ZM4744A

{
  "slug": "zm4744a",
  "version": "0.1.0",
  "type": "component",
  "description": "ST(Semtech) Zener Diodes, LL-41. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "diodes",
    "zm4744a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "zm4744a.kicad_sym",
    "zm4744a.kicad_mod",
    "zm4744a.glb",
    "zm4744a.step",
    "zm4744a.lbr",
    "docs/hero.png",
    "docs/zm4744a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "zm4744a-hero.glb",
    "zm4744a-hero.overlay.json"
  ],
  "component": {
    "mpn": "ZM4744A",
    "manufacturer": "ST(Semtech)",
    "package": "LL-41",
    "pin_count": 2,
    "category": "Diodes",
    "subcategory": "Zener Diodes",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/33f7d4554ec7413399f3a2abfacc9f5e.pdf",
    "parts": {
      "symbol": "zm4744a.kicad_sym",
      "footprint": "zm4744a.kicad_mod",
      "model_3d": "zm4744a-hero.glb",
      "model_3d_step": "zm4744a.step",
      "lbr": "zm4744a.lbr",
      "model_3d_plain": "zm4744a.glb"
    },
    "distributor_links": {
      "lcsc": "C41253",
      "digikey": "6709-ZM4744A-ND",
      "mouser": "821-ZM4744A"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T05:09:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "6709-ZM4744A-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "821-ZM4744A",
        "status": "found",
        "lifecycle": "Part Number Change"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode."
      }
    ],
    "provenance": {
      "extractor": "extract_pins",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins",
        "primary_model": "cathode-band convention",
        "primary_mode": "convention",
        "consensus_model": null,
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 3,
        "cost_usd": 0.0009,
        "at": "2026-10-21T05:02:12"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/33f7d4554ec7413399f3a2abfacc9f5e.pdf",
        "pages": 3,
        "sha256": "ff41c4dbf24547f7",
        "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"
    },
    "models_3d": [
      {
        "file": "zm4744a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.8,
          2.2,
          2.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3b1fa81e2e3ea0ef2e0ddbeb3f62b354a14174610250e6069a5076959a63f835",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}