Category 5e shielded cables (Cat5e STP/FTP) are designed to support Gigabit Ethernet at frequencies up to 100 MHz while minimizing electromagnetic interference through foil or braided shielding.

Performance Specifications

Cat5e shielded cables are an enhanced version of the original Cat5 standard, supporting data transmission speeds up to 1 Gbps and frequencies of up to 100 MHz. The “e” in Cat5e indicates improvements over Cat5, primarily in reducing crosstalk and improving overall signal integrity . These cables are suitable for 10/100/1000BASE-T Ethernet networks and can maintain reliable performance over standard distances of up to 100 meters .

Shielding Types

Shielded Cat5e cables include protective layers to reduce electromagnetic interference (EMI) and radio frequency interference (RFI). Common shielding configurations are:

• STP (Shielded Twisted Pair): Each twisted pair is wrapped in foil or a combination of foil and braided shielding.
• FTP (Foiled Twisted Pair): All pairs are collectively wrapped in a foil shield for additional protection . Shielding improves signal integrity, particularly in environments with high interference, such as industrial settings or areas with many electronic devices. Shielded cables can reduce crosstalk by up to 30% compared to unshielded cables .

Construction and Materials

Cat5e shielded cables typically use pure copper conductors, either stranded for flexibility or solid for permanent installations. The cable jacket may be PVC, PE, or TPE, depending on indoor, outdoor, or industrial applications. Industrial-rated shielded cables often feature double shielding and enhanced resistance to UV, oil, moisture, and mechanical stress .

Standards Compliance

Cat5e shielded cables are designed to meet TIA/EIA-568-B standards, as well as international standards such as ISO/IEC 11801, IEC 61156, and EN 50173. These standards define:

• Electrical performance (attenuation, crosstalk, return loss)
• Mechanical properties (flexibility, tensile strength)
• Testing requirements for frequencies up to 100 MHz

Applications

Shielded Cat5e cables are ideal for:

• High-interference environments: Factories, data centers, or areas with heavy electronic equipment
• Longer cable runs: Maintaining signal integrity over distances approaching 100 meters
• Industrial Ethernet: Motor control centers, outdoor installations, or areas requiring UV and moisture resistance In summary, Cat5e shielded cables combine the high-speed performance of Cat5e with enhanced EMI/RFI protection, making them suitable for both standard and challenging network environments while adhering to recognized industry standards.