C-LIGHT CLQD8-QD8CU-1.5 is an 800G Direct Attach Copper Cable (DAC) in QSFP-DD form factor, designed for hyperscale data centers, AI clusters, and industrial automation. Leveraging high-performance copper and integrated signal conditioning, it delivers 800Gbps full-duplex transmission over 1.5m with ultra-low latency. Its commercial (0°C~70°C) and industrial (-40°C~85°C) temperature support ensures reliability from data centers to harsh factory floors.
1.Core Technical Advantages
●Extreme Density & Bandwidth
-800Gbps Full-Duplex: 8×100Gbps NRZ channels, compliant with IEEE 802.3ck for NVIDIA NVLink/AMD Infinity Fabric.
-QSFP-DD Double Density: Backward compatible with QSFP56/QSFP28, enabling 36 ports/RU (20% denser than AOC).
●Power & Cost Efficiency
-≤1.5pJ/bit Efficiency: No optical conversion, total power<5w>
-TCO Advantage: 50% cost savings vs. AOC by eliminating optics and fiber management.
●Industrial-Grade Robustness
-Vibration & EMI Resistance: Gold-plated connectors + shielded cable pass IEC 60068-2-6 tests for robotics/AGV environments.
-Wide-Temperature Operation: Industrial variant suits outdoor基站 and smart factories.
3.Applications
●AI/GPU Cluster Inter-Rack Connectivity
Links NVIDIA DGX/HGX systems with<100ns latency="" for="" billion-parameter="" model="" training="">
●Cloud Data Center TOR Networks
Delivers 25.6Tbps intra-rack bandwidth for containerized microservices.
●Industrial Control Systems
Ensures real-time signal stability between PLCs and vision systems in noisy environments.
●Enterprise Storage Upgrades
Replaces 40G/100G DACs, enabling 800G migration with legacy QSFP28 switches.
4.Why Choose C-LIGHT 800G DAC?
●Protocol Flexibility
Supports InfiniBand HDR, 800GAUI-8 Ethernet, and RoCEv2 for heterogeneous computing.
●Deployment Simplicity
Hot-swappable plug-and-play design reduces deployment time by 90% vs. fiber splicing.
●Lifecycle Management
Firmware upgrades and link health monitoring (per SFF-8436) enable predictive maintenance.
5.Installation & Maintenance
●Cabling Best Practices:
-Maintain bend radius ≥10× cable diameter to preserve signal integrity.
-Use layered cable trays to minimize crosstalk in high-density setups.
●Troubleshooting:
-Diagnose physical layer issues via switch port BER logs.
●Solution Comparison:
Choose DAC for ≤1.5m (cost/latency) vs. AOC for 1.5~30m (EMI resistance/weight)
If you are interested in the 800G DAC, please contact us
