SFP28 DAC kabel BlueOptics SFP28-DAC-1M-BL 1 m samec/samec

The BlueOptics SFP28-DAC-1M-BL is a 1-meter SFP28 Direct Attach Copper (DAC) cable with SFP28 male connectors on both ends, designed for short-reach high-speed data links. It supports 25GBase-CR electrical transmission on a 1 m twinax copper connection and is intended for use between compatible network devices such as switches, routers and storage systems that accept SFP28 direct-attach twinax cables.

Advantages

This passive SFP28 DAC cable offers low latency and low power consumption suitable for dense rack environments. The twinax copper design provides a cost-effective, simple and reliable physical connection for short-distance interconnects. Built to MSA-compliant physical specifications and using 30 AWG conductors, the cable delivers predictable electrical performance for Ethernet, FCoE, Fibre Channel and InfiniBand applications up to 25 Gbit/s over the specified 1 m length.

Suitable for

• Interconnecting servers, switches and storage within the same rack or adjacent racks
• High-density data center top-of-rack and middle-of-row links
• Short-reach 25G Ethernet, FCoE or comparable 25G serial protocols
• Environments requiring low-latency, low-power copper interconnects

Key specifications

• Connector type: SFP28 male to SFP28 male
• Length: 1 meter
• Cable type: Passive twinax copper (DAC)
• Wire gauge: 30 AWG
• Data rate: up to 25 Gbit/s
• Transmission: 25GBase-CR electrical interface
• Form factor compliance: SFP28 / MSA-compliant mechanical and electrical dimensions

How to use

Insert each SFP28 connector into the corresponding SFP28 port on the network devices until the latch engages and the connector is seated. Ensure both devices support passive SFP28 DAC twinax cables and the intended 25GBase-CR protocol. Route the cable to avoid sharp bends and mechanical strain; maintain recommended bend radius for twinax copper to preserve signal integrity. No external power or configuration on the cable itself is required — link activation and speed negotiation are handled by the connected hardware and its firmware.

Recommendations

Use this 1 m passive SFP28 DAC cable for short, direct interconnects inside racks or between adjacent racks. Verify device compatibility with SFP28 passive DACs and confirm that firmware and port settings on both ends are configured for 25G operation when required.