What port is the sc jumper?

　　SC jumper refers to a cable assembly that is equipped with SC connectors at both ends and composed of optical fibers in the middle for connecting different optical devices. Among them, "SC" represents its connector type and is Subscriber. Connector (user connector or standard connector) abbreviation, this connector was first designed by the Japanese NTT company, and later developed and promoted by the Japanese NEC company in the late 1980s. The following is a detailed introduction to the SC jumper interface:

　　First, appearance and size

　　SC connectors are rectangular in appearance, measuring 22mm x 11mm, and are moderately sized and portable, making them easy to operate in crowded cabinets or panels.

　　SC connectors feature a plug-in design and are precisely aligned through a keyway and keypin combination to ensure accurate fiber connection.

　　II. Structural features

　　SC connectors typically have a spring-loaded device inside for quick insertion and removal, while maintaining good physical contact and optical properties.

　　SC jumper outside will be wrapped in a layer of soft and tough sheath, commonly used materials include PVC, LSZH (low SMoke halogen-free), nylon, etc., to protect the fiber from external environmental factors.

　　III. Optical fiber types and applications

　　SC fiber jumpers can be divided into single-mode Fiber Jumpers and multimode fiber jumpers according to fiber types.

　　Single-mode Fiber Patch Cords are suitable for long-distance, high-bandwidth transmission, typically using a fiber core diameter of 9/125 μm, with extremely low signal loss.

　　Multimode fiber jumper: suitable for short-distance, medium bandwidth requirements of the network environment, the common core diameter of 50/125μm or 62.5/125 μm.

　　SC jumper is often used in data communication, local area network, metropolitan area network and even wide area network and other optical networks, which is an important component to connect optical communication equipment such as routers, switches, servers, measuring instruments, etc.

　　IV. Performance parameters

　　Plug and unplug times: SC jumpers are designed to be durable and can withstand thousands of plug and unplug cycles.

　　Protection class: It has certain shock and vibration resistance and is suitable for various application scenarios.

　　Insertion Loss: measures the impact of connector insertion on optical signal power loss, usually less than 1dB, and high-quality products may reach 0.3dB or less.

　　Return loss (Return Loss): Represents the proportion of reflected light relative to incident rays, reflecting the focusing ability and surface flatness of the beam of light of the connector, generally requires more than 25dB, and high-quality SC jumpers can reach more than 50dB.

　　V. Precautions for use

　　To protect the fiber from signal attenuation or breakage due to excessive bending, the recommended minimum bending radius for SC fiber jumpers is about 3 centimeters.

　　SC fiber optic jumpers can operate over a wide temperature range, typically between -20 ° C and 60 ° C, with some special models available to cover more extreme temperatures.

　　In summary, SC jumper is a high-performance and high-reliability optical fiber connection component, which is widely used in various optical fiber communication systems.