logo
Solutions
GPU Repair
GPU Cloud Rental
Resources
About Us
Contact Us
FREE SHIPPING on Orders Over US$99
Free Quotation

English English

By clicking the "Submit", you agree that your information is collected and used for the purpose of responding to your inquiry in accordance with the Privacy Policy and Terms of Use
Submit
Cisco SFP-25G-LR-S Compatible 25GBASE-LR SFP28 25G 1310nm 10km DOM Duplex LC/UPC SMF Ethernet Optical Transceiver Module
Cisco SFP-25G-LR-S Compatible 25GBASE-LR SFP28 25G 1310nm 10km DOM Duplex LC/UPC SMF Ethernet Optical Transceiver Module
Cisco SFP-25G-LR-S Compatible 25GBASE-LR SFP28 25G 1310nm 10km DOM Duplex LC/UPC SMF Ethernet Optical Transceiver Module
P/N: SFP-25G-LR
$29.00
2
Solds
7
Reviews
5
Questions
safeguard
4-Year Warranty
30-Day Returns
30-Day Exchange
（1 In Stock）

Product Highlights

Built-in Macom Chip, Max. Power Consumption 1.2W
Interoperable with Other IEEE-compliant 25G Interfaces for Seamless Integration
Tested in Targeted Switch for Superior Performance, Quality, and Reliability
High-speed Connectivity Compliant to IEEE 802.3by and IEEE 802.3cc
Applied in 25G Ethernet, Telecom, and Data Center
Hot Pluggable SFP28 MSA Compliant
Class 1 FDA Laser Safety and RoHS Compliant
See more
Specifications
Certification
Connectivity Solutions
Comparison Table
Q&A
Reviews
Resources
Cisco SFP-25G-LR-S Compatible 25GBASE-LR SFP28 25G 1310nm 10km DOM Duplex LC/UPC SMF Ethernet Optical Transceiver Module
The SFP-25G-LR SFP28 transceiver provides 25GBase-LR throughput up to 10km over single mode fiber (SMF) using a wavelength of 1310nm via an LC duplex connector. The SFP28 transceiver works on the same 10G network cabling Infrastructure, boosting speed by at least 2.5 times. It also features DDM/DOM for real-time monitoring of operating status. This hot-swappable transceiver is pre-programmed, uniquely serialized, and tested for data traffic and application performance. Besides, it offers interoperability, laying a foundation for the next-generation network upgrade. Each SFP28 transceiver module is individually tested in targeted switch, it is fully compliant with the SFP28 MSA, CPRI and eCPRI standard. Featuring low power consumption, high speed, this 25G transceiver is ideal for 25G Ethernet, telecom, and data center.
Specifications
Form Factor
SFP28
Data Rate
25.78125Gbps
Media
SMF
Wavelength
1310nm
Connector
Duplex LC UPC
Distance
10km
Transmitter Type
DFB
Receiver Type
PIN
Electrical Modulation
1x 25.78125G NRZ
Optical Modulation
1x 25.78125G NRZ
Power Consumption
≤1.2W
Case Operating Temperature
0 to 70°C (32 to 158°F)
Protocol
25 Gigabit Ethernet 16G Fiber Channel
Application
Swicth to Switch Switch to NIC Router to NIC Other Optical Links
Certification
Product
Product
Product
Product
Product
Product
Product
Product
Product
Product
Connectivity Solutions
Cisco Catalyst Switch links：25G SFP28 to 25G SFP28
All
Cisco Catalyst Switch links：25G SFP28 to 25G SFP28
Comparison Table
Cisco Compatible 25GBASE-SR SFP28 25G 850nm 100m Duplex LC/UPC MMF Transceiver Module
SFP-25G-SR
Cisco Compatible 25GBASE-LR SFP28 25G 1310nm 10km Duplex LC/UPC SMF Transceiver Module
SFP-25G-LR
Form Factor SFP28SFP28
Data Rate 25.78125Gbps25.78125Gbps
Media MMFSMF
Wavelength 850nm1310nm
Connector Duplex LC UPCDuplex LC UPC
Distance 70m@OM3 100m@OM410km
Transmitter Type VCSELDFB
Receiver Type PINPIN
Electrical Modulation 1x 25.78125G NRZ1x 25.78125G NRZ
Optical Modulation 1x 25.78125G NRZ1x 25.78125G NRZ
Power Consumption ≤1.0W≤1.2W
Case Operating Temperature 0 to 70°C (32 to 158°F)0 to 70°C (32 to 158°F)
Protocol 25 Gigabit Ethernet 16G Fiber Channel25 Gigabit Ethernet 16G Fiber Channel
Application Swicth to Switch Switch to NIC Router to NIC Other Optical LinksSwicth to Switch Switch to NIC Router to NIC Other Optical Links
Form Factor
Data Rate
Media
Wavelength
Connector
Distance
Transmitter Type
Receiver Type
Electrical Modulation
Optical Modulation
Power Consumption
Case Operating Temperature
Protocol
Application
Cisco Compatible 25GBASE-SR SFP28 25G 850nm 100m Duplex LC/UPC MMF Transceiver Module
SFP-25G-SR
Cisco Compatible 25GBASE-LR SFP28 25G 1310nm 10km Duplex LC/UPC SMF Transceiver Module
SFP-25G-LR
SFP28
SFP28
25.78125Gbps
25.78125Gbps
MMF
SMF
850nm
1310nm
Duplex LC UPC
Duplex LC UPC
70m@OM3 100m@OM4
10km
VCSEL
DFB
PIN
PIN
1x 25.78125G NRZ
1x 25.78125G NRZ
1x 25.78125G NRZ
1x 25.78125G NRZ
≤1.0W
≤1.2W
0 to 70°C (32 to 158°F)
0 to 70°C (32 to 158°F)
25 Gigabit Ethernet 16G Fiber Channel
25 Gigabit Ethernet 16G Fiber Channel
Swicth to Switch Switch to NIC Router to NIC Other Optical Links
Swicth to Switch Switch to NIC Router to NIC Other Optical Links
Questions & Answers
edit icon Ask a question
All (5) Application (1)Product (1)Compatibility (1)Installation (1)Performance (1)
Q:

Can these be used in harsh environments?

by 8***m on 2025-08-27 16:58:26

A:

We offer industrial-grade models for rugged applications.

by AICPLIGHT on 2025-08-28 09:10:38

like icon Helpful 0
comment icon Comment 0
Q:

Are these modules low power?

by K***m on 2025-06-05 08:20:51

A:

Yes, we offer energy-efficient versions with low power consumption.

by AICPLIGHT on 2025-06-06 04:58:46

like icon Helpful 0
comment icon Comment 0
Q:

Is the firmware upgradeable?

by n***m on 2025-05-04 04:21:55

A:

Some models support firmware upgrades; please contact us for details.

by AICPLIGHT on 2025-05-04 19:40:59

like icon Helpful 0
comment icon Comment 0
Q:

What fiber connectors are supported?

by s***m on 2025-03-21 07:21:14

A:

We support LC, MPO, and MTP connectors based on the module type.

by AICPLIGHT on 2025-03-22 00:57:05

like icon Helpful 0
comment icon Comment 0
Q:

Is polarity important during installation?

by P***m on 2025-01-28 18:28:20

A:

Yes, ensure Type A/B polarity matches across the link.

by AICPLIGHT on 2025-01-29 16:05:27

like icon Helpful 0
comment icon Comment 0
Customer Reviews
edit icon Write a review
All (7) Performance (2)Compatibility (1)Ease of Use (1)Customer Support (2)Value (1)
7
7***m
2025-06-24 12:48:54
Confirmed Purchase
5.0

The 25G modules provided the bandwidth we needed for our ESXi hosts without causing compatibility issues with our SFP28 ports. Latency stayed under control and the modules remained cool to the touch.

link icon Helpful 0
comment icon Comment 0
e
e***m
2025-06-18 09:37:39
Confirmed Purchase
5.0

A fantastic value for upgrading legacy 10G to modern 25G backbones. Performance is solid and pricing is highly competitive.

link icon Helpful 0
comment icon Comment 0
t
t***m
2025-05-08 20:58:23
Confirmed Purchase
5.0

We had a question about DOM support, and the vendor provided full documentation within hours, including screenshots and test results.

link icon Helpful 0
comment icon Comment 0
B
B***m
2025-04-26 10:18:19
Confirmed Purchase
5.0

The RMA process for one faulty unit was smooth and quick. Replacement shipped out the same day, with excellent communication throughout.

link icon Helpful 0
comment icon Comment 0
H
H***m
2025-04-21 17:30:52
Confirmed Purchase
5.0

100G models were used in a new aggregation layer deployment and integrated perfectly with our existing infrastructure. We saw stable throughput at full-duplex with no CRC errors during 48-hour stress tests.

link icon Helpful 0
comment icon Comment 0
j
j***m
2025-04-11 18:14:51
Confirmed Purchase
5.0

They came with dust caps and clear product labeling, making it easy for our technicians to inventory and deploy them across racks.

link icon Helpful 0
comment icon Comment 0
R
R***m
2025-04-08 21:16:35
Confirmed Purchase
5.0

Our core switches from Huawei and Arista detected the optics instantly. Compatibility is on par with the big-name brands, but at a fraction of the cost.

link icon Helpful 0
comment icon Comment 0
contact us