100G CWDM4 Lite QSFP28 Optical Transceiver FTLC1155RGPL6 QSFP28 Lite reach and limited temperature transceiver modules are designed for use in 100 Gigabit Ethernet links on up to 500m of single mode fiber. They are compliant with the QSFP28 MSA and represent a Lite version of the CWDM4 MSA (500m reach, 15°C to +60°C limited temperature), and portions of IEEE P802.3bm. Digital diagnostic functions are available via the I2C interface, as specified by the QSFP28 MSA and Application Notes AN-21535 and AN-21546. The optical transceiver is RoHS compliant as described in Application Note AN-2038.