NVIDIA/Mellanox OFL-400G-QDD8xPPC Compatible 400G OSFP 8 x 50G PAM4 RHS/Flat Top to 400G QSFP-DD 8 x 50G PAM4 Ethernet Passive Copper Twinax Cable

Product Highlights

• HT-manufactured compatible alternative for NVIDIA/Mellanox OFL-400G-QDD8xPPC
• 400G aggregate connectivity at 400Gbps
• Interface configuration: OSFP (RHS/Flat Top) to QSFP-DD
• Passive DAC / Copper
• Length configurations covered: 3m (10ft)
• Conductor specification: 28AWG
• Power consumption: 0.1W (OSFP End) 0.1W (QSFP-DD End)
• Operating temperature: 0 to 70°C (32 to 158°F)

Available Lengths and Corresponding Part Numbers

The documented series configuration is 3m (10ft). Use the relevant OEM reference below together with the HT identity and required length when requesting a quotation. If another length carries a different OEM part number, it must be reviewed and ordered as that distinct configuration.

Compatible OEM Part Numbers

• OFL-400G-QDD8xPPC03

Specifications

Applications and Deployment

A passive DAC reduces the connection to one factory-terminated electrical assembly. This is useful where low latency, low interface power and a short managed route matter more than optical reach. Cable gauge, connector construction and host port settings still influence whether the complete link operates reliably. For this series, the listed interface is OSFP (RHS/Flat Top) to QSFP-DD and the aggregate rate is 400G.

NVIDIA/Mellanox Compatibility and Factory Testing

Verification covers the physical connectors, expected host identity and an operating link with available diagnostic indications. We distinguish this complete check from a simple continuity test. Platform model and software release can be reviewed in advance where the installation has strict documentation or change-control requirements. Series-level inspection is followed by the exact length and OEM configuration selected for dispatch. Functional verification includes link establishment and diagnostic indications where the host exposes them.

Cable Construction and Routing

The specification table records the conductor specification is 28AWG; the jacket material is PVC; the minimum bend radius is 40.5mm; the operating temperature is 0 to 70°C (32 to 158°F); the power consumption is 0.1W (OSFP End) 0.1W (QSFP-DD End). Use those values when preparing the rack pathway and receiving checklist. Do not pull a connector by its cable, compress the run under tight ties or force excess length into a sharp coil. Connector protection should remain in place until the assembly is ready for insertion.

Structured Pathways and Serviceability

Treat the direct-attach assembly as part of the permanent pathway plan even when the link is expected to be temporary. Follow the intended horizontal and vertical managers, maintain the specified bend radius and leave service access around both ports. A small, supported service allowance is preferable to excess slack concealed inside a rack or placed under cable-tie pressure. For this series, keep the interface rate, DAC construction and length-specific OEM reference together throughout that review.

Ordering Information

Include the part number, fixed length, quantity and required pathway or rack grouping in the order information. The host model and firmware release are useful for change-controlled deployments. Different lengths should remain separate order lines so delivered labels and packing records agree with the pathway plan. For this series, follow the corresponding length link, quote that exact OEM part number and keep different lengths on separate order lines. HT part number OFL-400G-QDD8xPPC identifies the product family; the linked page provides the final length-specific identity.

Shipping and Lead Time

Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.

Quality Assurance and Packaging

After connector inspection and link verification, the assembly is coiled without tight bends and packed with end protection. Labels can cross-reference the customer cable schedule, OEM part number and length. This supports both receiving checks and later moves, adds or changes. Both connector ends are inspected as part of the complete assembly, and protective packing is selected to avoid tight bends during transport and storage.

Frequently Asked Questions