QMA was designed in the 2000s, it is a quick disconnect version of the SMA connector, they have the same internal construction.
Mechanically, the QMA connector offers a more convenient installation than SMA connector. Because of the interface mates with a snap-on instead of a threaded coupling, there is a significant time advantage. Typically, these connectors can be installed into a system 10 times faster than an SMA connector. Another benefit of eliminating the threaded coupling is the denser packaging. There's no requirement for wrench clearance so the pitch between connector can bereduced. In addition, QMA connectors can be rotated 360 degrees after they are mated which greatly improves the flexibility of installations.
Thanks to its main benefits (easy and quick to install, high density, tool-less), QMA successfully displaced SMA in telecom infrastructure equipment.
Normally QMA connectors are used in outdoor applications such as wireless communications, transmission systems, portable radio systems, air traffic control, and assemblies for mobile radio base stations. They have a high vibration and impact tolerance and can also be used in defence and the industrial sector.
Superbat offers various of high quality QMA connector, adapters, and custom cable assemblies, etc,.
Please feel free to contact us if you have related needs.