{
  "type": "connector",
  "specs": [
    {"name": "pin_count", "description": "Number of pins/contacts", "required": true},
    {"name": "voltage_rating_v", "description": "Maximum rated voltage", "unit": "V"},
    {"name": "current_rating_a", "description": "Maximum current per contact", "unit": "A"}
  ],
  "subtypes": {
    "connector.header": {
      "description": "Pin header connector",
      "extra_specs": [
        {"name": "pitch_mm", "description": "Pin pitch (center-to-center spacing)", "unit": "mm"},
        {"name": "rows", "description": "Number of rows"},
        {"name": "positions_per_row", "description": "Number of positions per row"}
      ]
    },
    "connector.usb": {
      "description": "USB connector",
      "extra_specs": [
        {"name": "usb_standard", "description": "USB standard version (2.0, 3.0, 3.1, Type-C)"}
      ]
    },
    "connector.fpc": {
      "description": "FPC/FFC connector",
      "extra_specs": [
        {"name": "pitch_mm", "description": "Contact pitch (center-to-center spacing)", "unit": "mm"}
      ]
    }
  }
}