1N4756ATA

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  "slug": "1n4756ata",
  "title": "1N4756ATA",
  "brief": "Tak Cheong Zener Diodes, DO-41. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "package": "DO-41",
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    "category": "Diodes",
    "subcategory": "Zener Diodes",
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    "distributor_links": {
      "lcsc": "C261292"
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        "status": "quota"
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      "mouser": {
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    "pins": [
      {
        "number": "1",
        "name": "Cathode",
        "type": "passive",
        "description": "Cathode terminal of the 1N4756A zener diode, identified by the polarity band on the hermetically sealed glass body, and the regulator is rated 1 W maximum steady-state dissipation at TL ≤ 50 °C with 3/8\" lead length."
      },
      {
        "number": "2",
        "name": "Anode",
        "type": "passive",
        "description": "Anode terminal of the zener diode, at the end of the body opposite the polarity band, with the device rated for operating and storage temperature of -65 to +200 °C."
      }
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          "extractor flagged: The datasheet names the two DO-41 terminals only as Cathode and Anode (polarity band marks the catho; The datasheet covers the 1N4728A through 1N4761A series in DO-41 and lists 1N4756A (nominal 47 V, Vz; The datasheet does not give a separate pin description for the anode or cathode beyond polarity mark"
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        "at": "2026-10-21T14:41:48"
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        "pages": 3,
        "sha256": "20c61d98f60a9f32",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        "zmin_mm": -2.5,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c3e23d4b276811b74eecb329bd4480209ad3dbc8cf6e6e3f2a5b542c5ca343c1",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Tak Cheong",
      "Package": "DO-41",
      "Category": "Diodes",
      "Pins": "2"
    },
    "appearance": {
      "contacts": {
        "quote": "§ Solder Hot Dip Tin (Sn) Lead Finish Specification Features:",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "tin"
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      "version": 1,
      "datasheet_sha256": "20c61d98f60a9f3299b4dacde1e8097137aad503c26120f3642b654c0338b3a8"
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    "characteristics": {
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          "name": "Zener voltage (1N4756A, ±5% type)",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "V",
          "min": 44.65,
          "typ": 47,
          "max": 49.35,
          "conditions": "@IZT = 5.5 mA; pulse test (Notes 2 & 3)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Leakage current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "@VR = 35.8 V",
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          "max": 2,
          "conditions": "@IF = 200 mA; for 30~56V types",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Zener voltage tolerance (A suffix)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Standard tolerance on nominal VZ per type-number designation",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum steady state power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "@TL≤50℃, Lead Length = 3/8”",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Power derating above 50℃",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW/℃",
          "min": null,
          "typ": 6.67,
          "max": null,
          "conditions": "Derate above 50℃, lead length 3/8”",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating and storage temperature range",
          "symbol": "TJ, Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 1,
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  "discovery_pitch": "1N4756ATA (Tak Cheong) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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