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HCH is a professional manufacturer in China, supplying 40g lr4 qsfp+ transceiver for data center networking.
HCH is a professional manufacturer in China, supplying 40g lr4 qsfp+ transceiver for data center networking.
HCH is a professional manufacturer in China, supplying 40g lr4 qsfp+ transceiver for data center networking.
HCH is a professional manufacturer in China, supplying 40g lr4 qsfp+ transceiver for data center networking.
HCH is a professional manufacturer in China, supplying 40g lr4 qsfp+ transceiver for data center networking.

Cisco Compatible 40GBASE-LR4 QSFP+ Optical Transceiver Module

QSFP-40G-LR4
The 40GBASE-LR4 QSFP+ optical transceiver supports 40GbE transmission up to 10km over duplex LC single mode fiber.Using CWDM technology and four optical wavelengths, it provides reliable long-distance connectivity for data center interconnect, campus backbone, and enterprise network applications.The module is compliant with IEEE 802.3ba and QSFP+ MSA standards and supports Digital Diagnostic Monitoring (DDM) for real-time optical performance monitoring.

Product Highlights
*40GBASE-LR4 transmission up to 10km
*Duplex LC single mode fiber connectivity
*1310nm CWDM optical technology
*IEEE 802.3ba and QSFP+ MSA compliant
*Digital Diagnostic Monitoring (DDM)
*Hot-pluggable QSFP+ form factor
*Ideal for data center interconnect
*Suitable for campus backbone networks
*Multi-vendor compatibility support
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40GBASE-LR4 QSFP+ Optical Transceiver Module  (40G, 1310nm, 10km, Duplex LC, DDM)

The 40GBASE-LR4 optical transceiver is widely used in modern data center and enterprise networks where reliable long-distance 40GbE connectivity is required.
Compared with short-reach multimode solutions, LR4 modules enable transmission over existing single mode fiber infrastructure, helping reduce network complexity while extending deployment flexibility.With support for data center interconnect, campus backbone connectivity, and enterprise aggregation networks, the module provides a cost-effective solution for building scalable and future-ready optical networks.

Product Details

Part Number：QSFP-40G-LR4
Description：40G QSFP+ optical transceiver supporting transmission up to 10km over duplex LC single mode fiber, operating at 1310nm with DDM support.
Compatible with：Cisco, Huawei, H3C, Arista, Juniper, Dell
 
Data Rate
Module Type
Distance
Wavelength
Interface
Temperature
DDM
40Gb/s
 QSFP+
10KM
1310nm
LC
0~70℃
Yes
 

Specifications

Part Number
QSFP-40G-LR4
Brand
Firstoptic
Form Factor
QSFP+
Max. Data Rate
44.6Gbps (4x 11.2Gbps)
Wavelength
1310nm
Max. Cable Distance
10km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB CWDM
Receiver Type
PIN
TX Power
-7~2.3dBm
Receiver Sensitivity
<-11dBm
Power Budget
4dB
Receiver Overload
2.3dBm
Power Consumption
≤3.5W
Extinction Ratio
>3.5dB
Core Size
9um
Modulation
NRZ
Commercial Temperature Range
0 to 70°C (32 to 158°F)
Protocols
OTN OTU3, 40G Ethernet, Fiber Channel, SATA/SAS3, MSA Complian

Certification system

HCH is a professional manufacturer in China, supplying 40g lr4 qsfp+ transceiver for data center networking.        HCH is a professional manufacturer in China, supplying 40g lr4 qsfp+ transceiver for data center networking.        HCH is a professional manufacturer in China, supplying 40g lr4 qsfp+ transceiver for data center networking.        HCH is a professional manufacturer in China, supplying 40g lr4 qsfp+ transceiver for data center networking.
 
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected. 
 Application Scenarios
    40g lr4 optical transceiver for data center interconnect over OS2 single mode fiber up to 10km

    Data Center Interconnect

    The 40GBASE-LR4 optical transceiver enables reliable 40GbE connectivity between data center facilities over distances up to 10km.
    Typically deployed with OS2 LC-LC single mode fiber patch cords and 40G QSFP+ switch ports, it provides a scalable solution for data center interconnect (DCI), storage networking, and cloud infrastructure expansion.

    Enterprise Backbone Connectivity

    The 40G QSFP+ LR4 transceiver enables reliable connectivity between enterprise headquarters, branch offices, and backbone network locations over existing single mode fiber infrastructure.
    When deployed with OS2 LC-LC single mode fiber patch cords and 40G Ethernet switches, it provides a cost-effective solution for enterprise backbone connectivity and long-distance network expansion.

    40g qsfp+ lr4 enterprise backbone connectivity using OS2 LC-LC single mode fiber links

    Features

    Before shipment, every 40g qsfp+ lr4 optical transceiver undergoes comprehensive performance verification, compatibility validation, and reliability testing.
    From optical signal testing and switch compatibility checks to temperature and aging tests, each 40gbase-lr4 module is inspected to ensure stable operation, long-term reliability, and consistent network performance.
    40gbase-lr4 optical transceiver performance verification using laboratory test equipmentTest Equipment
    40g qsfp+ lr4 compatibility testing with enterprise network switchesCompatible Test
    40g lr4 optical transceiver reliability and temperature aging quality control testQC Test
     

    High Compatibility for all Brands

    The 40g qsfp+ lr4 optical transceiver is tested for seamless compatibility with major networking platforms,
    including Cisco, Arista, NVIDIA, Huawei, H3C, Juniper, Dell, HPE, ZTE, Ruijie, and other leading vendors.
     
    The 40g qsfp+ lr4 optical transceiver is tested for seamless compatibility with major networking platforms, including Cisco, Arista, NVIDIA, Huawei, H3C, Juniper, Dell, HPE, ZTE, Ruijie, and other leading vendors.
     
    FAQ Section

    Q1: What is a 40GBASE-LR4 optical transceiver?

    The 40GBASE-LR4 optical transceiver is a QSFP+ module designed for 40GbE transmission over single mode fiber. It supports distances up to 10km using duplex LC connectors and CWDM technology.

    Q2: What fiber is required for a 40G QSFP+ LR4 module?

    A 40G QSFP+ LR4 module requires OS2 single mode fiber with duplex LC connectors. Multimode fiber is not supported for standard LR4 transmission.

    Q3: What is the maximum transmission distance of a 40GBASE-LR4 module?

    The 40GBASE-LR4 module supports transmission distances of up to 10km over single mode fiber, making it suitable for campus, enterprise, and data center applications.

    Q4: Where is a 40G LR4 optical transceiver commonly used?

    A 40G LR4 optical transceiver is commonly deployed in data center interconnect (DCI), campus backbone networks, enterprise network infrastructure, and carrier Ethernet environments requiring reliable 40GbE connectivity.

    Q5: What is the difference between 40GBASE-LR4 and 40GBASE-ER4?

    40GBASE-LR4 supports transmission up to 10km over single mode fiber, while 40GBASE-ER4 extends transmission distances up to 40km. LR4 is typically used for data center and campus networks, while ER4 is more suitable for metro and long-distance network deployments.

     
     
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