CMZ20

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  "schema_version": 1,
  "type": "component",
  "slug": "cmz20",
  "title": "CMZ20",
  "brief": "TOSHIBA Zener Diodes, SOD-128. 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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    "diodes",
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  "component": {
    "mpn": "CMZ20",
    "manufacturer": "TOSHIBA",
    "package": "SOD-128",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5b4f75bb3aa7b0ff4fcd3d53d9a70a21.pdf",
    "parts": {
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      "model_3d_step_plain": "cmz20.step",
      "lbr": "cmz20.lbr"
    },
    "distributor_links": {
      "lcsc": "C7232928"
    },
    "distributor_check": {
      "checked_at": "2026-11-02T19:40:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Anode",
        "type": "passive",
        "description": "Anode of the Zener diode; the CMZ20 has a Zener voltage of 18.0 to 22.0 V (20 V typ.) at the specified test current."
      },
      {
        "number": "2",
        "name": "Cathode",
        "type": "passive",
        "description": "Cathode of the Zener diode, marked on the package with a cathode mark; power dissipation is rated at 2 W (Ta = 30°C, ceramic board)."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet names the package only as Toshiba 'M-FLAT' (TOSHIBA 3-4E1S; JEDEC and JEITA are blank)"
        ],
        "pages_sent": 5,
        "cost_usd": 0.083,
        "at": "2026-11-02T19:40:13"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/5b4f75bb3aa7b0ff4fcd3d53d9a70a21.pdf",
        "pages": 5,
        "sha256": "692899659da6c4de",
        "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"
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    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.7,
          2.5,
          1.01
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c98f6c45e31c085ad7293f96c19813d749b20d47245b9c5c01f816003df24d8c",
        "checked": "2026-11-02",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cmz20-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "sha256": "6d49b8504da8a15d7542e0a04319be4cd912afb449b6b457bcea19fdc647fe50",
        "checked": "2026-11-02",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TOSHIBA",
      "Package": "SOD-128",
      "Category": "Diodes",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "692899659da6c4dec31fe1f090ef23607b5668cc65982ab5bf572aa8595accb8",
      "rows": [
        {
          "name": "Zener voltage",
          "symbol": "VZ",
          "kind": "electrical",
          "unit": "V",
          "min": 18,
          "typ": 20,
          "max": 22,
          "conditions": "Ta = 25°C, IZ = 10 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Zener impedance",
          "symbol": "rd",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "Ta = 25°C, IZ = 10 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature coefficient of Zener voltage",
          "symbol": "αT",
          "kind": "temperature_coefficient",
          "unit": "mV/°C",
          "min": null,
          "typ": 16,
          "max": 26,
          "conditions": "Ta = 25°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Forward voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.2,
          "conditions": "Ta = 25°C, IF = 0.2 A",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reverse current",
          "symbol": "IR",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "Ta = 25°C, VR = 14 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "P",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Ta = 30°C, device mounted on ceramic board 50 mm × 50 mm, land 2 mm × 2 mm, 0.64 mm thick",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Recommended junction temperature",
          "symbol": "Tj",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "Recommended Tj of below 120°C (handling precaution)",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
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  "discovery_triggers": [
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  "discovery_pitch": "CMZ20 (TOSHIBA) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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}