Overview

25G SFP28 Passive Direct Attach Copper Cable for High-Speed Datacenter Connectivity
The Optcore 25G SFP28 passive Direct Attach Copper cable is designed for efficient short-reach Ethernet connectivity in modern datacenter and enterprise networking environments. It delivers reliable high-bandwidth performance while maintaining low power consumption and cost efficiency, making it suitable for high-density switch-to-switch or switch-to-server applications.

Optcore's SFP28 passive cable assemblies are high-performance, low-cost 25G Ethernet I/O connectivity solutions designed to address datacenters' rising bandwidth requirements. The 25G SFP28 passive copper cable has a single high-speed copper pair capable of data transfer rates of up to 25Gb/s. This SFP28 copper cable allows hardware manufacturers to achieve high port density, reconfigurability, and utilization at a low cost and small power budget.

Description

This passive DAC cable assembly is built for stable 25GbE interconnect performance over short distances, offering a practical alternative to optical transceivers in high-throughput environments. It supports simplified deployment by eliminating the need for additional power and optical components, while maintaining consistent signal integrity across supported links. The design focuses on minimizing latency and maximizing port efficiency in dense networking architectures.

Features

Core Applications and Use Cases
The cable is typically deployed in environments where high-speed, low-latency interconnects are required over short ranges. Common use cases include top-of-rack switching, leaf-spine architectures, and direct server-to-switch connections in hyperscale or enterprise datacenters.

Technical Characteristics
The assembly integrates a single high-speed copper differential pair engineered for 25Gb/s transmission. It is optimized for compatibility with SFP28 interfaces and supports efficient signal delivery across short-reach links without active electronic components.

Key technical points:

• Data rate support up to 25Gb/s
• Passive direct attach copper construction
• SFP28 compliant form factor
• Low power consumption due to passive design
• Optimized for short-distance datacenter interconnects

Build and Deployment Advantages
By removing the need for optical transceivers, this DAC solution reduces system complexity while improving energy efficiency. It is particularly effective in environments where scalability and port density are critical design priorities.

The model number for this product is OPT-SFP-DAC-25G-1A, commonly used for procurement, inventory tracking, and system integration reference across networking deployments.

Connectivity and Performance Positioning
This cable is positioned for environments requiring predictable, low-latency Ethernet performance. Its passive architecture supports stable throughput without introducing additional power overhead, making it a practical choice for cost-sensitive yet performance-driven network designs.