TN-SFP-25G Series

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

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

NDAA Compliant

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 Downloads

Additional Product Information

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.

Lantronix Part # Name Description Order Now
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Lantronix Part #
TN-SFP-25G Series

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

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Lantronix Part #
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.

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Lantronix Part #
TN-SFP-25G Series

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

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Lantronix Part #
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

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Lantronix Part #
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

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