NVIDIA/Mellanox MCP7Y00-N00A Compatible 800G OSFP 8 x 100G PAM4 IHS/Finned Top to 2 x 400G OSFP 4 x 100G PAM4 RHS/Flat Top InfiniBand NDR Passive Copper Breakout Cable, 0.5m (2ft)
The MCP7Y00-N00A compatible DAC cable provides 800G connectivity for NVIDIA/Mellanox equipment over a fixed 0.5m (2ft) assembly. Both ends use the stated 800G OSFP (IHS/Finned Top) to 2x 400G OSFP (RHS/Flat Top) arrangement. It is inspected and functionally checked before packing, with handling guidance designed to protect the connectors during installation and later service.
OEM Part Number: MCP7Y00-N00AHT Part Number: MCP7Y00-N00A
Product Highlights
- Compatible alternative to NVIDIA/Mellanox MCP7Y00-N00A
- 800G connectivity at 800Gbps
- Interface configuration: 800G OSFP (IHS/Finned Top) to 2x 400G OSFP (RHS/Flat Top)
- Fixed length and part number: 0.5m (2ft), MCP7Y00-N00A
- Cable construction: Passive Breakout DAC
- Conductor specification: 30AWG
- Maximum power consumption: 0.1W @800G, 0.1W @400G
- Minimum bend radius: 58mm
Specifications
| HT Part Number | MCP7Y00-N00A |
|---|---|
| NVIDIA/Mellanox InfiniBand Compatible | MCP7Y00-N00A |
| Manufacturer | HT |
| Form Factor | 800G OSFP (IHS/Finned Top) to 2x 400G OSFP (RHS/Flat Top) |
| Max. Data Rate | 800Gbps |
| Media | Copper |
| Cable Type | Passive Breakout DAC |
| Minimum Bend Radius | 58mm |
| Max. Power Consumption | 0.1W @800G, 0.1W @400G |
| Cable Length | 0.5m (2ft) |
| Wire AWG | 30AWG |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Jacket Material | PET |
| Modulation Format | 8x 100G-PAM4 to Dual 4x 100G-PAM4 |
| Application | 800G InfiniBand NDR |
| Protocols | OSFP MSA Rev5.0, IEEE 802.3ck, CMIS 4.0 |
Signal and Lane Configuration
The listed modulation format is 8x 100G-PAM4 to Dual 4x 100G-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.
Cable Construction and Routing
This assembly uses 30AWG conductors, PET jacket, minimum bend radius 58mm. 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 NDR. Listed interface and protocol references include OSFP MSA Rev5.0, IEEE 802.3ck, CMIS 4.0. Confirm that the host firmware and port configuration support the same operating mode.
Breakout Port Mapping
The 800G OSFP (IHS/Finned Top) to 2x 400G 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.
Passive Copper Operation
A passive DAC has no separate optical conversion stage. Its low-power, low-latency operation is useful for short equipment links, but the assembly must remain within the length and signaling mode accepted by both hosts.
Length Selection and Installation Planning
The 0.5m (2ft) length is suited to closely aligned ports where excessive slack would obstruct airflow or complicate dressing. Measure the actual port-to-port path before choosing MCP7Y00-N00A; even a short assembly must retain the specified bend radius and should never be pulled tight behind the equipment.
Position Within the Length Range
MCP7Y00-N00A is the shortest of 4 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 MCP7Y00-N001 at 1m (3ft), adding 0.5m for a less direct routing path; selecting it unnecessarily would leave more cable to dress.
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 58mm; the stated power consumption is 0.1W @800G, 0.1W @400G; the jacket material is PET.
Power and Thermal Planning
The rated power consumption is 0.1W @800G, 0.1W @400G. 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.
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. Neutral packaging and customer-specific packing documentation are available on request.
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. 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 MCP7Y00-N00A.
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. MCP7Y00-N00A refers here to 0.5m (2ft). Every other verified length has a separate part number and page in the length list.
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 0.5m (2ft); 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.
