Which connector is commonly used in UTP cables?

The RJ45 connector is commonly used in unshielded twisted pair (UTP) cables primarily because it is specifically designed for Ethernet networking. UTP cables are widely utilized in networking applications such as local area networks (LANs) due to their effectiveness in reducing crosstalk and electromagnetic interference, which is essential for maintaining signal integrity.

The RJ45 connector itself facilitates an easy and reliable connection for networking devices, such as computers, switches, and routers. Its design features eight pins that correspond to the eight wires found in standard UTP cables, allowing for the effective transmission of data over twisted pairs. This connector type is standardized by the Telecommunications Industry Association (TIA), which ensures compatibility and interoperability in networking environments.

In contrast, the other connector types listed serve different applications. The SC and ST connectors are typically utilized for fiber optic connections, focusing on light transmission rather than electrical signals. The MTP connector is a high-density connector used in multi-fiber applications, primarily in data centers and high-performance networks. Thus, the RJ45 connector's unique design and purpose align closely with the requirements of UTP cabling in Ethernet networking.