Fiber optic patch cord FC-SC standard

FC-SC fiber optic patch cords are standardized cables with an FC connector on one end and an SC connector on the other, designed for reliable, low-loss optical signal transmission in single-mode or multi-mode networks.

Overview

An FC-SC patch cord is a fiber optic cable terminated with an FC connector on one end and an SC connector on the other. These cords are used to connect devices such as optical transceivers, switches, and distribution frames in telecommunication networks, data centers, LANs, FTTx, and PON systems . The FC connector features a metal sleeve with a screw-on fastening, providing a dustproof and secure connection, while the SC connector has a rectangular plug with a push-pull mechanism, allowing easy installation without rotation .

Standards and Compliance

FC-SC patch cords are manufactured according to industry standards including TIA 604 (FOCIS), IEC 61754, and YD/T, ensuring interchangeability, repeatability, and high network performance . The connectors use high-quality zirconia ferrules for precise alignment and minimal signal loss.

Fiber Types

These patch cords are available in both single-mode (OS2) and multi-mode (OM1, OM2, OM3, OM4, OM5) fibers . Multi-mode fibers are typically color-coded (OM1/OM2 orange, OM3/OM4 aqua, OM5 lime) and support high-speed Ethernet applications ranging from 1G to 400G/800G, depending on the fiber type and distance . Single-mode fibers are optimized for long-distance transmission.

Performance Characteristics

FC-SC patch cords are designed for low insertion loss, high return loss, bending resistance, and stable performance in harsh network environments . The end-face geometry is precisely controlled to ensure reliable optical connections, and the cables are tested for insertion loss (IL) and return loss (RL) to maintain consistent network performance .

Construction

A typical FC-SC patch cord consists of:

• Optical fiber core (glass, 9 µm for single-mode, 50/62.5 µm for multi-mode)
• Cladding (125 µm silica glass)
• Reinforced coating (resin or Kevlar for strength)
• Outer jacket (PVC, LSZH, or other protective material)
• Connector kit (housing and ferrule for FC and SC ends) The total cable length is measured from ferrule tip to ferrule tip, and standard boots are available for strain relief .

Applications

FC-SC patch cords are widely used in:

• Telecommunication networks
• Data centers and server rooms
• Fiber-to-the-home (FTTH) and FTTx deployments
• Optical test equipment and converters
• Local area networks (LANs) and enterprise cabling They are ideal for connecting devices with different connector types while maintaining high-speed, low-loss optical transmission . In summary, FC-SC fiber optic patch cords provide a standardized, reliable solution for connecting single-mode or multi-mode fiber networks, combining the secure FC connector with the easy-to-use SC connector, and meeting industry standards for performance and durability.