400G QSFP-DD 8x 50G PAM4 to 4x 100G QSFP56 2x 50G PAM4 Active Breakout DAC Cable
For short reach 400Gb/s links in 400G Ethernet data center and cloud network environments, the 400G QSFP-DD 8x 50G PAM4 to 4x 100G QSFP56 2x 50G PAM4 Active Breakout DAC Cable offers a factory terminated active twinax assembly with QSFP-DD to 4x QSFP56 connectors and a length of 5m. Active electronics inside the connectors extend the usable reach compared with passive copper while keeping power draw low. The cable meets QSFP-DD MSA SFF-8679 SFF-8636.
Product Highlights
- QSFP-DD to 4x QSFP56
- Data rate: 400Gb/s
- Cable type: Active Twinax
- Length: 3 standard length options (3m (10ft) to 5m (16ft))
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Part Number | QDD-400G-4QAC05 |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD to 4x QSFP56 |
| Max Data Rate | 400Gb/s |
| Cable Length | 3m (10ft), 4m (13ft), 5m (16ft) |
| Cable Type | Active Twinax |
| Minimum Bend Radius | 80mm |
| Wire AWG | 28 AWG |
| Jacket Material | PVC |
| Power Consumption | ＜0.1W |
| Modulation Format | PAM4 |
| Inbuilt FEC | No |
| Operating Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | QSFP-DD MSA SFF-8679 SFF-8636 |
Applications
In 400G Ethernet data center and cloud network environments, the 400G QSFP-DD 8x 50G PAM4 to 4x 100G QSFP56 2x 50G PAM4 Active Breakout DAC Cable provides a factory terminated 400Gb/s link between QSFP-DD to 4x QSFP56 ports. This unit is made in 3 standard lengths from 3m (10ft) to 5m (16ft). The breakout design lets one high speed port feed 4x QSFP56, which raises port utilization and simplifies cabling in dense rows. 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
Compliance: QSFP-DD MSA SFF-8679 SFF-8636. Every unit's EEPROM coding and link behavior are verified on real host equipment in our lab, so what arrives at your site is ready to use.
Ordering Information
The part number for this assembly is QDD-400G-4QAC. We offer this cable in 3m (10ft), 4m (13ft) and 5m (16ft). Other lengths can be custom manufactured on request. Wire gauge: 28 AWG. Samples for testing can be arranged before bulk orders.
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.
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.
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.
Our Testing Process
Production samples and every outgoing batch pass through bit-error-rate measurement, temperature verification and plug-in compatibility checks on mainstream switches and routers. Because we are the manufacturer, any issue found in testing is fed back to the production line immediately instead of being passed on to customers.
