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
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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 07/04/2026
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