Designed for 400G Ethernet data center and cloud network environments, the Cisco Compatible 400G QSFP-DD QDD DR4 Si Optical Transceiver provides 425Gbps (4x106.25Gb/s) throughput in a QSFP-DD form factor. It operates at 1310nm over SMF through a MPO-12 (APC) connector and supports link lengths up to 500m. The module meets QSFP-DD MSA, IEEE 802.3bs, CMIS 4.1 and includes digital diagnostic monitoring for live status readout.
Product Highlights
- QSFP-DD form factor, 425Gbps (4x106.25Gb/s) data rate
- Wavelength: 1310nm
- Connector: MPO-12 (APC)
- Reach: up to 500m
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Cisco Compatible | QDD-400G-DR4-S |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD |
| Max. Data Rate | 425Gbps (4x106.25Gb/s) |
| Wavelength | 1310nm |
| Max. Cable Distance | 500m |
| Connector | MPO-12 (APC) |
| Media | SMF |
| Transmitter Type | DFB |
| Receiver Type | PIN |
| TX Power | -2.9~4.0dBm |
| Minimum Receiver Power | -5.9dBm |
| Power Budget | 3dB |
| Receiver Overload | 4dBm |
| 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) | 4x100G-PAM4 |
| DSP | TX and RX |
| Host FEC | Supported |
| Protocols | QSFP-DD MSA, IEEE 802.3bs, CMIS 4.1 |
Applications
The Cisco Compatible 400G QSFP-DD QDD DR4 Si Optical Transceiver is used in 400G Ethernet data center and cloud network environments, where it provides a 425Gbps (4x106.25Gb/s) link over SMF up to 500m. With its MPO-12 (APC) optical interface, the module works directly with the SMF infrastructure already installed in most facilities. Compatibility with Cisco systems is verified in our own test lab before shipment, so the unit works out of the box as an equivalent of QDD-400G-DR4-S. The link runs 8x50G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.
Standards and Compatibility
This product is designed and tested to comply with QSFP-DD MSA, IEEE 802.3bs, CMIS 4.1. It is interoperable with Cisco equipment and serves as a direct equivalent to the Cisco part number QDD-400G-DR4-S.
Ordering Information
Order this product as QDD-DR4-400G-SI. 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.
OEM and Custom Orders
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.
Logistics
Our warehouse keeps fast-moving transceivers and cables ready for same-week dispatch. Courier, air freight and sea freight options are all available depending on your budget and schedule, and we consolidate multiple items into one shipment whenever it saves you cost.
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.
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.