main
Ray btc750n: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) 8b129dd 1mo ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "btc750n",
  "title": "BTC750N",
  "brief": "BORN Gas Discharge Tube Arresters (GDT), 1812. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "circuit protection",
    "btc750n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BTC750N",
    "manufacturer": "BORN",
    "package": "1812",
    "pin_count": 2,
    "category": "Circuit Protection",
    "subcategory": "Gas Discharge Tube Arresters (GDT)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912810202316801",
    "parts": {
      "symbol": "btc750n.kicad_sym",
      "footprint": "btc750n.kicad_mod",
      "model_3d": "btc750n-etched.glb",
      "model_3d_plain": "btc750n.glb",
      "model_3d_step": "btc750n-etched.step",
      "model_3d_step_plain": "btc750n.step",
      "lbr": "btc750n.lbr"
    },
    "distributor_links": {
      "lcsc": "C600779"
    },
    "pins": [
      {
        "number": "1",
        "name": "A1",
        "type": "passive",
        "description": "Gas-tube anode terminal 1; symmetric with terminal 2; DC spark-over voltage 75 V ±30%, max impulse spark-over 600 V at 1 kV/µs, impulse discharge current 2.0 kA (8/20 µs), insulation resistance ≥1 GΩ at 25 V DC, capacitance <1 pF at 1 MHz."
      },
      {
        "number": "2",
        "name": "A2",
        "type": "passive",
        "description": "Gas-tube anode terminal 2; symmetric with terminal 1; DC spark-over voltage 75 V ±30%, max impulse spark-over 600 V at 1 kV/µs, impulse discharge current 2.0 kA (8/20 µs), impulse withstanding voltage 4 kV (10/700 µs)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-sonnet-4-6",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-4-7",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: No pin numbers are printed anywhere in the datasheet for this 2-terminal GDT. Pin 1 / Pin 2 assignme",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 4,
        "cost_usd": 0.1377,
        "at": "2026-09-22T03:28:17"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912810202316801",
        "pages": 4,
        "sha256": "2d7d15d8fda51ced",
        "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": "btc750n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.5,
          3.2,
          0.6
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1efc89b1825fb585a1cc77954655b8e0db16d3de91237adf42ce79142e58826d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "btc750n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.5,
          3.2,
          0.6
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b492804b702e251ca7c16b870b59ced4b16cd1a3182d581ed2b90d96002d547e",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "BORN",
      "Package": "1812",
      "Category": "Circuit Protection",
      "Pins": "2"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "btc750n"
  ],
  "discovery_pitch": "BTC750N (BORN) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "btc750n.kicad_sym",
    "btc750n.kicad_mod",
    "btc750n.glb",
    "btc750n.step",
    "btc750n.lbr",
    "docs/hero.png",
    "docs/btc750n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T18:14:32.698Z"
}