FTL4C1Q 40GBASE-LR4 Optical Transceivers

Coherent FTL4C1Q 40GBASE-LR4 QSFP+ Optical Transceivers are designed for use in 40Gb Ethernet links over single-mode fiber (SMF). These FTL4C1Q modules feature power dissipation of <3.5W, a single 3.3V power supply, and an uncooled 4x10Gb/s CWDM transmitter. The devices comply with the QSFP+ multi-source Agreement (MSA), IEEE 802.3ba 40GBASE-LR4 specifications, and RoHS directive 2011/65/EU. Coherent FTL4C1Q optical transceivers offer digital diagnostic functions via an I2C interface, as specified by the QSFP+ MSA.

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Qty. RoHS ECAD Model Product
Wavelength
Data Rate
Fibre Type
Form Factor or Case Style
Rise Time
Emitting Source
Operating Supply Voltage
Minimum Operating Temperature
Maximum Operating Temperature
Application
Connector Type
Transmission Distance
Coherent FTL4C1QL3C
Coherent Fibre Optic Transmitters, Receivers, Transceivers XCVR, QSFP, 2km 40GE Lite, 4x10G CWDM DFB, PIN, Limiting, XLPPI electrical interface, LC, ROHS, 3.3V, 3.5W, 0/70 C operation, Gen3 2In Stock
Min.: 1
Mult.: 1

Transceivers 1337.5 nm 41.2 GBd Singlemode QSFP+ 28 ps Laser 3.3 V 0 C + 70 C Ethernet LC 2 km
Coherent Fibre Optic Transmitters, Receivers, Transceivers XCVR, QSFP, 10km 40GBASE-LR4, 4x10G CWDM DFB, PIN, Limiting, XLPPI electrical interface, LC, ROHS, 3.3V, 3.5W, 0/70 C operation, Gen3
Datasheet
7In Stock
28Expected 4/7/2026
Min.: 1
Mult.: 1

Transceivers 1310 nm 41.2 GBd Singlemode QSFP+ 28 ps Laser 3.3 V 0 C + 70 C Ethernet LC 10 km
Coherent FTL4C1QE3L
Coherent Fibre Optic Transmitters, Receivers, Transceivers XCVR, QSFP, 10km 40GBASE-LR4, 4x10G CWDM DFB, PIN, Limiting, XLPPI electrical interface, LC, ROHS, 3.3V, 3.5W, 15/60 C operation, Gen3 Non-Stocked
Min.: 2
Mult.: 2

Transceivers 1310 nm 41.2 GBd Singlemode QSFP+ 28 ps Laser 3.3 V + 15 C + 60 C Ethernet LC 10 km
Coherent FTL4C1QL3L
Coherent Fibre Optic Transmitters, Receivers, Transceivers XCVR, QSFP, 2km 40GE Lite, 4x10G CWDM DFB, PIN, Limiting, XLPPI electrical interface, LC, ROHS, 3.3V, 3.5W, 15/60 C operation, Gen3 Non-Stocked
Min.: 2
Mult.: 2

Transceivers 1337.5 nm 41.2 GBd Singlemode QSFP+ 28 ps Laser 3.3 V + 15 C + 60 C Ethernet LC 2 km