100G QSFP28 Male-to-Female DAC Extension Cable, 1–5m

• 100G QSFP28 male-to-female extension cable design
• Supports up to 28.3125Gbps per channel
• Four-channel architecture for 100G-class connectivity
• Supports transmission distances of up to 5m, depending on configuration
• Compliant with SFF-8665
• Passive copper architecture for low power consumption
• Optimized electrical design for high-speed signal integrity
• Low insertion loss and low crosstalk
• Designed for reduced EMI radiation
• +3.3V single power supply architecture
• QSFP28 38-pin PCBA interface
• Gold-plated electrical contacts for reliable connectivity
• Zinc-alloy connector housing with nickel plating
• Flexible pull-tab and secure connector construction
• 30 AWG copper cable construction
• 6.5 ± 0.2mm nominal outer cable diameter

• 100G Ethernet connection extension
• Data center network infrastructure
• Switch-to-switch and switch-to-server connections
• Storage area networks (SAN)
• High-performance computing (HPC)
• Cloud computing infrastructure
• Telecommunications and wireless infrastructure
• Network test and measurement systems
• Low-EMI networking environments
• Equipment interconnection where additional QSFP28 cable reach is required

OEM and customized QSFP28 extension cable solutions are available for network equipment manufacturers, system integrators, distributors, and data center projects. Customization options may include cable length, connector configuration, cable construction, labeling, packaging, and branding.

For volume projects, we can also evaluate specific host equipment, required extension distance, mechanical constraints, and electrical performance requirements. Providing the target QSFP28 equipment and existing cable configuration helps ensure that the extension solution is appropriate for the intended application.

What is the purpose of a QSFP28 male-to-female extension cable?

Unlike a conventional QSFP28 DAC with two male ends, this product provides a QSFP28 male connector on one end and a QSFP28 female interface on the other. It is intended to extend an existing QSFP28 connection while preserving the original cable and equipment interfaces.

Can this extension cable be used to extend any 100G QSFP28 cable?

Not necessarily. The compatibility of an extension depends on the electrical characteristics of the original cable, the host equipment, and the total channel length. For high-speed 100G links, the complete connection should remain within the signal-integrity limits of the equipment and cable system.

Does adding an extension reduce 100G signal quality?

Any additional connector and cable segment can introduce insertion loss and reflections. This product is therefore designed with an optimized electrical path, controlled construction, and low crosstalk to minimize the impact. For longer combined cable assemblies, the total channel budget should be considered rather than evaluating the extension alone.

Is this an active optical cable?

No. This is a passive copper extension cable. It does not contain optical transmitters, receivers, or active signal conversion components, which helps keep power consumption and system complexity low.

What determines the maximum usable extension length?

The maximum usable distance depends on the extension length, the existing QSFP28 cable, host port characteristics, data rate, and overall electrical channel budget. The product is specified for extension lengths up to 5m, but the complete link should be evaluated when combining it with another cable.

Can this cable be used in high-density data centers?

Yes. Its passive architecture, relatively compact cable diameter, and low-EMI design make it suitable for dense rack environments. The cable can be particularly useful when equipment placement or cable routing requires additional reach without replacing an existing QSFP28 connection.