NVIDIA/Mellanox MCA4J80-N001 Compatible 800G Twin-port OSFP 8 x 100G PAM4 IHS/Finned Top Ethernet Active Copper Twinax Cable, 1m (3ft)
The MCA4J80-N001 compatible assembly is intended for NVIDIA/Mellanox equipment that requires a 800G direct-attached connection. This version is specifically 1m (3ft), with OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top) and its own order reference. Exact length pages and equivalent brand references are linked to make multi-product procurement easier to verify.
OEM Part Number: MCA4J80-N001HT Part Number: MCA4J80-N001
Product Highlights
- Compatible alternative to NVIDIA/Mellanox MCA4J80-N001
- 800G connectivity at 850Gbps (8x 106.25Gbps)
- Interface configuration: OSFP (IHS/Finned Top) to OSFP (IHS/Finned Top)
- Fixed length and part number: 1m (3ft), MCA4J80-N001
- 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-N001 |
|---|---|
| NVIDIA/Mellanox Ethernet Compatible | MCA4J80-N001 |
| 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 | 1m (3ft) |
| 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 Ethernet |
| 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
At 1m (3ft), MCA4J80-N001 is a practical choice for direct connections within one rack. Route the cable along the intended management path rather than pulling it diagonally across adjacent connectors, and leave enough clearance for insertion, removal and front-panel airflow.
Position Within the Length Range
MCA4J80-N001 is the shortest of 2 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-N003 at 3m (10ft), adding 2m for a less direct routing path; selecting it unnecessarily would leave more cable to dress.
Procurement and Port-Mapping Review
A useful purchase order should identify the host platform, the expected OEM code and the exact cable length as separate pieces of information. This prevents a physically similar assembly from being substituted when the port identification or reach is different. For mixed-length installations, prepare one order line per part number and reconcile each delivered cable with its intended pair of ports. 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 Ethernet. 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
Our procurement-oriented compatibility check begins with the OEM reference and ends with a live host link. We record the physical length separately from the identification configuration, so the cable supplied for this page remains the stated version rather than a generic length substitute. Both connectors are examined before the operating test, which includes link stability and diagnostic indications.
Ordering Information
For a clear bill of materials, quote the OEM reference, HT part number, length and quantity on the same line. Add the switch or server model and software release when a pre-order review is required; project labels can repeat those details for receiving and installation teams. This page’s fixed configuration is 1m (3ft); another length must be quoted under its corresponding part number.
Quality Assurance and Packaging
Before packing, the assembly is checked for connector condition, identification and link operation. Cables for multi-line orders can be labelled and grouped by part number, making it easier to match each length to the procurement record without opening every protective bag. Standard protective packing is used by default, with project documentation arranged when requested.
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-N001.
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.
Will any matching connector operate at the same speed?
Not necessarily. Both hosts must support the stated rate, identification, lane mapping and any required breakout configuration; mechanical compatibility alone is insufficient.
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.