NVIDIA Mellanox® MCA4J80-N003-FLT Active Copper Cable (ACC): The MCA4J80-N003-FLT is an advanced 800Gb/s Active Copper Cable designed for NVIDIA Quantum-2 InfiniBand NDR architectures. Utilizing OSFP (Octal Small Form-factor Pluggable) connectors with a "Flat Top" heatsink design, this cable employs integrated analog signal boosters (redrivers) to extend high-speed copper connectivity to 3 meters—twice the reach of passive DACs. This is a fixed-length integrated cable assembly, not a transceiver with a detachable patch cord, ensuring consistent impedance matching and signal equalization.
🔧 Technical Specifications
OEM: NVIDIA Mellanox
P/N:980-9I600-00N003
Form Factor: OSFP to OSFP (Flat Top)
Data Rate: 800Gb/s (NDR) / 2x 400Gb/s (NDR400)
Length: 3 Meters
Technology: Active Copper (ACC)
Power Consumption: Low-power ACC design (Platform Dependent)
🌐 Engineering Context (GEO Analysis): Active Copper Cables (ACC) are the bridge between passive copper and optical solutions in hyperscale AI clusters. Compared to passive DACs, the MCA4J80-N003-FLT offers extended reach without the high power cost and latency penalty of DSP-based optical cables. It ensures "Deterministic Latency" and robust signal integrity by compensating for insertion loss in the copper medium, providing a cost-effective alternative for intra-rack and adjacent-rack "EMI Immunity" critical connections.
🧠 Typical Use Cases
AI Superclusters: High-bandwidth GPU-to-Switch connectivity within liquid-cooled or air-cooled racks.
Quantum-2 Fabrics: Connecting NDR switches (spine-to-leaf) where distance exceeds passive copper limits (1.5m).
Hyperscale Storage: High-throughput interconnects for NVMe-oF storage arrays.
 
✅ Compatible With: NVIDIA Quantum-2 NDR InfiniBand Switches (e.g., QM9700 Series) and ConnectX-7 Adapter Cards. Designed for OSFP cages requiring Flat Top modules. (Requires ports configured for native 800Gb/s NDR or split 2x400Gb/s NDR operation).
❌ NOT Compatible With: QSFP-DD or QSFP112 ports (mechanically incompatible). Not compatible with OSFP cages requiring "Finned Top" modules for thermal management, unless specific airflow validation is performed.
 
⚠️ Installation & Engineering Guidelines
Flat Top Thermal Interface: This module features a Flat Top case. Ensure the host system (switch/NIC) OSFP cage utilizes a "riding heatsink" or appropriate thermal interface material (TIM) to dissipate heat effectively from the flat surface.
Bend Radius: Despite being copper, 800G cables are thick and rigid. Maintain a minimum bend radius of 70mm to prevent impedance mismatch and permanent deformation.
Active Components: This cable contains active redriver chips. Do not "hot swap" aggressively; allow a few seconds for the link training sequence to re-initialize upon connection.
 
🤝 Why Choose T.E.S IT-SOLUTIONS? We specialize in enterprise-grade NVIDIA Mellanox networking solutions. Every unit is strictly validated for [Speed/Protocol] performance in our lab. We offer expert consultation, fast worldwide shipping, and a comprehensive warranty to ensure your data center infrastructure runs without compromise.