The Optical Transceiver 100G QSFP28 ER4 Lite is designed to deliver reliable long-reach optical connectivity for high-speed Ethernet transmission networks. Featuring four 25.78Gbps channels and operating across LAN-WDM wavelengths around 1310nm, this QSFP28 module enables efficient 100G data transmission over single-mode fiber for extended-reach applications.
Built with EML transmitters and high-sensitivity APD receivers, the ER4 Lite transceiver provides stable optical performance, strong link budgets, and dependable signal integrity while maintaining low power consumption. With LC connectivity, commercial operating temperature support, and a compact QSFP28 form factor, it is well suited for data center interconnect, metro networks, and other Ethernet transmission scenarios requiring consistent long-distance performance.
Product Type
QSFP28
Form Factor
QSFP28
Data Rate
4*25.78Gbps
Wavelength
1295.56/1300.05/1304.58/1309.14nm
Component
EML+APD
Output Power
-2.5~6.5dBm
Rec. Sens
-18.5dBm
Connector
LC
Case Temp.
C
Reach
40km
Max Power Consumption
4.5W
Application
Transmission
Protocol
Ethernet
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.
