
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.
| 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 |
Network architects choose the Cisco Compatible 400G QSFP-DD QDD LR8 Optical Transceiver for 400G Ethernet data center and cloud network environments: it runs 425Gbps over SMF and reaches 10km. With its Duplex LC/UPC optical interface, the module works directly with the SMF infrastructure already installed in most facilities. For networks standardized on Cisco hardware, it is a drop-in equivalent of the QDD-400G-LR8-S.
This product is designed and tested to comply with IEEE 802.3bs, QSFP-DD MSA, CMIS 4.1. It is interoperable with Cisco equipment and serves as a direct equivalent to the Cisco part number QDD-400G-LR8-S.
Order this product as QDD-LR8-400G. Common models are stocked for fast dispatch. We can supply the module with neutral or customer-branded labels, and compatibility coding for a specific equipment vendor can be added at no extra process step.
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.
We have manufactured fiber optic connectivity products since 1995 and run our own production lines in Shenzhen. Beyond the standard catalog we build to order: special cable lengths, custom connector combinations, vendor-specific compatibility coding and private labeling. Send us your requirement and our engineers will quote a practical solution.
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.
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.