SD12

{
  "slug": "sd12",
  "version": "0.1.0",
  "type": "component",
  "description": "MDD Microdiode Semiconductor ESD And Surge Protection (TVS/ESD), SOD-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "circuit protection",
    "sd12",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sd12.kicad_sym",
    "sd12.kicad_mod",
    "sd12.glb",
    "sd12.step",
    "sd12.lbr",
    "docs/hero.png",
    "docs/sd12-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sd12-hero.glb",
    "sd12-hero.overlay.json",
    "sd12-etched.glb"
  ],
  "component": {
    "mpn": "SD12",
    "manufacturer": "MDD Microdiode Semiconductor",
    "package": "SOD-323",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "ESD And Surge Protection (TVS/ESD)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8565978321462202368",
    "parts": {
      "symbol": "sd12.kicad_sym",
      "footprint": "sd12.kicad_mod",
      "model_3d": "sd12-hero.glb",
      "model_3d_plain": "sd12-etched.glb",
      "model_3d_step": "sd12-etched.step",
      "model_3d_step_plain": "sd12.step",
      "lbr": "sd12.lbr"
    },
    "distributor_links": {
      "lcsc": "C502528"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T15:37:17Z",
      "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 unidirectional TVS diode (the I/O line being protected); SD12 has a 12 V working voltage (VRWM), 13.3 V minimum breakdown at 1 mA and 32 V maximum clamping voltage at 11 A."
      },
      {
        "number": "2",
        "name": "A",
        "type": "passive",
        "description": "Anode of the unidirectional TVS diode, normally tied to ground; the device is rated for ±30 kV IEC 61000-4-2 air and contact ESD and 350 W peak pulse power (8/20 µs)."
      }
    ],
    "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 circuit diagram on page 1 shows only the pin numbers 1 and 2, with the diode bar (cathode) next ; Pin types are 'passive' because a two-terminal TVS diode has no better ERC class. The datasheet does",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 4,
        "cost_usd": 0.1427,
        "at": "2026-10-23T15:36:25"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8565978321462202368",
        "pages": 4,
        "sha256": "10c3d65b4326cef2",
        "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": "sd12.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          1.25,
          1.11
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cd8619b2119cd95683a2c5e660ab4f2d4db674f696cd6f9e9756f221171a214d",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sd12-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.25,
          1.11
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e79d5338a3c45435fe759920602c8b1902ce779fa3963a1d9d29a885559d52ce",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}