is a type of connector with a cylindrical basic structure and a circular mating surface. In the interconnection classification, it belongs to category 5 and is used for interconnection between devices. Broadly speaking, it includes low-frequency circular connectors, radio frequency coaxial connectors and audio connectors. The cylindrical structure of the circular connector has natural sturdiness and higher strength than any other shape.
The industry is used in aviation, aerospace, post and telecommunications, computers, navigation and various instruments, meters and other equipment
are electrical/electronic connection devices with round interfaces, compact, reliable, and easy to use. They enable circuit/signal connection/disconnection via plug-socket mating, suitable for frequent plugging, high-reliability, or harsh environments. Designed for mechanical strength and environmental adaptability, they offer water/dust resistance, vibration/impact resistance; high-end models have heat/corrosion resistance or EMI shielding. Internal components—contacts, insulators, housings, locks—ensure stable, safe connections. Used in aerospace, industrial, medical, transportation (auto/rail), and comms, adapting to extreme/dusty/humid conditions. Evolving toward miniaturization, high-power, high-speed data, standardized interfaces boost compatibility and interchangeability, cutting installation / maintenance costs.