SMA connectors are a type of coaxial connector that was developed in the 1960s for use in high-frequency microwave and millimeter-wave applications. They are named for their screw-type mating mechanism, which allows for a secure connection between two SMA connectors. SMA connectors are commonly used in a wide range of applications, including telecommunications, networking, military and aerospace, medical equipment, and more.

SMA connectors are typically made of a combination of different materials, to control the cost of product precisely, we choose the variety materials for SMA
The materials used are determined by the needs and application scenarios of the clients. Consumer clients, for example, require low-cost solutions. We can use brass solutions for the body, nut, pin, and socket, and PTFE for the insulator. For military and laboratory applications, we can utilize stainless steel body and nut, brass pin, beryllium copper socket, and PEEK insulator.

How to choose cable assembly First, What's is cable assembly, In this article, we only think that's RF cable assembly. Also, we call it RF cable jumper too. Usually, cable assembly has two RF connector and one coaxial cable. The purpose transmit microwave signal. It's widely used in the antenna

Return loss and VSWR (Voltage Standing Wave Ratio) are measurements for the same parameters; they have a logarithmic transition; see this link for a comparison table of return loss and VSWR.The return loss is an important parameter of an RF connector; as the value increases, the signal loss decrease

Definitely. SMA, 3.5mm, and 2.92mm (K) connectors can all be mated to each other due to their shared mechanical properties. However, the connection is not perfect and does lead to decreased electrical performance because the dimensions of each connector are slightly different.