About two decades ago, the introduction of push-on blindmateable connectors, such as the SMP, galvanized the RF & Microwave industry as their use enabled designers to increase package density by enabling stacking of PC boards, and also simplification in assembly and test of their designs.
This new line of push-on connectors are ideal for rugged military and commercial applications, where susceptibility to vibration and other environmental factors has historically limited designers to use threaded connectors such as the SMA, Type N, etc. SMP-L connectors and cables provide a strong retention force, and are also available in a sealed IP-67 compliant option