25G SFP28 Direct Attach Copper Cable (DAC): Optimized for 25G/100G Migration
The 25G SFP28 Direct Attach Copper Cable (DAC) is a high-speed passive Twinax cable designed for short-range 25Gbps Ethernet links (up to 5m/7m). Compliant with SFF-8402 and IEEE 802.3by standards, this zero-power consumption solution is the gold standard for connecting 25G servers to 100G Top-of-Rack (ToR) switches. It offers near-zero latency and superior EMI shielding, essential for 5G database environments and AI compute clusters.
Cost-effective Networking Solutions from DAC Cable
DAC cable is to provide cost-effective networking solutions for short distance connections. As an alternative to optical transceivers and fiber optic cabling, direct attach copper cable offer comparable performance at a lower cost, making them an economical choice for high-speed data transmission in limited network space. The internal material of the high-speed 25G SFP28 DAC cable is copper core, which is both energy efficient and environmentally friendly as it provides natural heat dissipation. The active optic cables typically consume around 440mW, but the direct attached copper cable do not require a power source, it could save on the on electricity costs.
Compatible with Different Switches
The direct attach cable features with 25G SFP28 fiber transceiver, which is compatible with Cisco, Juniper, H3C, Huawei, Alcatel, Allied Telesis, Zyxel, Brocade, Mikrotik, Extreme, Blade, D-linnk Netgear, Finisar, ZTE, Linksys, SMC, Ruijie, Avaya, 3com, Enterasys, Redeback, Planet or etc.
Technical Performance & Signal Integrity
At 25Gbps, passive copper cables must overcome high-frequency skin effects to maintain link stability.
| Feature | 25G SFP28 Passive DAC | 25G SFP28 AOC (Optical) |
| Transmission Rate | 25.78125 Gbps | 25.78125 Gbps |
| Power Consumption | < 0.1W (Passive) | ~1.0W per end |
| Max Reach | 5 Meters (Standard) | Up to 100 Meters |
| Latency | Lowest (Nanoseconds) | Microseconds (O-E Conversion) |
| Durability | High (Robust Copper) | Moderate (Fragile Fiber) |
SFP28 Direct Attach Cable Applications
lSwitches / Routers / HBAs/SAN, NIC cards
lServer & Storage Devices
lData Center Networking
lHigh Performance Compute
lFiber Channel
lInfiniBand QDR/DDR
l10Gbs/40Gbs Ethernet
The 25G SFP28 DAC is the cornerstone of Cloud Computing, NVMe Storage Clusters, and 5G Front-haul (eCPRI). It bridges the performance gap between legacy 10G and future 100G networks without the high cost of optical modules.
Rigorous Testing Guarantees of 25G DAC Cable Wholesale
If you are looking for a potential DAC copper cable solution to solve network latency, utility costs or density issues, let Op2Link help. We are committed to providing high-quality DAC cable that undergo stringent testing procedures. Our meticulous approach encompasses every step, from careful material selection to rigorous performance evaluations. By adhering to these rigorous standards, our DAC cable are designed to deliver reliable and high-performance data transmission in even the most demanding network environments. With the incorporation of top-quality components and our unwavering commitment to stringent testing processes, the DAC cable has become the trusted choice for network professionals who seek unparalleled quality and performance.
Solving Your Connectivity Challenges
Transitioning from 10G to 25G often introduces unexpected compatibility errors or airflow bottlenecks in high-density racks. At Op2Link, our goal is to simplify this migration for you. Whether you need advice on selecting the right AWG (30/28/26) for your specific distance or require multi-vendor coding for a heterogeneous environment, our engineering team is here to provide a tailored connectivity blueprint.
If you’re facing intermittent link issues or planning a large-scale 25G rollout, let’s talk about a solution that fits.
