Coherent FTLF1436W5 SFP28 Optical Transceivers are designed for use in Ethernet links up to 25.78Gb/s data rate and up to 10km/20km link length. These transceivers feature a 1310nm DFB laser transmitter, duplex LC connector, built-in digital diagnostic functions, and metal enclosure for lower EMI. The FTLF1436W5 transceivers also feature a 3.15V to 3.46V supply voltage range, 400mA supply current, 100Ω typical transmitter input differential input, and 85% maximum relative humidity. These transceivers are compliant with SFF-8472 Rev 12.2 and compatible with SFF-8432 and applicable portions of SFF-8431 Rev. 3.0. The FTLF1436W5 transceivers are used in 25GBASE-LR, eCPRI, 25GE/10GE LR, and CPRI applications.