• 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-PLR4-S-Arista | 400G QSFP-DD Transceiver, Single-Mode, 10km, MPO-12

QDD-400G-PLR4-S-Arista

Stock Status: Enquire

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Description

The Arista QDD-400G-PLR4-S is a 400GBASE-PLR4 QSFP-DD optical transceiver designed for high-performance data center and enterprise network applications. This module delivers 400 Gigabit Ethernet connectivity over single-mode fiber up to 10 km using an MPO-12/APC connector at 1310nm wavelength. It supports 4x100G breakout mode, enabling flexible connectivity to QSFP28 100G-LR transceivers for scalable network architectures.

Features

Hot-pluggable QSFP-DD form factor for easy installation and replacement without system downtime
- 400GBASE-PLR4 parallel long-reach technology using four 100G PAM4 optical lanes
- High-speed 8x 50Gb/s PAM4 electrical interface compliant with 400GAUI-8
- 4x100G breakout capability for interoperability with QSFP28 100G-LR transceivers
- 1310nm EML laser transmitter with four parallel wavelengths (1271nm, 1291nm, 1311nm, 1331nm)
- MPO-12/APC connector for secure, low-loss parallel fiber connections
- Digital Optical Monitoring (DOM) for comprehensive real-time diagnostics
- Commercial temperature range operation (0°C to 70°C) suitable for most data center environments
- Compliant with QSFP-DD MSA, 100G Lambda MSA, and IEEE 802.3bs/802.3cu standards
- Low-power design with maximum 12W consumption for energy-efficient operation
- RoHS and CE certified for environmental compliance

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-PLR4)
- Wavelength: 1310nm (four parallel lanes at 1271nm, 1291nm, 1311nm, 1331nm nominal)
- Reach: Up to 10km over single-mode fiber (SMF)
- Connector: MPO-12/APC (MTP/MPO-12 angled physical contact)
- Electrical Interface: 8x 50Gb/s PAM4 (400GAUI-8)
- Optical Interface: 4x 100Gb/s PAM4 parallel lanes
- Power Consumption: Maximum 12W
- Operating Temperature: 0°C to 70°C (commercial temperature range)
- Digital Diagnostics Monitoring (DOM): Supported for real-time parameter monitoring
- Breakout Support: 4x 100G-LR QSFP28 transceivers
- Standards Compliance: QSFP-DD MSA, 100G Lambda MSA, IEEE 802.3bs, IEEE 802.3cu (100GBASE-LR1), OIF 56G PAM4

FAQs

Q: What is the maximum transmission distance for the QDD-400G-PLR4-S?
A: This transceiver supports up to 10 km over single-mode fiber using an MPO-12/APC connector at 1310nm wavelength, making it ideal for campus, data center interconnect, and metro applications.

Q: Does this module support breakout configurations?
A: Yes, the QDD-400G-PLR4-S supports 4x100G breakout mode, allowing a single 400G QSFP-DD port to connect to four separate QSFP28 100G-LR transceivers for flexible network topology designs.

Q: Is the QDD-400G-PLR4-S backward compatible with other form factors?
A: QSFP-DD ports are generally backward compatible with QSFP+, QSFP28, and QSFP56 modules depending on the switch platform. However, this specific 400G module requires a QSFP-DD port with 400G capability or breakout support.

Q: What type of fiber cable is required for this transceiver?
A: This module requires single-mode fiber (SMF) cable with an MPO-12/APC connector. The parallel optics design uses four fiber pairs for transmit and receive operations across the 10km distance.

Q: Is Digital Optical Monitoring supported on this module?
A: Yes, the QDD-400G-PLR4-S includes Digital Optical Monitoring (DOM) support, providing real-time access to operating parameters such as optical power, temperature, transmit bias current, and supply voltage for proactive network monitoring.

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