SMAJ18A

{
  "slug": "smaj18a",
  "version": "0.1.0",
  "type": "component",
  "description": "hongjiacheng ESD And Surge Protection (TVS/ESD), DO-214AC(SMA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "circuit protection",
    "smaj18a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "smaj18a.kicad_sym",
    "smaj18a.kicad_mod",
    "smaj18a.glb",
    "smaj18a.step",
    "smaj18a.lbr",
    "docs/hero.png",
    "docs/smaj18a-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "smaj18a-hero.glb",
    "smaj18a-hero.overlay.json",
    "smaj18a-etched.glb"
  ],
  "component": {
    "mpn": "SMAJ18A",
    "manufacturer": "hongjiacheng",
    "package": "DO-214AC(SMA)",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8786200048271077376",
    "parts": {
      "symbol": "smaj18a.kicad_sym",
      "footprint": "smaj18a.kicad_mod",
      "model_3d": "smaj18a-hero.glb",
      "model_3d_plain": "smaj18a-etched.glb",
      "model_3d_step": "smaj18a-etched.step",
      "model_3d_step_plain": "smaj18a.step",
      "lbr": "smaj18a.lbr"
    },
    "distributor_links": {
      "lcsc": "C19077538",
      "digikey": "SMAJ18ALFTR-ND",
      "mouser": "821-SMAJ18AM2G"
    },
    "distributor_check": {
      "checked_at": "2026-10-12T19:29:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "SMAJ18ALFTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "821-SMAJ18AM2G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "K",
        "type": "passive",
        "description": "Cathode terminal of the unidirectional SMAJ18A, marked by the cathode band on the package, and connected to the protected line (VRWM 18V, VBR 20 to 22.1V at 1mA, VC 29.2V at 13.7A IPP)."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode terminal of the unidirectional SMAJ18A, the end opposite the cathode band, and normally connected to ground (400W peak pulse power at 10/1000µs)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet prints no pin numbers for the SMA package. The package drawing (page 2) only marks the",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 5,
        "cost_usd": 0.093,
        "at": "2026-10-12T19:28:43"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8786200048271077376",
        "pages": 5,
        "sha256": "3ff5a7b8618e9ea1",
        "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": [
      {
        "file": "smaj18a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          2.7,
          2.22
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1cfddd4e3b1bf22b8fc6ee3258c2aade882ed7b85b528e23b9db42437775a1db",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "smaj18a-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          2.7,
          2.22
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cba3330526f949b5fb15918ca3176e3ed6a314f5abe926d57b517fb39fa9ef1a",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}