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    Home / Products / Transceivers / 25G/40G Transceivers / 25G SFP28 / 72008

    Cisco SFP-25G-SR-S Compatible 25GBASE-SR SFP28 850nm 100m LC DDM MMF Optical Transceiver Module

    Product No: 72008
    71 Reviews
    8.8K Sold
    US$ 16.90  US$ 35.00
    Compatible
    Transceivers type
    5214 in real-time stock, 06 Jun, 2026

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

    Specifications

    Cisco SFP-25G-SR-S Compatible 25GBASE-SR SFP28 Optical Transceiver Module (MMF, 850nm, 100m, LC, DDM)

     

    The Cisco SFP-25G-SR-S compatible 25G SFP28 transceiver module is equipped with LC duplex connectors, reaching a link up to 100m over laser-optimized OM4 multimode fiber (70m over OM3 MMF). It is verified to interoperate with original Cisco switches, including the Catalyst 9400/9500/9600/9800 and Nexus 9200/9300/9500/3000 series. 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-SR SFP28 module is compliant with SFP28 MSA, IEEE 802.3ba SFP28 specifications. Besides, the small form-factor pluggable 28 (SFP28) SR 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-SR-S SFP28 25G transceiver at an affordable price, providing a cost-effective compatible solution for high-performance 25G connectivity.

     

    SR 25G SFP28 transceiver caters to 25 Gigabit Ethernet (25GbE) optical fiber connections, ideal for short-distance applications in the data center, campus network, enterprise core layer, and distribution layer, etc.

     

    Model Name SFP-25G-SR-S Vendor Name QSFPTEK
    Form Factor SFP28 Data Rate 25 Gbps
    Wavelength 850nm Distance 100m@OM4
    Connector LC Duplex Cable Type OM3/OM4 MMF
    Transmitter Type VCSEL Receiver Type PIN
    TX Power -8.4~2.4dBm Receiver Sensitivity <-10.3dBm
    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
    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 Cisco devices. Ideal for data center 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-SR Connectivity

     

    Connection 1: 25GBASE-SR Connectivity

            

    Connection 2: 25G to 100G Migration

    Connection 2: 25G to 100G Migration

                

    Connection 3: 25GBASE-SR Connectivity with NIC

    Connection 3: 25GBASE-SR 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

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    Customer Reviews

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    • Premium Service (2)
    • Customer Support (1)
    • Excellent Quality (8)
    • Good Price (4)
    • Complete Documentation (1)
    • Shopping Experience (1)
    • Good Packaging (3)
    • Plug-and-Play (3)
    • Compatibility (2)
    • Fast Delivery (2)
    • High Performance (1)
    • Urban United States of America
      2026-02-05

      Installed these in a top-of-rack setup for short MMF runs. Power consumption is low, ports come up clean, and we haven't seen any link drops. No complaints so far.

      Transceivers typeSFP-25G-SR-S

      CompatibleCisco

      Verified Purchase

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    • Myrna Dickey United States of America
      2025-12-26

      We've been running this 25GBASE-SR module for a while now, and it's been very easy to use with. It came up right after installation and has stayed stable ever since. No random drops, no strange alarms, and the link quality has been solid day after day.

      Transceivers typeSFP-25G-SR-S

      CompatibleCisco

      Verified Purchase

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    • Rufus United States of America
      2025-12-19

      Used this for a small upgrade from 10G to 25G on a few servers. Reused the same fiber and had zero issues. Easy install, solid performance, and no surprises so far.

      Transceivers typeSFP-25G-SR-S

      CompatibleCisco

      Verified Purchase

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      0

    • Simon United States of America
      2025-12-05

      Using the 25G SR for ToR uplink significantly improved port utilization, easily handling peak traffic from 42 servers. The modules are easy to plug and unplug, have good compatibility with mainstream switches, and the overall experience exceeded expectations.

      Transceivers typeSFP-25G-SR-S

      CompatibleCisco

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    • Toby United States of America
      2025-08-21

      We've been testing the 25G SR modules in our data center, and they work flawlessly with our switches. Great performance at a reasonable price.

      Transceivers typeSFP-25G-SR-S

      CompatibleCisco

      Verified Purchase

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    • Cyril Rhys United States of America
      2025-07-25

      We've been using this 25G SFP28 transceiver in our access switch deployment for a few weeks, and it's performed flawlessly. There have been no compatibility issues, and the link came up instantly with low power consumption. It's a great value for stable 25G connectivity.

      Transceivers typeSFP-25G-SR-S

      CompatibleCisco

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    • Irwin United States of America
      2025-03-14

      Great price, excellent product quality, and the account manager is quick to respond and very professional.

      Transceivers typeSFP-25G-SR-S

      CompatibleCisco

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    • Jamie United States of America
      2025-02-21

      This 25G SR module lights up green as soon as it is inserted into the device. It responds quickly, transmits stably, and the customer manager service is also very good.

      Transceivers typeSFP-25G-SR-S

      CompatibleCisco

      Verified Purchase

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    • Bart Andrew United States of America
      2025-01-22

      After purchasing this QSFPTEK optical module, I did a comparison test with my current lab module, and many of the parameters are equally good and exactly as advertised on the website, so if you need to choose a suitable and reliable optical module for your critical applications, then this product would be a good one!

      Transceivers typeSFP-25G-SR-S

      CompatibleCisco

      Verified Purchase

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      0

    • Kenneth Doherty United States of America
      2025-01-17

      Using these 25G optical modules for long-distance fiber connections, and they've been great. The signal clarity is excellent, and the modules keep the connection stable even over several kilometers.

      Transceivers typeSFP-25G-SR-S

      CompatibleCisco

      Verified Purchase

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    Resources

    • PDF Document
      QT-SFP28-SR Datasheet.pdf
    • PDF Document
      Transceiver Module User Guide.pdf
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    Cisco SFP-25G-SR-S Compatible 25GBASE-SR SFP28 850nm 100m LC DDM MMF 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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    Cisco SFP-25G-SR-S Compatible 25GBASE-SR SFP28 850nm 100m LC DDM MMF Optical Transceiver Module
    US$ 35.00
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    Cisco
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    Cisco SFP-25G-SR-S Compatible 25GBASE-SR SFP28 850nm 100m LC DDM MMF Optical Transceiver Module

    Compatible Cisco

    Transceivers type SFP-25G-SR-S

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