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40G CWDM4 QSFP+ LR4 10km Transceiver
Posted on 2025-09-17

40G LR4 QSFP+ transceiver enables 10km SMF transmission with 4×10Gbps CWDM technology. Compliant with IEEE 802.3ba standards, it features low power consumption and LC duplex interfaces. Ideal for data center interconnects, enterprise networks, and long-distance communications, it supports high-density ports, hot-swappability, and compatibility with major switch brands.

0℃~70℃丨TX:-7~2dBm 丨 RX:<-13dbm丨

< 3.5W  丨Factory warranty 丨


CLQSFP40GLR4

4 channels full-duplex transceiver module 40G-QSFP+LR-10km.jpg

Up to 11.2Gbps data links per channel

Maximum link length of 10Km

4 CWDM lanes MUX/DEMUX design

Built-in digital diagnostic functions

Hot-pluggable QSFP+ form factor   

Single 3. 3V power supply   

Operating temperature: 0to 70

RoHS 6 compliant(lead free)

Digital Diagnostic Monitor(DDM)

Power Consumption < 3.5W  




Specification

Part Number

CLQSFP40GLR4

Vendor

C-LIGHT

Form Factor

QSFP+

Data Rate

40Gbps

Wavelength

1310nm

Distance

10km

Connector

Duplex LC

Media

SMF

Transmitter Type

DFB CWDM

Receiver Type

PIN

TX Power

-7~5dBm

Receiver Sensitivity

< -13dBm

Power Budget

6dB

Receiver Overload

>3dBm

Typical Power Consumption

≤3.5W

Extinction Ratio

>4dB

DDM/DOM

Supported

Ind.Temperature Range

0 to 70°C

Protocols

OTN OTU3, 40G Ethernet, Fiber Channel, SATA/SAS3, MSA Compliant

Warranty

3 Years


Specification
40G-QSFP+LR-10km-Transceiver.jpg40G-QSFP+LR-10km-test.jpg

40G-QSFP+LR-10km-DDM.png

Test video

Related Products

Part Number

CLQSFP40GLR4

CLQSFP40GER4

Center Wavelength1310nm1310nm
ConnectorDuplex LCDuplex LC
Cable Distance (Max.)10km40km
ModulationDFB CWDMDFB CWDM
Power ConsumptionSMFSMF
TX Power-7~5dBm-1~4.5dBm
Receiver Sensitivity

< -13dBm

< -19dBm
Receiver Overloa>3dBm>-5dBm
Extinction Ratio>4dB>5.5dB


Application Graph

40G-QSFP+LR-10km-application.jpg

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