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    Home / Products / Transceivers / 25G/40G Transceivers / 40G QSFP+ / 56037

    Huawei QSFP-40G-ER4 Compatible 40GBASE-ER4 QSFP+ 1310nm 40km Optical Transceiver Module

    Product No: 56037
    22 Reviews
    1.3K Sold
    US$ 419.00
    Compatible
    Transceivers type
    215 in real-time stock, 19 Jun, 2026

    Free Shipping over US$ 79.8

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    Warranty
    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
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    1. Rate: 40G; Connector: Duplex lC; with DDM
2. DFB+PIN; Low Power Consumption <3.5W
3. Applied in Campus Network and Data Center
4. Fully Compatible with 100+ Vendors
5. QSFP+ MSA Compliant
    See more

    Specifications

    Huawei QSFP-40G-ER4 Compatible 40GBASE-ER4 QSFP+ Optical Transceiver Module (SMF, 1310nm, 40km, LC, DDM)

     

    The Huawei QSFP-40G-ER4 compatible 40G QSFP+ transceiver module is equipped with LC duplex connectors, reaching a link up to 10km over OS2 single-mode fiber (SMF). This 40G optical transceiver comes with a bidirectional 4-channel QSFP+ connector, enabling a total of 40 Gbps bandwidth by each channel carrying a 10 Gbps data rate. DOM/DDM (digital diagnostics monitoring) function is supported on the 40G fiber optic transceiver to achieve real-time operating parameters monitoring.

     

    QSFPTEK manufactured 40GBASE-ER4 QSFP+ module is compliant with QSFP+ MSA and IEEE 802.3ba 40GBASE-ER4 specifications. Besides, the quad small form-factor pluggable (QSFP) ER4 optic has been tested on host devices to ensure full compatibility with Huawei equipment, such as data center switches, enterprise routers, and server network interface cards (NICs). The third-party 40G SFP module is an ideal substitute to the Huawei QSFP-40G-ER4 QSFP+ 40G transceiver at an affordable price, providing a cost-effective compatible solution for high-performance 40G connectivity.

     

    ER4 40G QSFP optics cater to 40 Gigabit Ethernet (40GbE) optical fiber connections, ideal for high-performance and long-distance applications in long-haul networks, campus networks, metro networks, etc.

     

    Model Name QSFP-40G-ER4 Vendor Name QSFPTEK
    Form Factor QSFP+ Data Rate 40 Gbps
    Wavelength 1310nm Distance 40km@OS2
    Connector LC Duplex Cable Type OS2 SMF
    Transmitter Type DFB Receiver Type PIN
    TX Power -2.7~4.5dBm Receiver Sensitivity <-19dBm
    Power Consumption <3.5W Modulation Format NRZ
    DDM Support Bit Error Ratio (BER) 1E-12
    Protocols IEEE 802.3ba, QSFP+ MSA, SFF-8436, Infiniband 40G QDR Warranty 5 Years
    Quality Testing Program
    Optical Transceivers Testing

    Take a look at our test program to get the reliable and high-performance optical transceivers.

    Quality Certifications

    Features

    • 1. High Reliablility and Best Price
      Proudly self-producing and rigorous testing, QSFPTEK is dedicated to delivering cost-effective products with high reliability and performance at trade price.
    • 2. Wide Application Scenarios
      Fully compatible with almost all Huawei devices. Ideal for long-haul networks, campus networks, metro networks.
    • 3. Protocols
      Compliant with IEEE 802.3ba, QSFP+ MSA, SFF-8436, SFF-8636.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

    Scenario 1: 40GBASE-ER4 Connectivity with NIC

    40GBASE-ER4 Connectivity with NIC

      

      

    Scenario 2: 40GBASE-ER4 Connectivity with ODF

    40GBASE-ER4 Connectivity with ODF

     

    Product details

    Various Switch Tests

     

    Every module is quality tested for compatibility in the multi-brand switches environment, which guarantees flawless operations.

     

     

     

    Tested in The Host Device to Prove Interoperability

     

    Every unit sold undergoes rigorous quality testing, to ensure compatibility in the target switch environment, guaranteeing perfect operation.

     

    QSFPTEK Test Rack

     

     

    Various Switch Tests

     

    Every module is qualified through rigorous procedures and advanced equipment to ensure high-quality and reliable optical devices for you.

     

    QSFPTEK Test Devices

     

     

    40G QSFP+ Model Contrast Table

     

    Part Number

    QT-QSFP+-SR4

    QT-QSFP+-IR4

    QT-QSFP+-PSM4

    QT-QSFP+-LR4

    QT-QSFP+-LR4-20

    QT-QSFP+-ER4

    QT-QSFP+-ZR4

    Image

    Wavelength

    850nm

    CWDM

    1310nm

    CWDM

    CWDM

    CWDM

    LWDM 1294~1310nm

    Max Distance

    150m

    2km

    10km

    10km

    20km

    40km

    80km

    Cable Type

    OM3/OM4 MMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    Connector

    MPO/MTP-12

    LC Duplex

    MPO/MTP-12

    LC Duplex

    LC Duplex

    LC Duplex

    LC Duplex

    Tx Power(dBm)

    -7 ~ 1

    -7 ~ 2.3

    -6 ~ -1

    -7 ~ 2.3

    -4 ~ 2.3

    -2.7 ~ 4.5

    -2.7 ~ 4.5

    Rx Sensitivity(dBm)

    -9.5

    -11.5

    -14.4

    -13.7

    -11.5

    -19

    -28

    Power Consumption

    <0.7W

    <2.5W

    <2.5W

    < 2.5W

    <3.5W

    <3.5W

    <5W

    Source

    VCSEL + PIN

    DFB + PIN

    4xDFB + PIN

    DFB + PIN

    DFB + PIN

    DFB + PIN

    4xDFB + APD

    Operating Temperature

    0 to 70°C

    0 to 70°C

    0 to 70°C

    0 to 70°C

    0 to 70°C

    0 to 70°C

    0 to 70°C

    Questions & Answers

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    Customer Reviews

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    • ALL (3)
    • Excellent Quality (2)
    • Matched Cables (1)
    • Plug-and-Play (1)
    • High Performance (1)
    • Good Price (1)
    • Compatibility (1)
    • Kevin United States of America
      2025-12-12

      This was my first time buying optical modules from QSFPTEK, and I was a little worried at first. However, this 40GBASE-ER4 QSFP+ module was plug-and-play right out of the box, and the connection to the 40km link was very stable. The overall build quality is solid, compatibility is excellent, and the actual user experience exceeded my expectations. I will definitely buy from them again.

      Transceivers typeQSFP-40G-ER4

      CompatibleHuawei

      Verified Purchase

      Helpful

      0

    • selwyn United Kingdom
      2025-09-19

      I purchased the 40G QSFP+ ER4 module together with QSFPTEK's S7600-48X6Q switch and LC fiber patch cords, and everything worked seamlessly right out of the box. The module delivers excellent long-distance 40G performance and integrates smoothly with the switch. The build quality and reliability have been impressive so far. On top of that, QSFPTEK offered me a nice discount for the bundle, which made the whole purchase even more cost-effective. Very satisfied with both the products and the service.

      Transceivers typeQSFP-40G-ER4

      CompatibleHuawei

      Verified Purchase

      Helpful

      0

    • Landon United States of America
      2025-08-08

      I'm the technical manager, and so far, your 40G ER4 modules have been performing excellently. They've been running well in our configuration, and we're currently evaluating their performance over longer distances. So far, we're very satisfied with the quality.

      Transceivers typeQSFP-40G-ER4

      CompatibleHuawei

      Verified Purchase

      Helpful

      0

    Video

    Resources

    • PDF Document
      QT-QSFP+-ER4 Datasheet.pdf
    • PDF Document
      Transceiver Module User Guide.pdf
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    Huawei QSFP-40G-ER4 Compatible 40GBASE-ER4 QSFP+ 1310nm 40km Optical Transceiver Module

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    Mark

    2023-12-15
    This product works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent value fo ct works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent valur money!

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    Huawei QSFP-40G-ER4 Compatible 40GBASE-ER4 QSFP+ 1310nm 40km Optical Transceiver Module
    US$ 419.00
    Compatible
    Huawei
    Transceivers type
    QSFP-40G-ER4
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    Huawei QSFP-40G-ER4 Compatible 40GBASE-ER4 QSFP+ 1310nm 40km Optical Transceiver Module

    Compatible Huawei

    Transceivers type QSFP-40G-ER4

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