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    Home / Products / Transceivers / 100G/200G Transceivers / 100G QSFP28 / 102314

    Cisco QSFP-100G-ER4L-S Compatible 100GBASE-ER4 Lite QSFP28 1310nm 40km with FEC, 30km without FEC (Rx Type APD) LC Duplex SMF DDM Optical Transceiver Module

    Product No: 102314
    13 Reviews
    911 Sold
    US$ 679.00  US$ 999.00
    Compatible
    Transceivers type
    198 in real-time stock, 04 Jun, 2026

    Free Shipping over US$ 79.8

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    5-Year Warranty 30-Day Returns 90-Day Exchange
    Warranty
    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
    Returns & Exchange
    Exchanges caused by the customer's reasons will not be accepted.
    Please ensure that the item you're returning is repackaged with all the cords, adapters, and documentation included when you receive it.
    Please check our Return Policy for details.
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    1. Rate: 100G; Connector: LC; with DDM
2. Tx: EML / Rx: APD; Low Power Consumption ≤5W
3. Applied in Campus Network, Data Center and Enterprise Core Layer
4. Compatible with 200+ Vendors
5. Hot Pluggable QSFP28 MSA Compliant
    See more

    Specifications

    Cisco QSFP-100G-ER4L-S 100GBASE-ER4 Lite QSFP28 Optical Transceiver Module (SMF, 1310nm, 30km, LC, DDM)

     

    QSFP-100G-ER4L-S compatible optical transceiver module is designed with duplex LC connectors, reaching a link up to 40km with FEC, 30km without FEC over single-mode fiber(OS2). QSFPTEK manufactured 100GBASE-ER4 QSFP28 transceiver module is compliant with IEEE 802.3ba 100GBASE-ER4 Lite, QSFP28 MSA Compliant standard. Besides, DDM (digital diagnostics monitoring) function is supported on the 100G fiber optic transceiver to achieve real-time operating parameters monitoring. With these features, this 100G QSFP28 transceiver is widely applied in 100G telecom connections, DCI, Metro network, and high-performance computing networks.

     

    Part Number:

    QT-QSFP28-ER4

    Vendor Name:

    QSFPTEK

    Form Factor:

    QSFP28

    Data Rate:

    100Gbps

    Wavelength:

    1295~1310nm

    Distance:

     40km with FEC; 30km without FEC

    Connector:

    Duplex LC

    Cable Type:

    OS2 SMF

    Transmitter:

     4x EML

    Receiver Type:

    APD

    TX Power:

    -2.9~4.5dBm

    Receiver Sensitivity:

    <-20.5dBm (with FEC)

    <-17dBm (without FEC)

    Power Consumption:

    5W

    Modulation Format:

    NRZ

    DDM:

    Support

    Bit Error Ratio (BER):

    1.00E-12

    Protocols:

    IEEE 802.3ba 100GBASE-ER4 Lite, QSFP28 MSA

    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.

    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 OEM devices. Ideal for 100G telecom connections, data centers, DCI and Metro network Application.
    • 3. Protocols
      Compliant with IEEE 802.3ba, IEEE 802.3bm, SFF-8665, SFF-8636, 100G CWDM4 MSA, QSFP28 MSA.
    • 4. Quality Certifications
      Backed by CE, FCC, ROSH, ISO9001.

    Applications

    Scenario 1: 100G Switch to 100G Switch Direct Connectivity

    QT-QSFP28-ER4 Scenario 1 100G Switch to 100G Switch Direct Connectivity

      

     

    Scenario 2: 100G Switch to 100G NIC Direct Connectivity

    QT-QSFP28-ER4 Scenario 2 100G Switch to 100G NIC Direct Connectivity

    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

     

     

    Comprehensive Testing

     

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

     

    QSFP28 ER4 performance Test in various devices

     

     

    100G QSFP28 Model Contrast Table

            

    Part Number

    QT-QSFP28-SR4

    QT-QSFP28-PSM4

    QT-QSFP28-IR4

    QT-QSFP28-LR4

    QT-QSFP28-CWDM-LR4

    QT-QSFP28-ER4 (Rx SOA)

    QT-QSFP28-ZR4

    Image

    Wavelength

    850nm

    1310nm

    1271~1331nm

    1310nm

    1271~1331nm

    1310nm

    1310nm

    Max Distance

    100m

    500m

    2km

    10km

    10km

    40km

    80km

    Cable Type

    OM3/OM4 MMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    OS2 SMF

    Connector

    MPO/MTP-12

    MPO/MTP-12

    LC Duplex

    LC Duplex

    LC Duplex

    LC Duplex

    LC Duplex

    Tx Power(dBm)

    -8.4~+2.4

    -9.4~+2

    -6.5~+2.5

    -4.3~+4.5

    -6.5~+2.5

    -2.9~+4.5

    +2~+7

    Rx Sensitivity(dBm)

    -10.3

    -12.66

    -11.5

    -10.6

    -11.5

    -20.9

    -27

    Max Power Consumption

    2.5W

    3.5W

    3.5W

    4W

    3.5W

    5W

    5.5W

    Source

    VCSEL+PIN

    DFB+PIN

    CWDM DFB+ PIN

    EML+PIN

    CWDM DFB +PIN

    4x EML+SOA+PIN

    EML+SOA+PIN

    Operating Temperature

    0~70°C

    0~70°C

    0~70°C

    0~70°C

    -40~85°C (Available)

    0~70°C

    0~70°C

    -20~85°C (Available)

    0~70°C

    -40~85°C (Available)

     

    Questions & Answers

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    • Speed (1)
    • Premium Service (2)
    • Excellent Quality (3)
    • Good Price (1)
    • Shopping Experience (1)
    • Complete Documentation (1)
    • Plug-and-Play (1)
    • Good Packaging (2)
    • High Reliability (3)
    • Fast Delivery (1)
    • Compatibility (1)
    • High Performance (5)
    • Oswald Tuttle United States of America
      2026-01-09

      This module provides consistent performance for long-distance transmission. Link setup is quick, and the signal remains stable during extended operation. Error rates stay low, and optical power levels remain within expected ranges.

      Transceivers typeQSFP-100G-ER4L-S (Rx APD)

      CompatibleCisco

      Verified Purchase

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      0

    • Cary United States of America
      2025-12-31

      We deployed the 100G ER4 for a long single-mode link between two facilities and it's been rock solid. The link came up clean right away and has stayed stable under heavy traffic. A good choice when you need reliable long-distance 100G without overcomplicating the setup.

      Transceivers typeQSFP-100G-ER4L-S (Rx APD)

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Cedric Cumberland United States of America
      2025-12-05

      This 100GBASE-ER4 module delivers very stable performance for long-distance transmission. The link comes up quickly, and the bit error rate stays consistently low during operation. Overall, it’s a dependable choice for metro or backbone links.

      Transceivers typeQSFP-100G-ER4L-S (Rx APD)

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Irwin United States of America
      2025-10-23

      Deployed at the aggregation layer of a metropolitan area network, it offers long and stable transmission distances, with no packet loss for extended periods. It's plug-and-play, shipped quickly, and has excellent after-sales service.

      Transceivers typeQSFP-100G-ER4L-S (Rx APD)

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Liam United States of America
      2025-09-26

      I purchased this 100G ER4 module for long-distance backbone connectivity. It delivered excellent stability over more than 30 km without signal drops. The module integrates smoothly with our existing switches, runs cool, and performs reliably. A solid choice for data center interconnects.

      Transceivers typeQSFP-100G-ER4L-S (Rx APD)

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • John M. United States of America
      2025-09-12

      The product arrived last week with intact packaging. A pair of 100G SR4 are embedded in the anti-static box. Nice! Very convenient multi-packs.

      Transceivers typeQSFP-100G-ER4L-S (Rx APD)

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Jacqueline R United States of America
      2025-02-28

      I have made many purchases at QSFPTEK and Talia has provided me with a lot of help. Each time, the documentation is complete, and after receiving the goods, I also conducted tests. The parameters obtained are consistent with the website description. QSFPTEK's quality control is done very well.

      Transceivers typeQSFP-100G-ER4L-S (RX APD)

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Norman T United States of America
      2025-01-06

      Upgrading my network to 100G, the network transition went very smoothly and the rate and reliability of my network has increased dramatically, so if you're looking to upgrade your network to cope with the bandwidth of the future, then upgrade to 100G with QSFPTEK!

      Transceivers typeQSFP-100G-ER4L-S (RX APD)

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Susie Beard United States of America
      2025-01-03

      We ordered 100 QSFP28 ER4 modules, which are very compatible with our several Cisco Nexus-N9K-C92304QC switches. It can be seen that QSFPTEK's module quality control is very good. It can establish a stable connection over a long distance of 40 kilometers, and its performance is also excellent enough to meet our needs for long-distance transmission.

      Transceivers typeQSFP-100G-ER4L-S (RX APD)

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    • Romeo Robles United States of America
      2024-11-26

      The 40KM QSFP28 ER4 module I purchased can reach 40km in real life, something different from our previous purchase on the website is that QSFPTEK's product delivery is very fast and beyond our expectation!

      Transceivers typeQSFP-100G-ER4L-S (RX APD)

      CompatibleCisco

      Verified Purchase

      Helpful

      0

    Resources

    • PDF Document
      QT-QSFP28-ER4-APD Datasheet.pdf
    • PDF Document
      Transceiver Module User Guide.pdf
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    Cisco QSFP-100G-ER4L-S Compatible 100GBASE-ER4 Lite QSFP28 1310nm 40km with FEC, 30km without FEC (Rx Type APD) LC Duplex SMF DDM Optical Transceiver Module

    Compatible Cisco

    Transceivers type QSFP-100G-ER4L-S (Rx APD)

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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!

    Verified Purchase

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    Cisco QSFP-100G-ER4L-S Compatible 100GBASE-ER4 Lite QSFP28 1310nm 40km with FEC, 30km without FEC (Rx Type APD) LC Duplex SMF DDM Optical Transceiver Module
    US$ 999.00
    Compatible
    Cisco
    Transceivers type
    QSFP-100G-ER4L-S (Rx APD)
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    Bulk Order Quotes
    Cisco QSFP-100G-ER4L-S Compatible 100GBASE-ER4 Lite QSFP28 1310nm 40km with FEC, 30km without FEC (Rx Type APD) LC Duplex SMF DDM Optical Transceiver Module

    Compatible Cisco

    Transceivers type QSFP-100G-ER4L-S (Rx APD)

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