400G QSFP-DD FR4: A Core Tool for High-Speed Optical Communication
Release date:Jul 18,2025

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In the digital age, the speed and stability of data transmission have become the cornerstone supporting the development of various industries. As a professional optical transceiver manufacturer, UNIVISO has been dedicated to the design, research and development, production, and distribution of optical transceivers since its establishment in 2011, striving to meet customers' diverse needs in the field of optical communication. Its product range covers a wide speed range from 155Mbps to 400Gbps, including various types such as QSFP-DD, CFP2, and QSFP+, which are widely used in fiber channels, Ethernet, data centers, and other fields. Among them, the 400G QSFP-DD FR4 stands out as an excellent product.


The 400G QSFP-DD FR4 boasts excellent performance parameters, easily meeting the requirements of high-speed data transmission. It supports the 400GBASE-FR4 standard, with a lane bit rate of 106.25 Gb/s and adopts the PAM4 modulation method, enabling it to achieve a maximum data rate of 425Gbps (4x 106.25Gbps). Meanwhile, it features an 8x53.125Gb/s PAM4 electrical interface (400GAUI-8), laying a solid foundation for high-speed data transmission.


In terms of transmission capability, this product performs outstandingly. It can achieve a transmission distance of up to 2km on single-mode fiber (SMF) and adopts a CWDM4 EML laser transmitter and PIN receiver, ensuring the stability and reliability of data transmission. It uses the QSFP-DD MSA package and is equipped with a duplex LC connector, which not only has a compact structure but also ensures good connection performance.


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In addition, the 400G QSFP-DD FR4 comes with a range of practical functions. It supports hot-swapping, facilitating installation and replacement for users. It integrates a digital diagnostic monitoring (DDM/DOM) function, allowing users to monitor the module's operating status in real-time through the I2C interface and promptly identify and resolve potential issues. In terms of power supply, it uses a single +3.3V power supply with a maximum power consumption of 12W, achieving reasonable energy consumption control. Its operating temperature range is 0 to +70°C, enabling it to adapt to different working scenarios. Moreover, the product complies with the 802.3cu and QSFP-DD MSA hardware standards, as well as the EU Directive 2015/863/EU, ensuring reliable quality, and it comes with a 3-year warranty period.


Thanks to these excellent characteristics, the 400G QSFP-DD FR4 has a wide range of application scenarios. In 400GBASE-FR4 and 400G Ethernet, it can efficiently undertake data transmission tasks. In the fields of data centers and cloud applications, in the face of the demand for rapid processing and transmission of massive amounts of data, it can also handle it with ease, providing strong support for the efficient operation of data centers and the smooth development of cloud computing.


UNIVISO ensures the quality of each product with its strong R&D capabilities, strict quality control processes, and rich production experience. The 400G QSFP-DD FR4 not only embodies UNIVISO's technical strength but also practices its philosophy of "Quality First, Service Supreme, Pragmatism and Innovation, Continuous Improvement". Whether in the domestic market or international markets such as Asia, Europe, and the Americas, UNIVISO's products have won customers' recognition. It is believed that with the continuous development of optical communication technology, the 400G QSFP-DD FR4 will play an important role in more fields and contribute to the progress of the global optical communication industry.


Univiso ' s transceivers (SFPs) are designed to support multiple networks.

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