TN-SFP-25G Series

Cisco Compatible 25GBase SFP28 Modules
25GBase-X, SFP28 With DMI (LC)

TN-SFP-25G Series
  • TN-SFP-xx25G-xR-S-Series
  • TN-SFP-25G-BX40D-I
  • TN-SFP-25G-SR-S
  • TN-SFP-25G-ER
  • TN-SFP-25G-BX40U-I
  • TN-SFP-1025G-LR-S

Applications: 25G Ethernet and Fiber Channel for Data Center eCPRI for 5G Fronthaul/Backhaul.

TN-SFP-25G Series

TN-SFP-25G Series Overview


  • SFP28 Optical Transceiver with LC connector
  • MSA Compliant
  • Compliant with 10GBase-xR (TN-SFP-25G-SR-S and TN-SFP-10/25G-LR-S Only)
  • Compliant with 25GBase-xR
  • Compliant with 5G eCPRI
  • Single +3.3V Power Supply
  • Power dissipation
    • < 1.2 Watts (TN-SFP25G-SR-S, TN-SFP-10/25G-LR-S)
    • < 2 Watts (TN-SFP-25G-ER, TN-SFP-25G-BX40x-I
  • Compliant with SFF-8431
  • Compliant with SFF-8472
  • RoHS Compliant

TN-SFP-25G Series Tech Specs


    • IEEE 802.3z
    • IEEE 802.3
    • IEEE 802.3ae
    • IEEE 802.3CC

    Output Wavelength

    • -5.5nm < λc < +7.5nm


    • Width: 0.52” [13 mm]
    • Depth: 2.18” [55 mm]
    • Height: 0.33” [8 mm]

    Power Input

    • 3.3V


    • Operating: 0°C to 70°C (TN-SFP-25G-SR-S, TN-SFP-10/25G-LR-S, TN-SFP-25G-ER)
    • Operating: -40°C to 85°C (TN-SFP-25G-BX40U-I, TN-SFP-25G-BX40D-I)
    • Storage: -40°C to 85°C


    • IEC-60825, FDA 21, CFR 1040.10 and 1040.11


    • Lifetime

TN-SFP-25G Series Resources

Application Spotlights
Press Releases
Case Studies

TN-SFP-25G Series Downloads

Note: Some Documentation may have Transition Networks named or pictured. Transition Networks was acquired by Lantronix in August 2021. Learn more about the acquisition here.

TN-SFP-25G Series Part Numbers

TN-SFP-10/25G-LR-S TN-SFP-25G Series

10G/25GBase-LR, SFP28 with DMI 1310nm single mode (LC) [10 km / 6.2 mi.] Link Budget: 8.3 dB

TN-SFP-25G-SR-S TN-SFP-25G Series

10G/25GBase-SR, SFP28 with DMI 850nm multimode (LC) [100/70 m; 328/230 ft.] Link Budget: 1.9 dB
*Distance up to 100m on 50/125 OM4 multimode fiber, up to 70 m for 50/125 um OM3 multimode fiber.

TN-SFP-25G-ER TN-SFP-25G Series

25GBase-ER, SFP28 with DMI 1310nm single mode (LC) [40KM / 24.9 mi.] Link budget: 18.0 dB

TN-SFP-25G-BX40U-I TN-SFP-25G Series

25Gbase-BX, SFP28 with DMI 1270nm TX / 1310nm RX single mode single fiber (LC) [40KM / 24.9 mi.]
Link budget: 19.0 dB

TN-SFP-25G-BX40D-I TN-SFP-25G Series

25Gbase-BX, SFP28 with DMI 1310nm TX / 1270nm RX single mode single fiber (LC) [40KM / 24.9 mi.]
Link budget: 19.0 dB

Lantronix Part # Name Description Order Now

Note: The Lantronix TN-SFP-xx25G-xR-S Series 25G SFP28 transceiver modules are designed to install in any SFP28 port allowing for 25G/10GBase-X interfaces to the network through the SFP28 connector. The TN-SFP-xx25G-xR-S transceivers are Cisco Compliant* and are designed for bi-directional serialoptical data communication such as 25G Ethernet at speeds up to 26.5 Gbps.

*Lantronix’ SFP28 modules fully comply with the Multi-Sourcing Agreement (MSA). This compliance allows our SFP28 modules to be used in all other MSA compliant SFP28 platforms. In addition, Lantronix SFP28 modules are also Compliant with all Cisco SFP28 based routers and switches, as well as Cisco’s IOS software. Lantronix SFP28 modules ARE NOT Cisco OEM brand module