What are the heads of fc, lc, and sc fibers?

　　FC, LC, and SC fiber optic connectors are three common types of fiber optic connectors, each of which has a unique shape, connection method, and application scenario. The following is a detailed introduction to these three fiber optic connectors:

　　FC fiber optic connector

　　Shape: The shape of the FC connector is round, and the connector has a thread inside.

　　Connection method: Connect with the FC coupler by rotation, and the fastening method is a screw buckle.

　　Features: Reinforced by metal sleeve, simple connection and easy to operate. But it is easy to lose, and the number of plugging and unplugging is less than other types of fiber optic heads.

　　Application scenarios: Often used in optical fiber distribution frames, but also suitable for routers, switches, optical fiber transceivers and other equipment.

　　LC fiber optic connector

　　Shape: The LC connector is a SMall blue square port, similar in shape to the SC connector but smaller in size.

　　Connectivity: Modular jack (RJ) latch mechanism is adopted, and the size of pins and sleeves is small, which increases the density of fiber optic connectors in fiber optic distribution frames.

　　Features: Easy to connect, easy to operate, and high connection density.

　　Application scenarios: It is often used to connect SFP optical modules and pre-terminated module boxes, and is also suitable for application scenarios that require high-density connectivity.

　　SC fiber optic connector

　　Shape: SC connector is blue wide mouth, shell is rectangular.

　　Connection method: The plug-and-pull pin-type fastening method is adopted, and the connection can be realized without rotation.

　　Features: Standard square connector, easy to plug and unplug directly, high temperature resistance, not easy to age, long service life. But the connector may not be tight enough to fall out easily.

　　Application scenarios: It is commonly used in fiber optic transceivers and GBIC optical modules, and is also suitable for application scenarios that require frequent plugging and unplugging and high temperature resistance.

　　In summary, FC, LC, and SC fiber optic connectors have differences in shape, connection method, characteristics, and application scenarios. When selecting fiber optic connectors, it is necessary to choose the appropriate type according to specific application requirements and scenarios.