NVIDIA/Mellanox MCA7J70-N003 Compatible 800G Twin-port OSFP 8 x 100G PAM4 IHS/Finned Top to 4 x 200G OSFP 2 x 100G PAM4 RHS/Flat Top Ethernet Active Copper Breakout Cable, 3m (10ft)
For a direct equipment connection requiring NVIDIA/Mellanox MCA7J70-N003, this page supplies the 3m (10ft) version with OSFP (IHS/Finned Top) to 4x OSFP (RHS/Flat Top). The cable supports 800G operation and eliminates a separate module-and-patch-cord assembly. Installation, maintenance and spare-cable identification are addressed alongside the full technical details.
OEM Part Number: MCA7J70-N003HT Part Number: MCA7J70-N003
Product Highlights
- Compatible alternative to NVIDIA/Mellanox MCA7J70-N003
- 800G connectivity at 850Gbps (8x 106.25Gbps)
- Interface configuration: OSFP (IHS/Finned Top) to 4x OSFP (RHS/Flat Top)
- Fixed length and part number: 3m (10ft), MCA7J70-N003
- Cable construction: Active Breakout DAC (ACC)
- Conductor specification: 30AWG
- Maximum power consumption: 1.7W (800G End)0.3W (200G Per End)
- Minimum bend radius: 23mm
Specifications
| HT Part Number | MCA7J70-N003 |
|---|---|
| NVIDIA/Mellanox Ethernet Compatible | MCA7J70-N003 |
| Manufacturer | HT |
| Form Factor | OSFP (IHS/Finned Top) to 4x OSFP (RHS/Flat Top) |
| Max. Data Rate | 850Gbps (8x 106.25Gbps) |
| Media | Copper |
| Cable Type | Active Breakout DAC (ACC) |
| Cable Length | 3m (10ft) |
| Wire AWG | 30AWG |
| Minimum Bend Radius | 23mm |
| Max. Power Consumption | 1.7W (800G End)0.3W (200G Per End) |
| Jacket Material | PET |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation Format | 8x100G-PAM4 to Quad 2x100G-PAM4 |
| Application | 800G/200G Ethernet |
| Protocols | CMIS 5.0, IEEE 802.3ck, OSFP MSA Rev 5.0 |
Signal and Lane Configuration
The listed modulation format is 8x100G-PAM4 to Quad 2x100G-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.
Position Within the Length Range
MCA7J70-N003 occupies the middle of this family between MCA7J70-N002 at 2m (7ft) and MCA7J70-N004 at 4m (13ft). It adds 1m 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.
Field Installation and Maintenance
Inspect the route and both connectors before installation, then support the cable without pulling on either connector housing. During maintenance, release the latch properly rather than using the cable as a handle. Keep protection on unused ends, and if the assembly is removed for later use, coil it loosely and record its part number so the same length can be returned to service. For this assembly, the listed conductor specification is 30AWG; the minimum bend radius is 23mm; the stated power consumption is 1.7W (800G End)0.3W (200G Per End); the jacket material is PET.
Power and Thermal Planning
The rated power consumption is 1.7W (800G End)0.3W (200G 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 23mm. 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/200G Ethernet. Listed interface and protocol references include CMIS 5.0, IEEE 802.3ck, OSFP MSA Rev 5.0. Confirm that the host firmware and port configuration support the same operating mode.
Breakout Port Mapping
The OSFP (IHS/Finned Top) to 4x OSFP (RHS/Flat Top) 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
At 3m (10ft), this assembly can bridge non-aligned ports or adjacent racks while remaining a single direct-attach link. Support longer horizontal runs with suitable cable management and preserve space for cooling and future maintenance.
Quality Assurance and Packaging
The cable and both connectors are inspected before a functional link test. Connector protection and bend-safe packing reduce handling damage during transport and storage. Customer or site labels can be added for field inventories, with different lengths separated to simplify issue and return of spare assemblies. Volume orders can include customer references on the labels and carton list.
NVIDIA/Mellanox Compatibility and Factory Testing
A field-ready cable needs both correct identification and a stable operating link. Our pre-packing check therefore includes the connectors, host recognition and link behavior. For equipment with uncertain revision history, providing the host model and software release helps identify compatibility requirements before the assembly reaches the installation site. Where supported by the host, link stability and diagnostic indications are reviewed together with the established link.
Frequently Asked Questions
Is this an original NVIDIA/Mellanox cable?
No. It is an HT-manufactured compatible alternative for equipment that specifies NVIDIA/Mellanox MCA7J70-N003.
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. MCA7J70-N003 refers here to 3m (10ft). 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.
Ordering Information
Request the cable by its exact part number and length, and state the equipment model if compatibility confirmation is needed. Site orders can list quantities by rack or installation team. Any requested label should retain the part number so a removed or spare cable can still be identified accurately. This page’s fixed configuration is 3m (10ft); 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.
