This is a great connector for anyone doing RF work, when an SMA connector is required. It hugs the edge of a standard 0.063" thick PCB and 'launches' off of the edge. Adafruit like these for their ease of soldering and low profile. Mates with any SMA plug, they also have an SMA to RP-SMA in case your antenna is RP-SMA
You can find an Eagle footprint for this part in the Adafruit Eagle Library, it's called SMA_EDGELAUNCH
- Impedance: 50 ohm
- Diameter of Jack: 6.1mm / .24"
- Width of Plug: 6.4mm / .25"
- Total Length of Connector: 13.5mm / 0.53"
- Weight: 2g