The Arista Compatible 400G QSFP-DD QDD ER4L Optical Transceiver is a QSFP-DD optical transceiver delivering 400Gbps over SMF. Operating at 1310nm with a Duplex LC/UPC interface, it reaches 30km and is compliant with QSFP-DD MSA, CMIS Rev4.0, IEEE 802.3, IEEE 802.3bs, OIF 56G PAM4. Built-in digital diagnostics give real-time access to operating parameters, making the module easy to deploy and maintain in 400G Ethernet data center and cloud network environments.
Product Highlights
- QSFP-DD form factor, 400Gbps data rate
- Wavelength: 1310nm
- Connector: Duplex LC/UPC
- Reach: up to 30km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Part Number | QDD-ER4L-400G |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD |
| Max. Data Rate | 400Gbps |
| Wavelength | 1310nm |
| Max. Cable Distance | 30km |
| Connector | Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | EML |
| Receiver Type | APD |
| TX Power | 0.4~6.5dBm |
| Minimum Receiver Power | -10.1dBm |
| Power Budget | 10.5dB |
| Receiver Overload | -3.4dB |
| Max Power Consumption | 12W |
| Extinction Ratio | 6dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 8x53.125G-PAM4 |
| Modulation (Optical) | 4x106.25G-PAM4 |
| DSP | TX and RX |
| Inbuilt FEC | No |
| Bit Error Ratio (BER) | 2.4E-4 |
| MTBF | 2050000 Hours (@40°C, 60% CL) 818000 Hours (@40°C, 90% CL) 1300000 Hours (@55°C, 60% CL) 519000 Hours (@55°C, 90% CL) |
| Packaging Technology | BOX |
| Application | Data Center, Enterprise Networking, 400G Ethernet |
| Protocols | QSFP-DD MSA, CMIS Rev4.0, IEEE 802.3, IEEE 802.3bs, OIF 56G PAM4 |
Applications
The Arista Compatible 400G QSFP-DD QDD ER4L Optical Transceiver is used in 400G Ethernet data center and cloud network environments, where it provides a 400Gbps link over SMF up to 30km. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. 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 8x53.125G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.
Standards and Compatibility
Compliance: QSFP-DD MSA, CMIS Rev4.0, IEEE 802.3, IEEE 802.3bs, OIF 56G PAM4. 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-ER4L-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.
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.
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.
Shipping and Lead Time
Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.
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.