BZT55B4V3

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  "type": "component",
  "slug": "bzt55b4v3",
  "title": "BZT55B4V3",
  "brief": "AnBon Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "mpn": "BZT55B4V3",
    "manufacturer": "AnBon",
    "package": "SOD-123",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
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    "distributor_links": {
      "lcsc": "C541655"
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      "checked_at": "2026-10-18T07:37:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
        "pn": null,
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    },
    "pins": [
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        "number": "1",
        "name": "Cathode",
        "type": "passive",
        "description": "Cathode of the BZT55B Zener diode, identified on the package by the cathode band (page 4 pinning: Pin1 cathode; page 1: polarity indicated by cathode band)."
      },
      {
        "number": "2",
        "name": "Anode",
        "type": "passive",
        "description": "Anode of the BZT55B Zener diode, the terminal opposite the cathode band (page 4 pinning: Pin2 anode)."
      }
    ],
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "cost_usd": 0.0217,
        "at": "2026-10-18T07:36:04"
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        "pages": 4,
        "sha256": "848c1cbc10591389",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
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        "refuses_to_fabricate": true
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "132323445e3d1f9231e81c083cd88a33cd204dd8b96063bb2ed1f3ab4470c7e7",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "AnBon",
      "Package": "SOD-123",
      "Category": "Diodes",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "848c1cbc1059138903c19e4399e9385694e581908347f304c4b9da083447f8b4",
      "rows": [
        {
          "name": "Zener voltage",
          "symbol": "VZT",
          "kind": "electrical",
          "unit": "V",
          "min": 4.21,
          "typ": 4.3,
          "max": 4.39,
          "conditions": "at IZT = 5 mA; VZT tested with pulses (20 ms)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Dynamic impedance",
          "symbol": "ZZT",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 130,
          "conditions": "at IZT = 5 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reverse current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "at VR = 1 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Forward voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.9,
          "conditions": "@IF = 10mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Total power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "at TA=25°C, mounted on FR-5 board, note1",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
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          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Operating junction temperature range",
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          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance, junction to ambient, note1",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 305,
          "max": null,
          "conditions": "note1: device mounted on ceramic PCB; 7.6mm x 9.4mm x 0.87mm with pad area 25mm2",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance, junction to case, note1",
          "symbol": "RθCJ",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "note1: device mounted on ceramic PCB; 7.6mm x 9.4mm x 0.87mm with pad area 25mm2",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "BZT55B4V3 (AnBon) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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