°C",
          "min": -55,
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          "conditions": "",
          "source_page": 1,
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        },
        {
          "name": "Storage temperature range",
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "1SMA4751 R3G (Taiwan Semiconductor(Taiwan Semicon)) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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