25G SFP28 DAC Passive Direct Attach Copper Cable, 1m–5m

• Supports data rates up to 25.78Gbps
• Passive copper cable assembly for short-range 25G connectivity
• SFP28 to SFP28 configuration
• Available in 1m to 5m cable lengths
• Compliant with SFF-8402 and SFF-8432 specifications
• Compatible with SFP+ MSA SFF-8431
• Hot-pluggable 20-pin SFP28 electrical interface
• Low insertion loss and low crosstalk for reliable signal transmission
• Low EMI design for high-density networking environments
• Lower power consumption than active optical solutions
• 30 AWG copper cable construction
• Supports high port density and flexible network configuration
• RoHS 2.0 compliant
• Standard commercial operating temperature of 0°C to +70°C

• 25G Ethernet switch-to-switch connections
• Switch-to-server connections
• Top-of-rack (ToR) network connections
• Data center rack-level interconnects
• Cloud computing infrastructure
• High-density server and storage networks
• Short-distance connections between compatible SFP28 network devices
• Network equipment requiring cost-effective 25G connectivity

OEM and customized SFP28 DAC cable solutions are available for network equipment manufacturers, system integrators, distributors, and data center projects. Customization can include cable length, labeling, packaging, branding, and other project-specific requirements.

For larger deployments, customized cable specifications and compatibility requirements can be evaluated to ensure consistent performance across the target network equipment. Contact us with your required cable length, quantity, connector configuration, and compatibility requirements for an OEM solution.

What is the difference between a 25G SFP28 DAC and an AOC?

A 25G SFP28 DAC uses copper conductors to transmit electrical signals directly between the two SFP28 connectors, while an AOC uses optical fiber and active optical components. DACs are generally more economical and power-efficient for short connections, whereas AOCs are better suited to longer cable runs.

What cable length should I choose for a 25G SFP28 DAC?

The available length range is 1m to 5m. For rack-level connections, the recommended length is typically the shortest cable that comfortably reaches between the two devices. Avoiding excessive cable length can help improve rack organization and airflow.

Can this DAC be connected to SFP+ ports?

The SFP28 form factor is mechanically similar to SFP+, and the cable is compatible with the SFP+ MSA electrical specification. However, actual operation depends on the capabilities and configuration of the network equipment. The connected devices should support the required 25G or backward-compatible operating mode.

Is a passive DAC suitable for high-density data centers?

Yes. Passive DACs are particularly suitable for high-density rack environments because they require no optical conversion and consume very little power. Their compact design also allows many short-distance connections to be deployed within a rack or between adjacent network devices.

Does the cable support 25.78Gbps?

Yes. The cable supports multi-gigabit data rates up to 25.78Gbps, making it suitable for 25Gbps Ethernet applications and compatible equipment designed for this data rate.