| SC stands for "Subscriber Connector" or "Square | | | | place when mated. This square design and push/pull |
| Connector". It was developed by NTT. | | | | coupling mechanism make the it usable in high-density |
| SC connector has a push-pull locking mechanism | | | | applications. |
| which is very flexible yet provides high repeatability | | | | The SC connector may be coupled in duplex sets with |
| and low insertion loss. It has been quickly replacing | | | | a coupling receptacle or duplex clip. In a keyed duplex |
| legacy connectors such as ST, SMA connectors and | | | | set, the SC connector easily implements a form of |
| becoming the current most popular fiber connectors | | | | polarity matching with coupling adapters in fiber optic |
| used in the fiber optic communication industry. | | | | outlets or patch panels. |
| Because of its push-pull snap-in locking mechanism, SC | | | | SC connector has been adopted by TIA as the official |
| connector has the advantage in keyed duplexibility to | | | | recommended fiber connector in TIA/EIA 568-A. In the |
| support send/receive channels in a single fiber | | | | standard, it is called as 568SC connector. |
| connection unit. | | | | Duplex version of SC connectors is gaining popularity |
| SC connector uses ceramic ferrules so they can | | | | in networks and other applications requiring full-duplex |
| provide accurate fiber alignment and high reliability. The | | | | transmission. The connector is suitable for single mode |
| ceramic ferrule is a 2.5mm diameter cylindrical | | | | and multimode fibers. The SC connector offers |
| structure and the fiber is fixed in a hole at the center. | | | | excellent packing density as well as exceptional |
| The typical insertion loss of a SC connector is about | | | | performance and cost. |
| 0.2dB. | | | | SC connectors are widely used in Gigabit Ethernet, |
| From outside, the SC connector is an unusual looking | | | | ATM, LAN, MAN, WAN, data communication, Fibre |
| square-tipped connector that is slightly cone-shaped at | | | | Channel, and telecommunication networks. |
| the tip. It uses spring retention to hold the connector in | | | | |