Fiber Patch Cables Explained: What’s the Difference Between LC, SC, ST, FC, and MPO? How to Choose?

5G New Technology, Data Center, Enterprise Networking / By

Introduction
Fiber optic patch cables are the “highways” of network communication, enabling high-speed optical signal transmission between devices. However, with different connector types like LC, SC, ST, FC, and MPO, many users struggle to choose the right one. This article breaks down the key features of these common fiber patch cables in an easy-to-understand way and provides practical selection tips to match your needs.

1. Comparison of Five Major Fiber Patch Cable Types (Illustrated)

1. LC Patch Cable

  • Features: Small square connector (1.25mm ceramic ferrule), commonly duplex

  • Advantages: High-density cabling, space-saving, ideal for data centers

2. SC Patch Cable

  • Features: Square push-pull connector (2.5mm ferrule), available in simplex/duplex

  • Advantages: Stable insertion, widely used in broadcasting and telecom

Patchcord SC/APC-SC/UPC, SM, 9/125 duplex, G657A1 fiber, 1 m

3. ST Patch Cable

  • Features: Round bayonet-style connector (similar to BNC), 2.5mm ferrule

  • Advantages: Vibration-resistant, common in industrial environments

ST型光纤跳线_汉信光纤光缆

4. FC Patch Cable

  • Features: Round threaded coupling (metal housing), 2.5mm ferrule

  • Advantages: Secure anti-disconnect design, used in high-interference scenarios

5. MPO Patch Cable

  • Features: Multi-fiber connector (12/24 fibers), rectangular housing

  • Advantages: Supports 40G/100G high-speed transmission

2. Key Selection Factors

  1. Single-Mode (SM) vs. Multimode (MM)

    • Single-mode: Long-distance (10km+), yellow jacket

    • Multimode: Short-distance cost-effective (e.g., data centers), orange/aqua jacket

  2. Polish Type

    • UPC (blue): Standard, return loss -50dB

    • APC (green): 8° angled, return loss -65dB, ideal for CATV/FTTH

  3. Length & Jacket

    • Short cables (0.5-2m) for server rooms (flame-retardant PVC)

    • Industrial use: 3-5m (armored design for crush resistance)

3. FAQ

❓Q: Can LC and SC connectors be used interchangeably?
→ No! An LC-SC adapter is required.

❓Q: Can MPO cables be split manually?
→ No—use breakout cables (MPO-LC). Forcing separation will damage fibers.

Conclusion (~100 words)
Choosing the right fiber patch cable depends on connector type, transmission distance, and environment. As a professional manufacturer, we offer a full range of compliant products (meeting IEC 61754 standards) and custom solutions. Contact our technical team today for a tailored cabling plan!