MT-RJ stands for Mechanical Transfer Registered Jack. MT-RJ is a fiber-

optic CableConnectorthat is very popular for small form factor devices due

to its small size. Housing two fibers and mating together with locating pins

on the plug, the MT-RJ comes from the MT connector, which can contain up

to 12 fibers. 

What is the use of this fiber connector?

The MT-RJ is one of the newly emerging small form factor connectors that

are becoming more common in the networking industry. Also, the MT-RJ

utilizes two fibers and integrates them into a single design that looks

similar to an RJ45 connector. Alignment is completed through the use of

two pins that mate with the connector. Transceiver jacks found on NICs and

equipment typically have the pins built into them. As a matter of fact, the

MTRJ is commonly used for networking applications. Its size is slightly

smaller than a standard phone jack and just as easy to connect and

disconnect. It’s half the size of the SC Connector it was designed to replace.

This connector is a small form-factor Fiber optic connector which

resembles the RJ-45 connector used in Ethernet networks. Compared to

single-fiber terminations such as SC, the MT-RJ Connector offers

lower Termination cost and greater density for both electronics and cable

management hardware. This connector is significantly lower in cost and

smaller in size than the SC Duplex interface. The small MT-RJ Interface can

be spaced the same as copper, effectively doubling the number of fiber

ports. The net effect is a Drop in the overall price per fiber Port making

fiber-to-the-desktop solutions more competitive

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