As the trend toward connector miniaturization continues, the development of ultra-miniature connectors has gained prominence. Connector suppliers have introduced ultra-miniature coaxial connectors to meet the demands of various applications.
MCX
One such connector is the MCX (MicroCoaX), which originated in Europe during the 1980s. Its structure closely resembles the SMB connector, with the inner conductor and overlapping insulator mirroring that of SMB. However, it distinguishes itself by utilizing a snap connection design, with the conductive spring’s center positioning structure facing outward. This unique design significantly reduces the size of the MCX connector. While maintaining reliability on par with the SMB, the MCX is approximately 30% smaller in terms of shape and weight. It is suitable for use in a 6GHz environment and offers more space-saving opportunities compared to traditional SMB connectors. MCX finds applications in various fields, including GPS, automotive, mobile phones, and data communications.
MMCX
Another notable connector is the MMCX (Micro-MCX), developed in Europe during the 1990s. It is about 45% smaller than the SMB connector and features male and female connectors that can rotate freely through 360° during operation, ensuring uninterrupted signal transmission. This characteristic makes it ideal for applications like micro-antennas. Additionally, the BMA series, also known as blind-mate connectors, incorporates fixed sockets with a degree of axial and radial floating, facilitating modular and fast blind-mate replacement systems. These connectors are primarily used in Harsh Environment products and CDMA communication equipment and support an operating frequency range of 0 to 22GHz. The internal nominal size and compatible cables are the same as SMA connectors. The SAA series (DIN47297) comprises push-in self-locking connectors available in 50Ω and 75Ω variations. These connectors are widely used in communication systems, including program-controlled switches and optical transceivers in China.
SSMA
The SSMA series shares structural characteristics with SMA connectors but in a smaller form factor. It operates at frequencies of up to 40GHz and serves as the universal standard for millimeter-wave connectors. Meanwhile, the SSMB series, resembling SMB connectors, is commonly used in Harsh Environment radio stations.
We also offer a variety of other ultra-miniature RF coaxial connectors series including SSMC, SMP, MC-card and MHF connectors to meet different application requirements.
