NVIDIA/Mellanox MCA4J80-N004 Compatible 800G Twin-port OSFP 8 x 100G PAM4 IHS/Finned Top InfiniBand NDR Active Copper Twinax Cable, 4m (13ft)
This MCA4J80-N004 compatible cable gives project teams a defined 800G connection in 4m (13ft), with OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top) and NVIDIA/Mellanox host compatibility. Rather than treating all lengths as interchangeable, the page keeps this order code separate and links the other verified lengths for accurate schedules, labels and delivery checks.
OEM Part Number: MCA4J80-N004HT Part Number: MCA4J80-N004
Product Highlights
- Compatible alternative to NVIDIA/Mellanox MCA4J80-N004
- 800G connectivity at 850Gbps (8x 106.25Gbps)
- Interface configuration: OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top)
- Fixed length and part number: 4m (13ft), MCA4J80-N004
- Cable construction: Active DAC (ACC)
- Conductor specification: 26AWG
- Maximum power consumption: 1.3W Per End
- Minimum bend radius: 59.5mm
Specifications
| HT Part Number | MCA4J80-N004 |
|---|---|
| NVIDIA/Mellanox InfiniBand Compatible | MCA4J80-N004 |
| 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 | 4m (13ft) |
| Wire AWG | 26AWG |
| Minimum Bend Radius | 59.5mm |
| 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.
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 26AWG; the minimum bend radius is 59.5mm; 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 26AWG conductors, PET jacket, minimum bend radius 59.5mm. 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.
Length Selection and Installation Planning
The 4m (13ft) length gives MCA4J80-N004 more freedom for adjacent-rack and row-end deployments. Longer copper runs need particular attention to routing weight and bend control; the ACC specification and host support must still match the intended link.
Position Within the Length Range
MCA4J80-N004 occupies the middle of this family between MCA4J80-N002 at 2m (7ft) and MCA4J80-N005 at 5m (16ft). It adds 2m over the shorter option for extra routing clearance, while the next longer version adds another 1m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.
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. Both connectors are examined before the operating test, which includes link stability and diagnostic indications.
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-N004.
What details assist a compatibility review?
Provide the equipment manufacturer, model, port type, hardware revision and software release, together with the OEM reference, required length and quantity.
How should an unused assembly be stored?
Protect both connector ends, keep the cable in a loose bend-safe coil and retain its part-number label so the length and compatibility identity remain traceable.
Can different brands be connected with the same assembly?
Only where both hosts explicitly support the complete interface and compatibility arrangement. Document each end and select the appropriate brand-specific product when required.
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-N004 associated with 4m (13ft) 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. International express, air cargo and sea freight can be selected according to destination and carton volume; customer courier accounts and nominated forwarders are also accepted.
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. Standard protective packing is used by default, with project documentation arranged when requested.
