
The 400G QSFP-DD 8x 50G PAM4 to 8x 50G SFP56 50G PAM4 Breakout AOC is an active optical cable assembly with QSFP-DD to 8x 50G SFP56, carrying 425Gbps (8x 53.125GGbps) over OM3 at 850nm. Factory terminated and tested as a complete link, it offers a lighter and more flexible alternative to discrete transceivers with patch cords for 400G Ethernet data center and cloud network environments. The standard length range runs from 1m (3ft) to 70m (230ft).
Product Highlights
- QSFP-DD to 8x 50G SFP56
- Data rate: 425Gbps (8x 53.125GGbps)
- Cable type: OM3
- Length: 12 factory standard lengths covering 1m (3ft) to 70m (230ft)
- Wavelength: 850nm
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Part Number | QDD-400G-8SAO03 |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD to 8x 50G SFP56 |
| Max. Data Rate | 425Gbps (8x 53.125GGbps) |
| Cable Length | 1m (3ft), 2m (7ft), 3m (10ft), 5m (16ft), 7m (23ft), 10m (33ft), 15m (49ft), 20m (66ft), 25m (82ft), 30m (98ft), 50m (164ft), 70m (230ft) |
| Cable Type | OM3 |
| Minimum Bend Radius | 30mm |
| Max. Power Consumption | 10W (QSFP-DD End) 3W (SFP56 Per End) |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| Modulation Format | PAM4 |
| Wavelength | 850nm |
| Jacket Material | OFNP |
| BER | 2.4E-4 |
| Inbuilt FEC | No |
| Operating Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | QSFP-DD MSA, SFP56 MSA, IEEE 802.3cd |
Applications
The 400G QSFP-DD 8x 50G PAM4 to 8x 50G SFP56 50G PAM4 Breakout AOC connects QSFP-DD to 8x 50G SFP56 ports at 425Gbps (8x 53.125GGbps) in 400G Ethernet data center and cloud network environments. This unit is produced in 12 standard lengths from 1m (3ft) to 70m (230ft). By fanning one port out to 8x 50G SFP56, it doubles or quadruples the number of endpoints served per switch port and keeps the cabling plant simple. If your project needs a specific vendor coding or custom label, our production line handles it as a routine step before packing. The link runs PAM4 modulation, which keeps it aligned with current 400G switch silicon.
Standards and Compatibility
Standards compliance covers QSFP-DD MSA, SFP56 MSA, IEEE 802.3cd. The unit works in any equipment with a standard QSFP-DD to 8x 50G SFP56 interface; if your network uses a specific vendor's coding, tell us the switch model and we will program and verify it before delivery.
Ordering Information
The factory part number is QDD-400G-8SAO. This cable is available in 1m (3ft), 2m (7ft), 3m (10ft), 5m (16ft), 7m (23ft), 10m (33ft), 15m (49ft), 20m (66ft), 25m (82ft), 30m (98ft), 50m (164ft) and 70m (230ft). Lengths outside the standard range are made to order in our factory. Volume pricing is available for project quantities.
Built to Your Spec
Our product line has grown with the industry for three decades, from GBIC-era modules to today's 800G and 1.6T interconnects. If the exact configuration you need is not listed, we can usually build it: custom lengths, mixed connector breakouts, OEM branding and project-specific firmware coding are all supported.
How We Ship
Most orders travel by international express and arrive within days; palletized freight by air or sea is used for volume orders. If you prefer, we ship on your DHL, UPS or FedEx account, or deliver to your appointed agent in China for onward consolidation.
Quality and Testing
Every unit we ship is tested in our own test bed on mainstream switch and transport platforms before packing. Our test center has been fully upgraded, which sets us apart from other third party product providers: 10G, 40G, 100G, 200G and 400G transceivers and direct attach cables are verified on the latest top brand equipment, including selected original switches that can hardly be found elsewhere.
How We Pack
Transceivers and cables are individually protected against static and dust, then consolidated into sturdy cartons suitable for international courier shipment. For larger orders we shrink-wrap and strap cartons onto pallets. Tell us your warehouse or retail requirements and we will pack accordingly.



