ATOP 400G SR8 QSFP-DD transceiver is high-quality 400G SR8 module designed for use in 400 Gigabit Ethernet links over multimode fiber. It enables a dense-port and high-throughput solution with its compact size and low power consumption. It can be used in various network applications, such as Internet protocol switches and routers. The maximum transmission distance is 100m on OM4 MMF. It is fully compliant with QSFP-DD MSA. Digital diagnostics functions are available via the I2C interface, as specified by the QSFP-DD MSA.
With integrated drivers, 400G QSFP-DD SR8 minimizes the IC count, allowing the optical chip to be positioned further from high-temperature, high-power ICs. This ensures that the optical chip can be up to 33.56mm away from the DSP center, reducing the LD chip temperature by 10-20 degrees during extended use in high-temperature conditions. This not only guarantees a longer service life but also enhances the reliability of optical chips and 400G QSFP-DD SR8 optical transceivers.
Product Type
SR8
Form Factor
QSFP-DD
Data Rate
8*53.125Gbps
Wavelength
850nm
Component
VCSEL+PIN
Output Power
-6.5~4dBm
Rec. Sens
-6.5dBm
Connector
MPO-16
Case Temp.
C
Reach
70m(OM3)/100m(OM4/OM5)
Max Power Consumption
8W
Application
Data Center
Protocol
Ethernet, IB
Built for Deployment, Not Just Specification
ATOP products are engineered for real-world network environments where performance, compatibility, and long-term reliability matter.
Each product is designed, manufactured, and validated within ATOP’s factory-direct production ecosystem, ensuring consistency across batches, predictable availability, and dependable operation beyond initial deployment.
Compatibility & Ongoing Validation
This product is validated for interoperability with mainstream platforms and undergoes continuous review across firmware updates and production cycles.
Compatibility at ATOP is not a one-time certification. It is actively maintained to reduce deployment risk, prevent post-installation issues, and support stable operation as networks evolve.
Supply, Scale & Lifecycle Assurance
As a manufacturer, ATOP controls the full lifecycle of this product, from component sourcing and assembly through testing, traceability, and volume delivery.
Consistent performance across production runs
Predictable lead times and scalable supply
Long-term availability aligned with customer roadmaps
Traceability, Compliance & Sustainability
Each ATOP product is backed by full production traceability and compliance documentation, including ESG and regulatory requirements where applicable.
Factory-level visibility enables accurate reporting, audit readiness, and confidence in sourcing, without retroactive data collection or assumptions.
Part of a Broader Portfolio
This product represents one configuration within ATOP’s wider portfolio of optical transceivers and high-speed interconnect solutions. Variants, adjacent specifications, and alternative form factors may be available based on platform, reach, or deployment requirements.
If you don’t see an exact match, ATOP can advise on equivalent or optimized alternatives.
