The QMA connector is a quick-disconnect version of the SMA, offering similar RF performance with faster, tool-free installation. Designed by the Quick Lock Formula Alliance, it supports up to 18 GHz and 50 Ω impedance. Its snap-on mechanism allows 360° rotation and higher port density, making it ideal for telecom, IoT, and modular RF systems where frequent connect/disconnect is required. Compared to SMA, QMA saves assembly time and space while maintaining low VSWR and good electrical stability. However, it is less robust under heavy vibration or harsh outdoor conditions, and its cost and availability can vary among manufacturers. Engineers should verify compatibility, power handling, and frequency ratings before use. Overall, QMA connectors offer a balance of convenience and performance for medium-duty RF applications, serving as a reliable choice when quick installation and compact layouts are priorities without sacrificing signal integrity.