Designed for 400G Ethernet data center and cloud network environments, the Cisco Compatible 400G QSFP-DD QDD LR8 Optical Transceiver provides 425Gbps throughput in a QSFP-DD form factor. It operates at 1310nm over SMF through a Duplex LC/UPC connector and supports link lengths up to 10km. The module meets IEEE 802.3bs, QSFP-DD MSA, CMIS 4.1 and includes digital diagnostic monitoring for live status readout.
Product Highlights
- QSFP-DD form factor, 425Gbps data rate
- Wavelength: 1310nm
- Connector: Duplex LC/UPC
- Reach: up to 10km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Cisco Compatible | QDD-400G-LR8-S |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD |
| Max. Data Rate | 425Gbps |
| Wavelength | 1310nm |
| Max. Cable Distance | 10km |
| Connector | Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | LWDM EML |
| Receiver Type | PIN |
| TX Power | -2.8~5.3dBm |
| Minimum Receiver Power | -9.1dBm |
| Power Budget | 6.3dB |
| Receiver Overload | 5.3dBm |
| Max. Power Consumption | 10W |
| Extinction Ratio | 3.5dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 8x50G-PAM4 |
| Modulation (Optical) | 8x50G-PAM4 |
| DSP | TX and RX |
| Inbuilt FEC | No |
| Core Size | G.652/9um |
| Packaging Technology | BOX |
| Protocols | IEEE 802.3bs, QSFP-DD MSA, CMIS 4.1 |
Applications
Built for 400G Ethernet data center and cloud network environments, this QSFP-DD module carries 425Gbps over SMF up to 10km per link. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. For networks standardized on Cisco hardware, it is a drop-in equivalent of the QDD-400G-LR8-S.
Standards and Compatibility
On the compatibility side, this unit is the practical equivalent of the Cisco part QDD-400G-LR8-S and works in Cisco systems out of the box. Standards compliance covers IEEE 802.3bs, QSFP-DD MSA, CMIS 4.1.
Ordering Information
Our part number for this module is QDD-LR8-400G. When ordering, just let us know the quantity and whether you need the compatibility coding for a particular switch brand; labeling and packaging can also follow your channel requirements.
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.
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.
Quality Assurance
Before any product leaves our factory it goes through optical performance testing, compatibility verification on real switch platforms and a final visual inspection. Our in-house test lab holds a wide range of current and legacy switches from major brands, so interoperability is proven on the actual equipment your network uses rather than assumed from paper specifications.
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.
