What are Screw-on Coaxial Connectors?

Screw-in/on coaxial connectors are connectors that have a threaded coupling mechanism to ensure a secure connection between the male and female components. The connectors consist of a center conductor, an insulator, and an outer conductor or shielding. The male connector features a threaded outer conductor with a center pin, while the female connector has a threaded inner conductor with a receptacle for the center pin.

To establish a connection, the male and female connectors are aligned and screwed together. As the threads engage, the connectors achieve a firm mechanical coupling, providing excellent electrical continuity and shielding against electromagnetic interference (EMI). This design ensures a reliable and secure connection, making screw-in/on RF connectors suitable for applications where vibration or movement might occur.

Advantages of Screw-In/On Coaxial Connectors:

Secure and Robust Connection: The threaded coupling mechanism of screw-in/on coaxial connectors offers a high degree of stability and resistance to accidental disconnection. This feature makes them ideal for applications subjected to mechanical stress, vibrations, or environmental factors such as temperature variations.

Low Signal Loss: Screw-in/on coaxial connectors provide low insertion and return loss, which helps maintain the integrity of the signal during transmission. This characteristic is especially critical in high-frequency applications where signal attenuation can significantly impact system performance.

Versatility: Screw-in/on coaxial connectors support a wide range of frequencies, making them suitable for various applications. They are available in different standard types, including SMA (SubMiniature version A), N-Type, TNC (Threaded Neill-Concelman), and BNC (Bayonet Neill-Concelman), among others. This versatility allows for compatibility with different equipment and systems.

EMI Shielding: The threaded coupling mechanism, combined with the presence of the outer conductor, provides excellent electromagnetic shielding. Screw-in/on coaxial connectors help prevent interference caused by external electromagnetic fields, ensuring the integrity and reliability of the transmitted signals.

Screw-in/on coaxial connectors have several considerations that should be kept in mind to ensure proper usage and reliable connections. Correct installation techniques are crucial for reliable connections and to prevent signal loss or damage to the connectors. Proper alignment of the male and female connectors needs to be ensured before tightening. Misalignment can result in poor electrical contact and increased signal loss. An appropriate amount of torque needs to be used while tightening the connectors. Over-tightening can damage the threads or compress the insulator excessively, affecting signal integrity. On the other hand, under-tightening can lead to loose connections and increased signal loss. Appropriate care is to be taken to avoid cross-threading, which occurs when the threads of the connectors are not properly aligned during the screwing process. Cross-threading can damage the connectors and compromise the electrical connection. It should be ensured that the connectors are properly mated and securely tightened to prevent signal leakage. Loose or poorly connected connectors can result in increased signal loss and electromagnetic interference.

Applications of Screw-In/On Coaxial Connectors:

Screw-in/on coaxial connectors find applications in a wide range of industries and technologies, including:

Telecommunications: These connectors are commonly used in wireless communication systems, cellular networks, and satellite communication systems.

Broadcast and Audio-Visual Systems: Screw-in/on RF connectors are utilized in radio and television broadcasting equipment, as well as audio-visual systems for reliable signal transmission.

Aerospace and Defense: Due to their robust design, screw-in/on RF connectors are prevalent in avionics systems, radar installations, and military communication equipment.

Test and Measurement: These connectors are widely used in laboratories and test setups, where precise signal transmission and low signal loss are essential for accurate measurements.

Click here to see Screw-on / Threaded RF connectors from the leading manufacturers.