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Cisco SFP-25G-LR Compatible 25GBASE-LR SFP28 1310nm 10KM DDM LC SMF Optical Transceiver Module

Product No: 90878
12 Reviews
1.7K Sold
$26.90  $45.00
5,217 in real-time stock, 26Oct, 2026

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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.
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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.
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1. Rate: 25G; Connector: Duplex lC
2. DFB+PIN; Low Power Consumption <1W
3. Applied in Campus and Metro Network
4. Fully Compatible with 100+ Vendors
5. SFP28 MSA Compliant
See more

Specifications

Cisco SFP-25G-LR Compatible 25GBASE-LR SFP28 Optical Transceiver Module (SMF, 1310nm, 10km, LC, DDM)

 

The Cisco SFP-25G-LR compatible 25G SFP28 transceiver module is equipped with LC duplex connectors, reaching a link up to 10km over OS2 single-mode fiber (SMF). This 25G optical transceiver comes with an SFP28 connector, enabling 25 Gbps bandwidth. DOM/DDM (digital diagnostics monitoring) function is supported on the 25G fiber optic transceiver to achieve real-time operating parameters monitoring.

 

QSFPTEK manufactured 25GBASE-LR SFP28 module is compliant with SFP28 MSA, IEEE 802.3by SFP28 specifications. Besides, the small form-factor pluggable 28 (SFP28) LR optic has been tested on host devices to ensure full compatibility with Cisco equipment, such as data center switches, enterprise routers, and server network interface cards (NICs). The third-party 25G SFP module is an ideal substitute to the Cisco SFP-25G-LR SFP28 25G transceiver at an affordable price, providing a cost-effective compatible solution for high-performance 25G connectivity.

 

LR 25G SFP28 transceiver caters to 25 Gigabit Ethernet (25GbE) optical fiber connections, ideal for long-distance applications in the campus, metro networks, ISP operators, etc.

 

Model Name SFP-25G-LR Vendor Name QSFPTEK
Form Factor SFP28 Data Rate 25 Gbps
Wavelength 1310nm Distance 10km@OS2
Connector LC Duplex Cable Type OS2 SMF
Transmitter Type DFB Receiver Type PIN
TX Power -7~2dBm Receiver Sensitivity <-14dBm
Power Consumption <1W Modulation Format NRZ
DDM Support Bit Error Ratio (BER) 1E-12
Protocols IEEE 802.3ba, SFP28 MSA Warranty 5 Years
Quality Testing Program
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 Cisco devices. Ideal for metro and campus networks.
  • 3. Protocols
    Compliant with IEEE 802.3ba, SFP28 MSA.
  • 4. Quality Certifications
    Backed by CE, FCC, ROSH, ISO9001.

Applications

Connection 1: 25GBASE-LR Connectivity

Connection 1: 25GBASE-LR Connectivity

   

Connection 2: 25G to 100G Migration

Connection 2: 25G to 100G Migration

      

Connection 3 : 25GBASE-LR Connectivity with NIC

Connection 3 : 25GBASE-LR Connectivity with NIC

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.

 

QSFPTEK Test Devices

 

 

Questions & Answers

  • All (6)
  • Have undergone any test programs? If yes, what are they?
    This module usually has the following tests: Normal/High Temperature Testing, Power Testing, Eye Diagram Testing, Sensitivity Testing, DDM Monitoring and Ping Package Testing.
  • Is it compatible with my Cisco C9500 series switch?
    You need to check whether the device is equipped with sfp28 ports or not by youself. Or tell us the specific switch model name (like C9500-48Y-4C) and then we'll check it for you. If the swich has bulit-in sfp28 ports, there will be no issue.
  • Can this 25G transceiver run at 10G? On your product page, I see it is connected with OM3/OM4 cables, but I only have OM2 cables, can I use OM2 directly?
    I'm sorry. It can only work at 25Gbps. However, you can use the OM2 cables to connect this 25G transceiver, but pls know the transmission distance would be less than 100m over OM2 cables.

Customer Reviews

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  • All (12)
  • Excellent Quality (1)
  • Plug-and-Play (1)
  • Shopping Experience (1)
  • Customer Support (1)
  • Premium Service (2)
  • Fast Delivery (1)
  • Pete North United States of America
    2025-09-26

    Our servers have been running the 25GBASE-LR module smoothly for weeks now. It is easy to plug in and is instantly recognised by the system. The transmission quality is stable over 10 km and I haven’t noticed any packet drops. It is slightly warmer than I expected, but still within normal limits. Overall, it's great value for money.

    Transceivers typeSFP-25G-LR

    CompatibleCisco

    Helpful

    0

  • Tess Leacock United States of America
    2025-08-29

    Been running this 25G LR module in my lab switch for a couple of weeks, and it's been working great. The link came up right away and has been working well over a 10-kilometer fiber run. The heat is a bit higher than I expected, but it doesn't affect performance. For the price, it's a very reliable choice.

    Transceivers typeSFP-25G-LR

    CompatibleCisco

    Helpful

    0

  • Victor Joe United States of America
    2025-08-15

    It's easy to use my equipment with it. The Signal is stable, and it feels like it can take a beating. My only complaint is that the box could've had better padding, but it arrived in good condition anyway. This 25G module works exactly as it says it does.

    Transceivers typeSFP-25G-LR

    CompatibleCisco

    Helpful

    0

  • Seamas United States of America
    2024-12-13

    It can achieve the expected transmission distance, the transmission is stable, and the performance is excellent. This is a great module. The account manager responded to my questions in a timely manner, and the express delivery arrived on time as expected.

    Transceivers typeSFP-25G-LR

    CompatibleCisco

    Helpful

    0

  • Ingersoll United States of America
    2024-10-24

    Using this 25G SFP28 LR on my Cisco WS-N9K-C93108TC-EX switch, no errors were reported, very easy to use, plug and play. Also purchased the matching LC optical fibre from the website, overall a very easy shopping experience and you can quickly find other products you need.

    Transceivers typeSFP-25G-LR

    CompatibleCisco

    Helpful

    0

  • Enoch France
    2023-04-14

    I highly recommend these optical modules to anyone looking for a reliable and cost-effective networking solution. They are plug and play and allow for future upgrades without breaking the bank.

    Transceivers typeSFP-25G-LR

    CompatibleCisco

    Helpful

    0

  • Howard W. United States of America
    2023-03-23

    I tested the Cisco 25Gbase-LR SFP28 transceiver on my Nexus 93180YC-EX switch and it surpassed my expectations. The module is easy to install and offers reliable, lightning-fast data transfer speeds. The build quality is exceptional, making it a great investment for anyone looking for a high-performance network solution.

    Transceivers typeSFP-25G-LR

    CompatibleCisco

    Helpful

    0

  • Natividad France
    2023-03-07

    I recently obtained multiple 25G SFP28 modules from QSFPTEK and found them to be comparable to Cisco's own transceiver modules, with the only noticeable difference being the more affordable price of the third-party transceivers. Delivery was prompt, and the modules were highly functional straight out of the packaging, working seamlessly with my Cisco C9500-24Y4C switches. I would definitely consider purchasing from QSFPTEK again for any future needs.

    Transceivers typeSFP-25G-LR

    CompatibleCisco

    Helpful

    0

  • Marguerite United States of America
    2023-03-07

    I purchased a 25G optical module for my Cisco N9K-C93180YC switch. QSFPTEK AM confirmed the module's compatibility before I placed the order. Upon plugging the module into the switch's port, it was able to read the module's TX and RX power.

    Transceivers typeSFP-25G-LR

    CompatibleCisco

    Helpful

    0

  • Terry United States of America
    2023-02-15

    The 25G SFP28 module purchased a week ago works fine on my RUIJIE 6700 series switch. These high-performance products help us achieve seamless data center connectivity at a low price. We are satisfied.

    Transceivers typeSFP-25G-LR

    CompatibleCisco

    Helpful

    1

Resources

  • PDF Document
    QT-SFP28-LR Datasheet.pdf
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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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Cisco SFP-25G-LR Compatible 25GBASE-LR SFP28 1310nm 10KM DDM LC SMF Optical Transceiver Module
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