NVIDIA Mellanox MCA4J80-N003-FLT InfiniBand NDR OSFP Active Copper Cable, 3m, Flat Top, New
The MCA4J80-N003-FLT is an 800Gb/s Active Copper Cable (ACC) for NVIDIA Quantum-2 InfiniBand NDR fabrics. It uses OSFP connectors on both ends with a Flat Top heatsink profile and integrates internal analog signal conditioning (redrivers) to support 3-meter copper links. This extends reach beyond the ~1.5m limit of passive DACs while avoiding the high power and cost of DSP-based optical transceivers. This is a New unit.
Engineering Context
ACC technology bridges the gap between passive copper and active optical interconnects. The MCA4J80-N003-FLT uses integrated redriver ICs to compensate for copper insertion loss at 800Gb/s, enabling deterministic low latency without optical serialization overhead. Flat Top designation indicates the connector shell profile for compatibility with cage thermal designs that use riding heatsinks inside the switch chassis.
Deployment & Use Cases
Same-rack and adjacent-rack 800Gb/s NDR links where passive DAC reach is insufficient. Spine-to-leaf connectivity in NVIDIA Quantum-2 fabrics requiring 2–3 meter links. OSFP-to-OSFP connections between QM9700/QM9790 switches and ConnectX-7 OSFP adapters. Environments where optical transceivers are cost-prohibitive for short-reach connections.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCA4J80-N003-FLT
NVIDIA P/N: 980-9I600-00N003
Connector (Both Ends): OSFP, Flat Top
Data Rate: 800Gb/s NDR (8x 100G PAM4)
Split Mode: Supports 2x400Gb/s NDR400
Cable Type: Active Copper Cable (ACC)
Length: 3m
Heatsink Profile: Flat Top (not Finned)
Protocol: InfiniBand NDR
Condition: New
Compatibility & Hard Constraints
Compatible with NVIDIA Quantum-2 switches (QM9700/QM9790) OSFP ports. Compatible with NVIDIA ConnectX-7 OSFP-port adapters. Flat Top profile requires cages with riding heatsink thermal design — not compatible with cages designed for Finned Top modules. Not compatible with QSFP-DD or QSFP112 ports (physical connector mismatch). Active components require brief link training upon insertion. Minimum bend radius 70mm.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS provides new NVIDIA Mellanox ACC cables with full vendor warranty. We offer expert consultation on NDR InfiniBand deployment, including thermal validation guidance for Flat Top vs. Finned Top requirements, with fast international shipping.