SC stands for Subscriber Connector- a general purpose push/pull style connector developed by NTT. SC has an advantage in keyed duplexibility to support send/receive channels.
SC Connectors are frequently used for newer network applications. The SC is a snap-in connector that is widely used in singlemode systems for its performance. The SC connector is also available in a duplex configuration.
They offer low cost, simplicity, and durability. SC connectors provide for accurate alignment via their ceramic ferrules. The square, snap-in connector latches with a simple push-pull motion and is keyed. They feature a 2.5mm ferrule and molded housing for protection. Typical matched SC connectors are rated for 1000 mating cycles and have an insertion loss of 0.25 dB.
Why is cleaning important?
Maintaining a clean connection or mating point is critical to the performance and proper function of any fiber optic link. The presence of dirt, dust, oil, and other contaminants can cause substantial attenuation, (signal loss) or in some cases completely block signal transmission with connectors, adapters, attenuators, and pin/socket termini. In many cases, dirty connection points are the most common reason for connectivity and performance related issues in a fiber optic network.