main
Ray Set visibility: public 62f8e7e
{
  "schema_version": 1,
  "type": "component",
  "slug": "bzx55b20-ay-10001",
  "title": "BZX55B20_AY_10001",
  "brief": "PANJIT International Zener Diodes, DO-35. 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": "BZX55B20_AY_10001",
    "manufacturer": "PANJIT International",
    "package": "DO-35",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e34e30537dc762e6fd3574d31124964e.pdf",
    "parts": {
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      "lbr": "bzx55b20-ay-10001.lbr",
      "model_3d_plain": "bzx55b20-ay-10001.glb"
    },
    "distributor_links": {
      "lcsc": "C263160"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T18:38:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode of the BZX55B20 zener diode, which conducts in reverse breakdown at Vz 19.60 to 20.40 V (Iz = 5 mA) within the 500 mW power dissipation rating."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode of the BZX55B20 zener diode, with forward voltage of 1 V max at IF = 100 mA."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet text says 'Polarity: See Diagram Below', but the polarity diagram is not in the extrac; The MPN suffix '_AY_10001' is not defined in the datasheet. The datasheet only describes the DO-35 p"
        ],
        "pages_sent": 3,
        "cost_usd": 0.085,
        "at": "2026-10-31T18:38:37"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e34e30537dc762e6fd3574d31124964e.pdf",
        "pages": 3,
        "sha256": "035820bc76cb93d5",
        "source_tier": "lcsc"
      },
      "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"
    },
    "models_3d": [
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        "file": "bzx55b20-ay-10001.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          2.02,
          5.01
        ],
        "zmin_mm": -2.5,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9704292191fcb13b3dfc88c1e572df18313ac20023bb230486c878d8dddfdb54",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "DO-35",
      "source_page": 1,
      "D": {
        "nom_mm": 4.191,
        "range_mm": [
          null,
          4.191
        ]
      },
      "E1": {
        "nom_mm": 2.007,
        "range_mm": [
          null,
          2.007
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "bzx55b20-ay-10001.step",
        "verdict": "SKIP",
        "reasons": [
          "the datasheet dimensions give no height or body size to compare"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "PANJIT International",
      "Package": "DO-35",
      "Category": "Diodes",
      "Pins": "2"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "035820bc76cb93d5358e1f49ed98c62bd2640c5160f9edf41973b0622813af23",
      "rows": [
        {
          "name": "Zener Voltage",
          "symbol": "Vz",
          "kind": "electrical",
          "unit": "V",
          "min": 19.6,
          "typ": null,
          "max": 20.4,
          "conditions": "Iz = 5.0 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Forward Voltage (table test current)",
          "symbol": "Vf",
          "kind": "electrical",
          "unit": "V",
          "min": 0.2,
          "typ": null,
          "max": 1,
          "conditions": "If = 100 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Reverse Current",
          "symbol": "Ir",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "Vr = 15.0 V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Dynamic Impedance",
          "symbol": "Zzt",
          "kind": "electrical",
          "unit": "Ohms",
          "min": null,
          "typ": null,
          "max": 55,
          "conditions": "Izt = 5.0 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Knee Impedance",
          "symbol": "Zzk",
          "kind": "electrical",
          "unit": "Ohms",
          "min": null,
          "typ": null,
          "max": 220,
          "conditions": "Izk = 1.0 mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Forward Voltage",
          "symbol": "VF",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "IF = 100mA",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance Junction to Ambient Air",
          "symbol": "RthA",
          "kind": "thermal",
          "unit": "K/mW",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "Leads at 10 mm from case kept at ambient temperature",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "PTOT",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "Tamb = 25 °C, leads at 8mm from case kept at ambient temperature",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 175,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TS",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 175,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
    "bzx55b20_ay_10001"
  ],
  "discovery_pitch": "BZX55B20_AY_10001 (PANJIT International) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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  "visibility": {
    "public": true
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}