AOC 400G QSFP56-DD to 4x 100G QSFP56 PAM4 breakout

Vitex Part #: V4C-D4QyyyC-AA

The V4C-D4QyyyC-AA is a 400G QSFP56-DD to 4x 100G QSFP56 Active Optical Cable (AOC) that supports data rates up to 53Gbps per channel using PAM4 modulation. It features a 400GAUI-8 electrical interface on the QSFP-DD end and a 200GAUI-4 electrical interface on each of the four QSFP56 ends. The AOC incorporates integrated 850nm VCSEL and PD arrays within its hot-pluggable QSFP-DD and QSFP56 form factors. It has a maximum power consumption of 4.5W for the QSFP-DD end and 3.5W for each QSFP56 end and operates on a single 3.3V power supply.

Features
Specifications
Applications
FAQs
Datasheet

Up to 53Gbps data rate per channel by PAM4 modulation 400GAUI-8 electrical interface for QSFP-DD end 200GAUI-4 electrical interface for QSFP end Integrated 850nm VCSEL array and PD array Hot-pluggable
QSFP-DD form factor and QSFP56 form factor Compliant to QSFP-DD HW Rev6.2 and
QSFP MSA Supported CMIS 4.0 for QSFP-DD end Supported CMIS 4.0 or SFF 8636 for QSFP end
Maximum power consumption 4.5W for QSFP-DD end and 3.5W for QSFP end Single 3.3V power supply
Case operating temperature 0°C to 70°C
Class 1 laser
RoHS compliant

Category	DACs/AECs/ACCs
Form Factor	QSFP-DD
Data Rate	400G
Wavelength	850nm
Distance	500m
Connector	LC Duplex
Cable Length	Up to 3m
Protocol	Ethernet
Temperature	Commercial (0–70°C)
Extender Type	Cable

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

Q: What data rate does this AOC support?
A: This active optical cable supports 400G data rate using the QSFP-DD form factor.

Q: What lengths are available?
A: This AOC is available in lengths up to <100m. Contact Vitex for custom length options.

Q: What is the advantage of an AOC over a passive copper cable?
A: AOCs offer significantly longer reach than passive copper DACs, lower weight, better EMI immunity, and lower power consumption at longer distances — ideal for rack-to-rack or inter-row connections in data centers.

Q: What applications is this AOC suited for?
A: It is designed for AI Data Centers, Data Center Interconnect, High Performance Computing (HPC) applications.

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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