NVIDIA/Mellanox MCA4J80-N002 Compatible 800G Twin-port OSFP 8 x 100G PAM4 IHS/Finned Top InfiniBand NDR Active Copper Twinax Cable, 2m (7ft)
For project documentation, NVIDIA/Mellanox MCA4J80-N002 and this cable’s physical length should be recorded together. The product described here is a 2m (7ft) ACC assembly for 800G links, using OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top). Its OEM cross-reference, HT part number, specification table and packing options support traceable ordering and installation records.
OEM Part Number: MCA4J80-N002HT Part Number: MCA4J80-N002
Product Highlights
- Compatible alternative to NVIDIA/Mellanox MCA4J80-N002
- 800G connectivity at 850Gbps (8x 106.25Gbps)
- Interface configuration: OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top)
- Fixed length and part number: 2m (7ft), MCA4J80-N002
- Cable construction: Active DAC (ACC)
- Conductor specification: 30AWG
- Maximum power consumption: 1.3W Per End
- Minimum bend radius: 48.5mm
Specifications
| HT Part Number | MCA4J80-N002 |
|---|---|
| NVIDIA/Mellanox InfiniBand Compatible | MCA4J80-N002 |
| Manufacturer | HT |
| Form Factor | OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top) |
| Max. Data Rate | 850Gbps (8x 106.25Gbps) |
| Media | Copper |
| Cable Type | Active DAC (ACC) |
| Cable Length | 2m (7ft) |
| Wire AWG | 30AWG |
| Minimum Bend Radius | 48.5mm |
| Max. Power Consumption | 1.3W Per End |
| Jacket Material | PET |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation Format | 8x100G-PAM4 |
| Application | 800G InfiniBand |
| Protocols | CMIS 5.0, IEEE 802.3ck, OSFP Rev5.0 |
Signal and Lane Configuration
The listed modulation format is 8x100G-PAM4. Both host interfaces must be configured for the same aggregate rate and lane arrangement. A connector that fits mechanically does not by itself guarantee that the remote port supports this encoding or breakout mode.
Length Selection and Installation Planning
MCA4J80-N002 provides 2m (7ft) for connections between separated rack units or nearby equipment positions. Plan the route around cable managers and power cords, keeping the assembly free from connector strain while avoiding a large obstruction in the airflow path.
Position Within the Length Range
MCA4J80-N002 is the shortest of 3 verified length options in this family. It is the preferred choice when the port positions are close and cable slack must be kept to a minimum. The next option is MCA4J80-N004 at 4m (13ft), adding 2m for a less direct routing path; selecting it unnecessarily would leave more cable to dress.
Project Documentation and Cable Identification
Large deployments are easier to audit when the order code, physical length and endpoint record agree. Keep the OEM reference in the compatibility document and use the HT part number on the packing list. Where several lengths arrive together, labels and carton groups can be arranged by rack or port plan so installers do not have to identify cables by appearance alone. For this assembly, the listed conductor specification is 30AWG; the minimum bend radius is 48.5mm; the stated power consumption is 1.3W Per End; the jacket material is PET.
Power and Thermal Planning
The rated power consumption is 1.3W Per End. Include this load in the host-port power and thermal budget, especially in densely populated switches. Maintain front-panel clearance and do not bundle the cable so tightly that it obstructs airflow around the connectors.
Cable Construction and Routing
This assembly uses 30AWG conductors, PET jacket, minimum bend radius 48.5mm. These mechanical characteristics affect how the cable should be dressed behind the equipment. Avoid sharp edges, excessive ties and repeated tight bends close to the connector boots.
Network and Protocol Considerations
The intended application is 800G InfiniBand. Listed interface and protocol references include CMIS 5.0, IEEE 802.3ck, OSFP Rev5.0. Confirm that the host firmware and port configuration support the same operating mode.
NVIDIA/Mellanox Compatibility and Factory Testing
Factory verification links the compatibility identity to the exact physical assembly described on this page. Identification, connector condition and live link behavior are checked before packing. Customers can submit equipment and firmware details with the project documentation for a more specific pre-order compatibility review. The check includes link stability and diagnostic indications, followed by a final inspection of both ends.
Frequently Asked Questions
Is this an original NVIDIA/Mellanox cable?
No. It is an HT-manufactured compatible alternative for equipment that specifies NVIDIA/Mellanox MCA4J80-N002.
Does this order code cover multiple lengths?
No. MCA4J80-N002 refers here to 2m (7ft). Every other verified length has a separate part number and page in the length list.
Are separate transceivers or patch leads required?
No. This is one complete direct-attach assembly. The ends are not detachable modules and should not be separated from the cable.
Can excess cable be folded into a compact bundle?
No. Use a supported, bend-safe service loop and observe the listed minimum bend radius. Do not crease the cable or tighten ties around the connector boots.
Ordering Information
Use the listed HT part number for ordering and retain the OEM reference as the host-compatibility cross-reference. Send quantities by length, along with any rack-based packing or label instructions. If the project has mixed equipment, include the host model for each group rather than relying only on the aggregate cable rate. Keep MCA4J80-N002 associated with 2m (7ft) throughout the order and receiving record.
Shipping and Lead Time
Available stock is generally dispatched within one to three working days after order confirmation, with production lead times advised for larger quantities. Worldwide courier services are available, with air or sea freight for consolidated shipments; freight-collect delivery and coordination with a customer’s logistics provider can be arranged.
Quality Assurance and Packaging
Inspection and link testing are completed before the cable enters its protective packaging. Project orders can be packed and labelled by length, rack or customer reference, with packing documentation that makes received quantities straightforward to reconcile against the installation schedule. Volume orders can include customer references on the labels and carton list.
