Product Overview
• Form Factor: SFP28 (SFP+ backward compatible), hot-pluggable
• Application: 25GBASE-ZR, long-haul Ethernet links
• Transmission:
o Data rate: 25.78 Gbps
o Tx: 1310 nm laser
o Rx: APD receiver
• Reach: up to 80 km over SMF (with FEC on host)
• Connector: Duplex LC
• Power Supply: +3.3 V
• Power Consumption: = 1.5 W
• Temperature Range: -40°C to +85°C
• Compliance: IEEE 802.3cc Draft 3.0, SFF-8402, SFF-8432, RoHS

Key Features
• High-performance 25G transceiver with 80 km reach
• Integrated Digital Diagnostic Monitoring (DDM) via I²C
• Optimized for long-haul data center interconnects and metro networks
• Supports 25GAUI high-speed electrical interface

Optical Specifications
Transmitter (1310 nm laser):
• Center Wavelength: 1295–1325 nm
• Average Launch Power: +6 to +8 dBm
• Spectral Width (–20 dB): = 1 nm
• Extinction Ratio: = 4 dB
• Tx Off Power: = –30 dBm
• SMSR: = 30 dB
• Dispersion Penalty: = 2.7 dB
• Optical Return Loss Tolerance: 20 dB

Receiver (APD):
• Center Wavelength: 1295–1325 nm
• Sensitivity (OMA): = –20 dBm
• Stressed Sensitivity: = –16 dBm
• Overload: = –3 dBm
• Reflectance: = –12 dB
• LOS Assert: –26 dBm
• LOS De-assert: –22 dBm
• LOS Hysteresis: 0.5–4 dB