
The NVIDIA InfiniBand Compatible 400G OSFP Passive DAC Flat Top provides a 400Gbps copper connection between OSFP (RHS/Flat Top) to OSFP (RHS/Flat Top) ports with a cable length of 0.5m (2ft). As a passive cable it draws essentially no power and adds no latency to the link. Direct attach copper keeps both latency and power consumption to a minimum, which makes it the economical choice for InfiniBand HDR fabrics, HPC clusters and AI computing networks.
Product Highlights
- OSFP (RHS/Flat Top) to OSFP (RHS/Flat Top)
- Data rate: 400Gbps
- Cable type: Passive Twinax
- Length: 4 factory standard lengths covering 0.5m (2ft) to 2m (7ft)
Specifications
| Part Number | OSFPFL-400G-PC005 |
|---|---|
| Manufacturer | HT |
| Form Factor | OSFP (RHS/Flat Top) to OSFP (RHS/Flat Top) |
| Max. Data Rate | 400Gbps |
| Media | Copper |
| Cable Type | Passive Twinax |
| Cable Length | 0.5m (2ft), 1m (3ft), 1.5m (5ft), 2m (7ft) |
| Wire AWG | 30AWG |
| Minimum Bend Radius | 34.5mm |
| Max. Power Consumption | 0.1W |
| Jacket Material | PVC (OFNR) |
| Commercial Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | OSFP MSA, CMIS Rev4.0, IEEE 802.3cd |
| Modulation Format | 4x 100G-PAM4 |
Applications
Designed for InfiniBand HDR fabrics, HPC clusters and AI computing networks, the NVIDIA InfiniBand Compatible 400G OSFP Passive DAC Flat Top carries 400Gbps between OSFP (RHS/Flat Top) to OSFP (RHS/Flat Top) interfaces. This unit is produced in 4 standard lengths from 0.5m (2ft) to 2m (7ft). The integrated construction removes separate optics from the link budget and reduces the number of failure points in the row. Our factory programs the compatibility coding for your switch brand before shipment and verifies each unit on real host equipment. The link runs 4x 100G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.
Standards and Compatibility
This product is designed and tested to comply with OSFP MSA, CMIS Rev4.0, IEEE 802.3cd. It plugs into any standards-based OSFP (RHS/Flat Top) to OSFP (RHS/Flat Top) port, and compatibility coding for specific switch or router brands can be done in our factory before shipment.
Ordering Information
The factory part number is OSFPFL-400G-PC. This cable is available in 0.5m (2ft), 1m (3ft), 1.5m (5ft) and 2m (7ft). Lengths outside the standard range are made to order in our factory. Wire gauge: 30AWG.
Worldwide Delivery
We ship to customers around the world every week. Express couriers handle most orders door to door in a few days; larger consignments go by air or sea to keep freight costs down. Tracking information is provided for every shipment, and we are flexible on shipping accounts and forwarders.
Reliability Control
From incoming component inspection to final burn-in, quality is controlled at each step of production. Finished units are verified on real networking equipment in our compatibility lab, and test records are kept per batch so that any field question can be traced back quickly.
Packaging
Each unit is sealed in an anti-static bag, cushioned in a blister tray and boxed in an export-grade carton. Outer cartons carry handling marks and can be palletized for air or sea freight. If your project requires retail boxes, barcodes or your own brand on the label, we can arrange that as well.
Custom-made Fiber Products
As a manufacturer serving the fiber optic industry since 1995, we have strong in-house manufacturing and design capability. From early GBIC, Xenpak and X2 modules to today's SFP, SFP+, QSFP, QSFP-DD and OSFP products, we grow together with the industry. OEM and custom-designed transceivers and cables are welcome, and our factory-direct pricing is very competitive compared with online retail stores.



