As a 100G ER4 fiber optic transceiver, F-tone QSFP28-100G-ER4 supports up to 40km transmission over SMF at 1310nm wave length, which is compliant with QSFP28 MSA.
F-tone QSFP28-100G-SR4 QSFP SR4 Transceiver is designed for using in 100 Gigabit Ethernet links over multimode fiber, which is available with digital diagnostics.
F-tone QSFP28-100G-PSM4 is a parallel 100Gb/s Quad Small Form-factor Pluggable (QSFP28) PSM4 Optical Module that supports up to 500m transmission over SMF.
F-tone QSFP28-100G-LR4 is a 100G QSFP28 LR4 Transceiver Module that is designed for use in 100 Gigabit Ethernet links on up to 10km of single-mode fiber (SMF).
