• Silver-colored arista H-D400-4Q100-1M sfp+ transceiver modules with blue handles and metallic connectors for 400g active DAC
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Arista

Arista QDD-400G-SRBD-Arista | 400G QSFP-DD Transceiver, 850nm/910nm, 100m OM4

QDD-400G-SRBD-Arista

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Description

The Arista QDD-400G-SRBD is a 400GBASE-SR4.2 QSFP-DD transceiver delivering 400 Gbps bandwidth over multimode fiber using bidirectional PAM4 technology. Supporting up to 100m on OM4 and 70m on OM3 fiber with an MPO-12 connector, it is optimized for high-density data center and cloud interconnects. Software-configurable to breakout into 4x 100GBASE-BIDI or 4x 100G-SR1.2 links, it offers flexible deployment for modern Arista switching platforms.

Features

400GBASE-SR4.2 compliant QSFP-DD form factor for high-density port configurations
- Bidirectional PAM4 modulation using 850nm/910nm wavelengths for efficient bandwidth utilization
- Hot-pluggable design for easy installation, upgrades, and maintenance without downtime
- Software-configurable breakout support for 4x 100G-BIDI or 4x 100G-SR1.2 links
- Forward Error Correction (FEC) supported on the host platform for enhanced signal integrity
- MPO-12 UPC connector for simplified cabling in parallel multimode fiber infrastructures
- Low latency and high throughput optimized for data center spine-leaf architectures
- Fully compliant with IEEE 802.3bm and 400GAUI-8/CEI-56G-VSR-PAM4 standards
- Cost-effective short-reach solution for 400G server-to-switch and switch-to-switch connectivity
- Commercial temperature range (0°C to 70°C) suitable for standard data center environments

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Form Factor: QSFP-DD (Quad Small Form-factor Pluggable Double Density)
- Data Rate: 400 Gbps (400GBASE-SR4.2)
- Wavelength: 850nm / 910nm bidirectional PAM4
- Connector Type: MPO-12 UPC
- Fiber Type: Multimode (MMF)
- Maximum Distance: 100m over OM4, 70m over OM3
- Breakout Support: Software-configurable to 4x 100GBASE-BIDI (100G-SRBD) or 4x 100G-SR1.2
- Standards Compliance: IEEE 802.3bm, 400GAUI-8, CEI-56G-VSR-PAM4
- Power Consumption: Typical QSFP-DD specification (hot-pluggable)
- Operating Temperature: Commercial (0°C to 70°C)

FAQs

Q: What is the maximum transmission distance for the QDD-400G-SRBD?
A: The transceiver supports up to 100 meters over OM4 multimode fiber and 70 meters over OM3 multimode fiber, making it ideal for short-reach data center and intra-rack connections.

Q: Can this transceiver be used in breakout configurations?
A: Yes, the QDD-400G-SRBD is software-configurable to support 400G point-to-point links or breakout into four 100G links using either 100GBASE-BIDI (100G-SRBD) or 100G-SR1.2 modes, providing flexible deployment options.

Q: Is the QDD-400G-SRBD compatible with non-Arista equipment?
A: The transceiver is designed for Arista switches and routers but complies with IEEE 802.3bm standards. Compatibility with third-party equipment depends on adherence to 400GBASE-SR4.2 specifications and FEC requirements on the host platform.

Q: What type of fiber cable is required for this transceiver?
A: An MPO-12 UPC multimode fiber cable is required. The transceiver uses bidirectional wavelengths (850nm/910nm) over four parallel fiber pairs for 400G transmission or breakout configurations.

Q: Which Arista platforms support the QDD-400G-SRBD?
A: The transceiver is supported on Arista QSFP-DD platforms running EOS 4.30.2 or later. Refer to Arista's transceiver compatibility guide and platform datasheets for specific switch models and airflow requirements.

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