400G QSFP56-DD LR4

Vitex Part #: VD-4CLR4CS-AA

Vitex VD-4CLR4CS-AA is designed for 400G optical connections of up to 10km. The transceiver is a fully integrated optical transceiver modulated using a 4-level pulse amplitude modulation (PAM4) format that transmits at a data rate of 425Gbps over 4 lanes on CWDM wavelength grids, running at 106.25 Gbps each. They are compliant with the QSFP-DD MSA and 400GBASE-LR4-10 standards.

Features
Specifications
Applications
FAQs
Datasheet

Compliant with 400G-LR4-10 optical specifications Compliant with QSFP-DD MSA Compliant with CMIS4.0 Management interface specifications Duplex LC receptacles 4 x 106.25Gbps PAM4 cooled EML 8 x 53.125Gbps PAM4 electrical interface Transmission distance up to 10km Single 3.3V power supply
Power dissipation <8W Commercial operating temperature: 0â„ƒ to +70â„ƒ RoHS Compliant

Form Factor	QSFP-DD
Data Rate	400G
Wavelength	CWDM
Distance	10km
Connector	LC Duplex
Protocol	Ethernet
Temperature	Commercial (0–70°C)

AI Data Centers Data Center Interconnect High Performance Computing (HPC)

Q: Does this 400G LR4 use CWDM or LAN-WDM wavelengths? A: It typically uses the CWDM grid (1271-1331nm) for cost-efficiency over 6-10km.

Q: What is the link budget? A: It supports roughly 6.3dB link budget, suitable for 10km (depending on fiber quality).

Q: Connector type? A: Duplex LC.

Q: Does it require amplification? A: No, it is designed for unamplified point-to-point links up to 10km.

Technical Documentation

Access comprehensive technical specifications, mechanical diagrams, and validation reports.

Download Datasheet PDF

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Every Vitex optical product undergoes optical testing, interoperability validation, and system-level verification to ensure performance, reliability, and long-term availability in production networks.

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