The 400G QSFP-DD to 8 x 50G SFP56 Passive Copper Breakout DAC Cable is a passive breakout dac direct attach copper cable with QSFP-DD to 8x SFP56, supporting 400Gbps links over a length of 0.5m (2ft)~3m (10ft). As a passive cable it draws essentially no power and adds no latency to the link. It is a cost effective, low latency interconnect for 400G Ethernet data center and cloud network environments, and complies with QSFP-DD MSA, SFF-8432, IEEE 802.3bs-400GAUI-8, IEEE802.3cd-50GAUI-1, CMIS 4.0, SFF-8472.
Product Highlights
- QSFP-DD to 8x SFP56
- Data rate: 400Gbps
- Cable type: Passive Breakout DAC
- Length: 0.5m (2ft)~3m (10ft)
- DDM/DOM: Not Supported
Specifications
| Part Number | QDD-400G-8SPCxxx |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD to 8x SFP56 |
| Max. Data Rate | 400Gbps |
| Media | Copper |
| Cable Type | Passive Breakout DAC |
| Minimum Bend Radius | 33.5~39.5mm |
| Wire AWG | 28~30AWG |
| Cable Length | 0.5m (2ft)~3m (10ft) |
| Jacket Material | PVC (OFNR) |
| Max. Power Consumption | 0.1W (QSFP-DD End) 0.1W (SFP56 Per End) |
| Modulation Format | QSFP-DD-8x 50G-PAM4 SFP56-50G-PAM4 |
| DDM/DOM | Not Supported |
| Protocols | QSFP-DD MSA, SFF-8432, IEEE 802.3bs-400GAUI-8, IEEE802.3cd-50GAUI-1, CMIS 4.0, SFF-8472 |
Applications
The 400G QSFP-DD to 8 x 50G SFP56 Passive Copper Breakout DAC Cable is a 400Gbps direct attach copper cable for QSFP-DD to 8x SFP56 connections in 400G Ethernet data center and cloud network environments. This unit is supplied at 0.5m (2ft)~3m (10ft). One port becomes 8x SFP56, a common pattern for connecting newer aggregation ports to an installed base of lower speed equipment. 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 QSFP-DD-8x 50G-PAM4 SFP56-50G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.
Standards and Compatibility
Standards compliance covers QSFP-DD MSA, SFF-8432, IEEE 802.3bs-400GAUI-8, IEEE802.3cd-50GAUI-1, CMIS 4.0, SFF-8472. The unit works in any equipment with a standard QSFP-DD to 8x 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
This model is supplied at 0.5m (2ft)~3m (10ft) under part number QDD-400G-8SPCxxx. Other lengths of the same assembly can be produced on request. Wire gauge: 28~30AWG.
Factory Custom Capability
Working directly with the manufacturer means no middleman limits. We support OEM and ODM projects, custom cable assemblies, alternative packaging and compatibility coding for major equipment vendors, with engineering support from the same team that designs our standard products.
Delivery
Goods are normally sent by courier such as DHL, UPS, FedEx, TNT or EMS; air and sea freight are also available on request. Commonly used items are kept in stock for immediate shipment, and out-of-stock items are usually delivered within a few working days. We can also ship on your courier account or hand goods to your appointed forwarder.
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.
Packing Details
Standard packing is an anti-static bag plus blister protection, with cartons sized to keep products from moving in transit. We apply our standard labels by default; neutral packing or customer-branded labels, part number stickers and serial barcodes are all available on request.