I have come across these rather big connectors on Altera trasciever boards in particular. I was wondering what is special about them.
This is an example of SMA plug and jack connectors:
Most often, the plug type (left) is used on cables and the jack type (right) is used on instrument panels or pcbs.
SMA connectors are:
- Small relative to connectors that preceded them, like BNC and N types.
- Suitable for use at frequencies up to 18 GHz.
- Widely used in industry for those frequencies.
- Quite robust against vibration, repeated insertions, and other abuse (when a proper torque wrenche is used)
- Available at reasonable prices (e.g. on the order of $5 per connector)
- Available on a wide range of coaxial cable types.