AristaArista Compatible 400G QSFP-DD QDD LR4 Optical Transceiver
Designed for 400G Ethernet data center and cloud network environments, the Arista Compatible 400G QSFP-DD QDD LR4 Optical Transceiver provides 425Gbps (4x 106.25Gbps) throughput in a QSFP-DD form factor. It operates at 1271nm, 1291nm, 1311nm, and 1331nm over SMF through a Duplex LC/UPC connector and supports link lengths up to 10km. The module meets QSFP-DD MSA HW Rev 5.1, QSFP-DD, CMIS Rev 5.0, IEEE 802.3cu, 100G Lambda MSA and includes digital diagnostic monitoring for live status readout.
Product Highlights
- QSFP-DD form factor, 425Gbps (4x 106.25Gbps) data rate
- Wavelength: 1271nm, 1291nm, 1311nm, and 1331nm
- Connector: Duplex LC/UPC
- Reach: up to 10km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Arista Networks Compatible | QDD-400G-LR4 |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD |
| Max. Data Rate | 425Gbps (4x 106.25Gbps) |
| Wavelength | 1271nm, 1291nm, 1311nm, and 1331nm |
| Max. Cable Distance | 10km |
| Connector | Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | CWDM EML |
| Receiver Type | PIN |
| TX Power | -2.7~5.1dBm |
| Minimum Receiver Power | -9.0dBm |
| Power Budget | 6.3dB |
| Receiver Overload | 5.1dBm |
| Max. Power Consumption | 9W |
| 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 |
| CDR (Clock and Data Recovery) | TX & RX Built-in DSP |
| Inbuilt FEC | No |
| Core Size | G.652/9um |
| Packaging Technology | COB (Chip on Board) Packaging |
| Protocols | QSFP-DD MSA HW Rev 5.1, QSFP-DD, CMIS Rev 5.0, IEEE 802.3cu, 100G Lambda MSA |
Applications
In 400G Ethernet data center and cloud network environments, the Arista Compatible 400G QSFP-DD QDD LR4 Optical Transceiver delivers 425Gbps (4x 106.25Gbps) transmission over SMF with a reach of 10km. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. It is interoperable with Arista Networks platforms and replaces the Arista Networks part QDD-400G-LR4 directly. The link runs 8x50G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.
Standards and Compatibility
Compliance: QSFP-DD MSA HW Rev 5.1, QSFP-DD, CMIS Rev 5.0, IEEE 802.3cu, 100G Lambda MSA. For projects standardized on Arista Networks hardware, this product replaces the QDD-400G-LR4 directly, with identical fit and function. 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
Order this product as QDD-LR4-400G. 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.
Custom-made Fiber Products
As a manufacturer serving the fiber optic industry since 1995, we have strong in-house manufacturing and design capability. From early GBIC, Xenpak and X2 modules to today's SFP, SFP+, QSFP, QSFP-DD and OSFP products, we grow together with the industry. OEM and custom-designed transceivers and cables are welcome, and our factory-direct pricing is very competitive compared with online retail stores.
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.
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 Options
Default packaging is simple and protective: sealed bag, blister tray, export carton. For OEM customers we also offer white-label packing, custom printed boxes and per-unit labeling with your own part numbers, so the goods can go straight into your sales channel.
