400GBASE-SR8 OSFP PAM4 Optical Transceiver
(MMF, 850 nm, 100 m, MPO-16 APC, DOM, Finned Top)
The 400GBASE-SR8 OSFP optical transceiver module is designed to deliver 400 Gigabit Ethernet connectivity over distances of up to 100 meters on OM4 multimode fiber (MMF) using an 850 nm wavelength. The module utilizes a single MPO-16 APC connector and supports parallel optical transmission based on PAM4 modulation.
Fully compliant with OSFP MSA, CMIS 4.1, and IEEE 802.3cd / 400GAUI-8 standards, this transceiver ensures broad interoperability across modern 400G network platforms. Integrated Digital Optical Monitoring (DOM/DDM) provides real-time access to operating parameters such as optical power, temperature, and voltage.
Optimized for low power consumption, high reliability, and efficient thermal management, the Finned Top OSFP design makes this module ideal for data centers, cloud infrastructure, and high-density Ethernet deployments. In addition to native 400GBASE-SR8, the module also supports 8 × 50G-SR breakout connectivity.
Technical Specifications
• Form Factor: Single-port OSFP (Finned Top)
• Maximum Data Rate: 425 Gbps
• Modulation (Electrical): 8 × 50G PAM4
• Modulation (Optical): 8 × 50G PAM4
• Wavelength: 850 nm
• Maximum Transmission Distance:
o 100 m over OM4 MMF
• Fiber Type: Multimode Fiber (MMF)
• Core Size: 50 µm
• Connector Type: MPO-16 APC
Optical Performance
• Transmitter Type: VCSEL
• Receiver Type: PIN
• Transmit Power (Tx): –6.5 to +4.0 dBm
• Minimum Receiver Sensitivity (Rx): –8.4 dBm
• Receiver Overload: +4.0 dBm
• Optical Power Budget: 1.9 dB
• Extinction Ratio: = 3.0 dB
Electrical & Functional Features
• Maximum Power Consumption: = 10 W
• CDR (Clock and Data Recovery): Integrated TX & RX
• Digital Diagnostics (DOM/DDM): Supported
• Inbuilt FEC: No
• Packaging Technology: COB (Chip-on-Board)
Reliability & Environmental
• Operating Temperature Range: Commercial: 0 °C to 70 °C (32 °F to 158 °F)
• MTBF:
o 684,931 hours @ 50 °C, 60% confidence level
o 273,972 hours @ 50 °C, 90% confidence level
Applications
• 400G Ethernet
• Data Center Interconnect (short-reach)
• Cloud and hyperscale networks
• High-density switch-to-switch and switch-to-server links
Standards & Compliance
• OSFP MSA
• CMIS 4.1
• IEEE 802.3cd
Warranty
• Warranty Period: 5 Years