Arista QDD-400G-SR8-C – QSFP-DD SR8 Optical Transceiver
The Arista QDD-400G-SR8-C from Datacom Technologies BD is a high-performance 400 Gigabit optical transceiver designed for short-reach, high-density connectivity over multimode fiber. It is optimized for modern data centers and cloud environments that require reliable, low-latency 400G transmission with Arista QSFP-DD-enabled switching platforms, including color-coded identification for operational simplicity.
Specification Table
| Feature | Details |
|---|
| Product Name | Arista QDD-400G-SR8-C |
| Form Factor | QSFP-DD |
| Data Rate / Capacity | 400Gbps |
| Standard / Protocol | 400GBASE-SR8, IEEE 802.3bs |
| Fiber Type / Interface | Multimode Fiber (MMF) |
| Wavelength / Technology | 850 nm |
| Transmission Distance | Up to 100 m (OM4) / 70 m (OM3) |
| Connector Type | MPO-16 |
| Lane Configuration | 8 × 50G |
| Modulation | PAM4 |
| Compliance | IEEE 802.3bs, RoHS |
| Compatibility | Arista QSFP-DD switches and platforms |
| Application | Short-reach data center networking |
Arista QDD-400G-SR8-C Description
The Arista QDD-400G-SR8-C optical transceiver is engineered to deliver efficient and dependable 400G Ethernet connectivity over multimode fiber using eight 50G PAM4 lanes. Operating at an 850 nm wavelength, it provides excellent signal integrity and consistent performance for short-distance links within dense data center environments.
Its compact QSFP-DD form factor supports high port density while maintaining power efficiency and thermal stability. The “-C” variant includes color-coded identification to simplify installation and cable management in large-scale deployments. Fully tested for interoperability with Arista networking equipment, the SR8-C transceiver offers a scalable and reliable solution for upgrading data center fabrics to 400G speeds.
Key Features
• Supports 400Gbps high-speed optical transmission
• SR8 multimode fiber connectivity for short distances
• 8 × 50G PAM4 lane architecture
• 850 nm wavelength for stable performance
• MPO-16 connector for high-density cabling
• Color-coded identification for easier deployment
• Low power consumption and high reliability
• Optimized for Arista 400G switching platforms
Where It Can Be Used
• Enterprise and hyperscale data centers
• Leaf-spine and aggregation architectures
• Server-to-switch and switch-to-switch links
• Cloud computing and virtualization platforms
• High-performance computing (HPC) environments
• High-density 400G switching deployments
Get in Touch with Datacom Technologies BD
Call/WhatsApp: 01748173213
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