400G QSFP56-DD FR4

Vitex Part #: VD-4CFR4CS-AA

Vitex VD-4CFR4CS-AA is designed for 400G optical connections of up to 2km. 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-FR4 standards.

Features
Specifications
Applications
FAQs
Datasheet

Compliant with IEEE Std 802.3cu 400GBASE-FR4 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 2km Single 3.3V power supply
Power consumption <8W Commercial operating temperature:0â„ƒ to +70â„ƒ RoHS Compliant

Form Factor	QSFP-DD
Data Rate	400G
Wavelength	CWDM
Distance	2km
Connector	LC Duplex
Protocol	Ethernet
Temperature	Commercial (0–70°C)

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

Q: Is this 400G FR4 compatible with 100G CWDM4? A: No, 400G FR4 uses 100G PAM4 per lane, while 100G CWDM4 uses 25G NRZ. They are not directly compatible.

Q: What connector does it use? A: Standard Duplex LC, making it easy to use with existing fiber plant.

Q: What is the reach? A: Up to 2km on Single Mode Fiber.

Q: Is it suitable for Data Center Interconnect (DCI)? A: Yes, for short-reach campus DCI applications under 2km.

Technical Documentation

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

Download Datasheet PDF

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Built For Real Deployment Environments

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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