Cisco Compatible 25GBase
TN-SFP-xx25G-xR-S SeriesThis image is a family photo and is not representative of every SKU

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

TN-SFP-xx25G-xR-S Series



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


  • 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


Standards IEEE 802.3z
IEEE 802.3
IEEE 802.3ae
IEEE 802.3CC
Output Wavelength -5.5nm < λc < +7.5nm
Dimensions Width: 0.52” [13 mm]
Depth: 2.18” [55 mm]
Height: 0.33” [8 mm]
Power Input 3.3V
Environment 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
Certifications IEC-60825, FDA 21, CFR 1040.10 and 1040.11
Warranty Lifetime

Ordering Information

SKU Description  
TN-SFP-10/25G-LR-S TN-SFP-10/25G-LR-S

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

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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.

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

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

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

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Note: The Transition Networks 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.

*Transition Networks’ 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, Transition Networks SFP28 modules are also Compliant with all Cisco SFP28 based routers and switches, as well as Cisco’s IOS software. Transition Networks SFP28 modules ARE NOT Cisco OEM brand module