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Ray Set visibility: public c96a97a 10d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "sz1sma5937bt3g",
  "title": "SZ1SMA5937BT3G",
  "brief": "onsemi Zener Diodes, 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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    "extractor-text"
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    "package": "SMA",
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    "category": "Diodes",
    "subcategory": "Zener Diodes",
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      "lbr": "sz1sma5937bt3g.lbr"
    },
    "distributor_links": {
      "lcsc": "C896075",
      "digikey": "488-SZ1SMA5937BT3GTR-ND",
      "mouser": "863-SZ1SMA5937BT3G"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T15:18:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "488-SZ1SMA5937BT3GTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "863-SZ1SMA5937BT3G",
        "status": "found"
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    },
    "pins": [
      {
        "number": "1",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode terminal, identified by the molded polarity notch or cathode band on the SMA package (Style 1 pin 1, labeled CATHODE (POLARITY BAND))."
      },
      {
        "number": "2",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode terminal, the opposite terminal to the cathode band on the SMA package (Style 1 pin 2, labeled ANODE)."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "pages_sent": 6,
        "cost_usd": 0.0343,
        "at": "2026-10-16T15:18:16"
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        "pages": 6,
        "sha256": "f462474d29a69587",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 2,
        "described": 2,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "file": "sz1sma5937bt3g.step",
        "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": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sz1sma5937bt3g-etched.step",
        "role": "eda",
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        "zmin_mm": 0,
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        "sha256": "10536b554e9741c26e3f9d9fc9eb2c30a20a287d7d14572d6ae3ad23ef41898f",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SMA",
      "Category": "Diodes",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "f462474d29a69587fdbe3de8e4ffc050caff58ec5ab8f836e07c74602b64992d",
      "rows": [
        {
          "name": "Zener voltage (nominal VZ, ±5% tolerance band)",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "V",
          "min": 31.35,
          "typ": 33,
          "max": 34.65,
          "conditions": "@ IZT = 11.4 mA; VZ limits guaranteed at thermal equilibrium (Note 4)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Zener voltage tolerance",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "Type number designation indicates ±5% tolerance (Note 3)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Zener impedance",
          "symbol": "ZZT",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 33,
          "conditions": "@ IZT = 11.4 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum Zener impedance",
          "symbol": "ZZK",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 800,
          "conditions": "@ IZK = 0.25 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum DC Zener current",
          "symbol": "IZM",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 45,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Forward voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "@ IF = 200 mA, for all types",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1.5,
          "conditions": "TL = 75°C, measured zero lead length (Note 1)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "DC power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "TA = 25°C (Note 2)",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance, junction-to-lead",
          "symbol": "RθJL",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance, junction-to-ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 250,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating and storage temperature range",
          "symbol": "TJ, Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_pitch": "SZ1SMA5937BT3G (onsemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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