LC Connector

LC connector is similar to the SC connector, but will be smaller in size than the SC connector. It is made with an easy-to-operate modular RJ (registered jack ) latch mechanism, that is, a snap-on (small) square interface. LC fiber optic connector is very common in single-mode network equipment and is generally used on optical transceivers to supports Gigabit Ethernet transmission. Judging from the current market occupancy, the position of LC fiber connector is very stable and plays an important role in the environment of fiber optic connections.

So far, the advantages of LC fiber optic connectors are also obvious.

  • The first is its connector size, which is half of that of ordinary SC and FC interfaces. In this way, in the optical fiber distribution frame, the density of optical fiber connectors can be increased and space can be saved.
  • Secondly, its joint design has the characteristics of anti-locking, which enhances the stability of the pull-out resistance and improves the durability of the interface connection.
  • Finally, because it is a common fiber optic connector, it is more popular because of its diverse matching, simple and time-saving installation.

LC Connector: Small Form Factor Solution for LC Fibers

The LC fiber connector is a compact and efficient small form factor (SFF) connector designed specifically for connecting LC fibers, offering a reliable solution for various optical networking applications.

Then what is LC interface? Developed initially by Lucent Technologies for TelCo environments, the acronym LC primarily represents Lucent Connector. Additionally, LC can also refer to Little Connector and Local Connector, emphasizing its versatility across different contexts. The optical products employ traditional connector components but incorporate a 1.25mm ceramic ferrule, enhancing their performance and adaptability.

Key Features of LC Connectors

  • Small Form Factor (SFF) Design: The LC fiber connector’s compact form factor allows for efficient use of limited space, making it ideal for high-density environments where numerous fiber connections are required.
  • Designed for LC Fibers: It is specifically engineered to join LC fibers, ensuring a precise and secure connection for reliable data transmission.
  • Lucent Connector Heritage: Originally developed by Lucent Technologies, this connector boasts a legacy of reliability and quality, making it a trusted choice in telecommunications environments.
  • Versatile Acronym: While primarily standing for Lucent Connector, the LC acronym is also associated with Little Connector and Local Connector, showcasing the connector’s adaptability to different optical networking scenarios and applications.
  • Utilizes Traditional Components: The products incorporate standard connector components, ensuring compatibility with existing infrastructure and equipment. This feature simplifies integration and minimizes the need for extensive modifications.
  • 1.25mm Ceramic Ferrule: One of the distinguishing features is the use of a 1.25mm ceramic ferrule. This smaller ferrule size enables higher connection density and facilitates precise alignment between fibers.

Specification of LC Fiber Connectors

The connector comes in single-mode or multimode configurations, available in simplex or duplex. It supports 900 μm buffered fiber or 2-3mm jacketed fiber applications. The typical connector insertion loss is 0.2 dB for both single-mode and multimode, with a connector return loss greater than 26 dB for multimode and greater than 50 dB for single-mode.

Benefits of LC Connectors

  • High Density Connectivity: The compact design allows for efficient use of space, making them ideal for applications requiring a high density of fiber connections, such as data centers and telecommunications optical networking.
  • Reliable Performance: LC connector fiber, benefiting from their heritage and adherence to industry standards, provide a reliable and consistent connection for uninterrupted data transmission.
  • Easy Integration: By utilizing traditional connector components, LC connectors can seamlessly integrate with existing infrastructure, reducing installation time and simplifying upgrades or modifications.
  • Precise Fiber Alignment: The 1.25mm ceramic ferrule ensures precise alignment of LC fibers, resulting in low insertion loss and minimal signal degradation, leading to reliable and high-quality data transmission.


Bonelinks offer a robust and reliable solution for various gigabit ethernet applications, including high-density telecommunication rooms, LANs, public networks, and fiber-to-the-desk setups. These fiber optic connectors are specifically designed to meet the optical networking demands of backbone, horizontal, and work area applications that require high-speed data transmissions.

With their high-density design and utilization of 1.25mm ferrules, Bonelinks LC connectors effectively double the port density compared to SC connectors, reducing space requirements on racks, enclosures, panels, and faceplates. Our product options including LC-LC connector, ST LC connector, etc. Bonelinks is also proud to to offer our selection of Stainless Steel Ferrule Connectors and Stainless Steel Mini Fiber Optic Connectors used in the Medical, Industrial and Laser applications.

Looking for More Fiber Optic Connectors?

Are you seeking more options? Discover our extensive selection of fiber optic connectors for seamless networking.

Connector Type


Connector Boot Color

Blue, Green, Beige

Connector Boot Aperture (MM)

0.9 or 2.0 or 3.0

UPC Endface Concentricity (MM)


APC Endface Concentricity (MM)


Connector Endface


Ceramic Ferrule OD (MM)


Ceramic Ferrule ID (MM)


Ceramic Ferrule Stiffiness (HV)


Installation Temperature Range

-40℃ to 70℃ (-40°F to 158°F )

Operation Temperature Range

-40℃ to 85℃ (-22°F to 185°F )

Storage/Transport Temperature Range

-40℃ to 85℃ (-40°F to 185°F )

Insertion Loss (dB)

Typical Values≤0.2; Max Values≤0.3

Mating (times)


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