NVIDIA/Mellanox MCA7J65-N004 Compatible 800G Twin-port OSFP 8 x 100G PAM4 IHS/Finned Top to 2 x 400G QSFP112 4 x 100G PAM4 Ethernet Active Copper Breakout Cable, 4m (13ft)
This MCA7J65-N004 compatible cable gives project teams a defined 800G connection in 4m (13ft), with OSFP (IHS/Finned Top) to 2x QSFP112 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: MCA7J65-N004HT Part Number: MCA7J65-N004
Product Highlights
- Compatible alternative to NVIDIA/Mellanox MCA7J65-N004
- 800G connectivity at 850Gbps (8x 106.25Gbps)
- Interface configuration: OSFP (IHS/Finned Top) to 2x QSFP112
- Fixed length and part number: 4m (13ft), MCA7J65-N004
- Cable construction: Active Breakout DAC (ACC)
- Conductor specification: 26AWG
- Maximum power consumption: 1.5W (OSFP End)0.6W (QSFP112 Per End)
- Minimum bend radius: 40mm
Specifications
| HT Part Number | MCA7J65-N004 |
|---|---|
| NVIDIA/Mellanox Ethernet Compatible | MCA7J65-N004 |
| Manufacturer | HT |
| Form Factor | OSFP (IHS/Finned Top) to 2x QSFP112 |
| Max. Data Rate | 850Gbps (8x 106.25Gbps) |
| Media | Copper |
| Cable Type | Active Breakout DAC (ACC) |
| Cable Length | 4m (13ft) |
| Wire AWG | 26AWG |
| Minimum Bend Radius | 40mm |
| Max. Power Consumption | 1.5W (OSFP End)0.6W (QSFP112 Per End) |
| Jacket Material | PET |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation Format | 8x100G-PAM4 to Dual 4x100G-PAM4 |
| Application | 800G/400G Ethernet |
| Protocols | CMIS 5.0, IEEE 802.3ck, OSFP MSA Rev5.0, Q112 MSA |
Signal and Lane Configuration
The listed modulation format is 8x100G-PAM4 to Dual 4x100G-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.
Breakout Port Mapping
The OSFP (IHS/Finned Top) to 2x QSFP112 configuration divides the high-speed interface into multiple lower-speed connections. Verify the upstream lane assignment, downstream port speeds and breakout setting on the host before connecting the assembly. Each branch must attach to the correct remote interface.
Length Selection and Installation Planning
The 4m (13ft) length gives MCA7J65-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.
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 40mm; the stated power consumption is 1.5W (OSFP End)0.6W (QSFP112 Per End); the jacket material is PET.
Power and Thermal Planning
The rated power consumption is 1.5W (OSFP End)0.6W (QSFP112 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 40mm. 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/400G Ethernet. Listed interface and protocol references include CMIS 5.0, IEEE 802.3ck, OSFP MSA Rev5.0, Q112 MSA. 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. 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 MCA7J65-N004.
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.
Does this order code cover multiple lengths?
No. MCA7J65-N004 refers here to 4m (13ft). Every other verified length has a separate part number and page in the length list.
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. This page’s fixed configuration is 4m (13ft); another length must be quoted under its corresponding part number.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, while production quantities are confirmed with the order. Delivery can be arranged by courier, air freight or sea freight, and goods may instead be handed to an appointed forwarder or shipped on the customer’s courier account.
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.
