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FS SFP-25GMLR-31-I Compatible LINK-PP 10/25G SFP28 Dual-Rate 1310nm 10km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)
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FS SFP-25GMLR-31-I Compatible LINK-PP 10/25G SFP28 Dual-Rate 1310nm 10km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)

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Product summary

Product
FS SFP-25GMLR-31-I Compatible LINK-PP 10/25G SFP28 Dual-Rate 1310nm 10km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)
SKU
217126
P/N
LS-SM3125E-10I
Price
$ 66
Stock
1386 in Stock
Sold
642
For Order Over $1000 Get $15.00 Off , Code: Linkpp15
For Order Over $3000 Get $50.00 Off , Code: Linkpp50
For Order Over $5000 Get $100.00 Off , Code: Linkpp100
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34 Reviews
3 Questions
642 Sold
$ 66 0% OFF )
Free shipping. For wholesale pricing, please contact us directly.
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Unit Price :
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$ 66
100
$ 62.7
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$ 60.72
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$ 58.74
6000
$ 56.76
Manufacture: LINK-PP P/N: LS-SM3125E-10I SKU: 217126
Shipping:
Free Shipping
to United States via FedEx
Estimated delivery time : 3 - 10 days.
5-Year Warranty 30-Day Returns 30-Day Exchange
Warranty
  • Providing industry-leading 5-year warranty.
  • Read the table for details of all products' warranty.
Returns & Exchange
  • Refunds will be received about 5 business days after the receipt of returned items.
  • Items in stock for replacement can be shipped within 1 business day.
  • Read the full return policy for details.
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FS SFP-25GMLR-31-I Compatible LINK-PP 10/25G SFP28 Specifications

SFP-25GMLR-31-I is an industrial-grade, dual-rate 10G/25G SFP28 optical transceiver module that delivers reliable 10km transmissions over single-mode fiber (SMF) via a 1310nm DFB laser and a duplex LC/UPC connector, all while maintaining an energy-efficient maximum power consumption of just 1.2W and supporting real-time DOM diagnostics.

FS Part NumberSFP-25GMLR-31-IVendor NameLINK-PP
Form Factor SFP28 Max Data Rate 25.78Gbps
Wavelength 1310nm Max Cable Distance 10km
Connector Duplex LC Media SMF
Transmitter Type DFB Receiver Type

PIN

TX Power -8 to +3dBm RX Power -14 to +3dBm
Receiver Sensitivity <-13dBm Receiver Overload 2dBm
Operating Temperature Range -40 to 85°C Protocols SFF-8472, SFF-8024, SFF-8431, SFF-8432, CEI-28G-VSR

Key Features of FS SFP-25GMLR-31-I Compatible LINK-PP 25G SFP28

FS SFP-25GMLR-31-I Compatible LINK-PP serves as an industrial-grade, dual-rate optical transceiver tailored for flexible 10G/25GBASE-LR fiber systems. Built with a 1310nm DFB laser, a duplex LC/UPC interface, and built-in digital diagnostics, this durable unit ensures stable data transmissions over 10km spans. 

FS SFP-25GMLR-31-I Compatible LINK-PP 10/25G SFP28 Optical Module

This module fully supports both optical and electrical loopback functions to make network testing much easier. These integrated loopback modes allow engineers to quickly isolate faults and verify signal integrity during deployment. Additionally, it maintains a highly efficient design with a maximum power consumption of just 1.2W.

SFP-25GMLR-31-I: 10/25 Gbps Connectivity for Industrial IoT Frameworks

This module features a flexible dual-rate architecture that supports both 10Gbps and 25Gbps data speeds to match changing industrial demands. It allows industrial networks to run efficiently at 10G today while offering a smooth, seamless upgrade path to 25G bandwidth tomorrow. 

SFP-25GMLR-31-I Module with 1310nm Wavelength

The transceiver utilizes a specialized 1310nm DFB laser source to ensure stable and precise optical signal generation. This wavelength offers an excellent balance of low attenuation and minimal dispersion over single-mode fiber. It provides clean, error-free communication channels even in complex data transmission environments.

SFP-25GMLR-31-I Module Supporting 10km Transmission

Designed for long-reach connectivity, this transceiver safely transmits data up to a maximum distance of 10km. It is perfectly optimized for single-mode fiber (SMF) cabling plants to bridge distant network nodes. This makes it highly effective for connecting different buildings or dispersed industrial campus facilities.

SFP-25GMLR-31-I Module with Duplex LC/UPC Interface

The module is equipped with a standard duplex LC/UPC connector interface for quick and secure fiber plugging. Its Ultra Physical Contact (UPC) polish minimizes signal return loss to preserve maximum light integrity. The compact LC design allows for high port density on switches and patch panels.

SFP-25GMLR-31-I Module with DOM for Real-Time Monitoring

Featuring integrated Digital Optical Monitoring (DOM), this module tracks critical operational metrics in real time. Network administrators can easily monitor live statistics such as transceiver temperature, laser power, and supply voltage. This proactive monitoring helps identify potential faults before they cause unexpected network downtime.


FS SFP-25GMLR-31-I Compatible LINK-PP 25G SFP28 Certification

FS SFP-25GMLR-31-I Compatible LINK-PP meets strict global compliance and safety requirements, fully adhering to recognized international standards including ISO 9001, CE, RoHS, and FCC.

Optical Transceivers Testing

Every module undergoes rigorous hardware inspections and environmental stress testing to guarantee flawless operation under harsh conditions.

SFP-25GMLR-31-I Quality Certifications

These authoritative industry credentials validate the module's eco-friendly design, safe electrical engineering, and premium manufacturing standards.

SFP-25GMLR-31-I Certified for Reliable Host-Device Compatibility

Extensive interoperability testing ensures this transceiver integrates seamlessly and functions reliably across a wide range of major networking switches and routers.


Rigorous Testing Ensures Reliable SFP28 Performance

Every LINK-PP SFP28 transceiver module undergoes strict performance evaluations to guarantee flawless network stability. Discover our complete quality assurance processes through the LINK-PP Test Support Center.

Optical

Optical Spectrum Test

Measure central wavelength and spectral width for precise laser output.

Optical

Eye Pattern Test

Analyze signal quality and timing jitter to prevent data distortion.

Optical

Bit Error Rate Test

Verify data transmission accuracy to guarantee zero-packet-loss network links.

Optical

Temperature Test

Validate stable module operations under extreme industrial thermal conditions.


Product Shipping for FS SFP-25GMLR-31-I Compatible LINK-PP 25G SFP28

We ensure secure transit for your SFP28 optical modules. Your orders ship quickly via trusted international networks.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Shield fragile electrical components from static damage during transit.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Secure modules safely inside durable containers to prevent physical damage.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

Accelerate order handling to ensure rapid product shipment tracking.

Global Logistics and International Delivery

Global Logistics and International Delivery

Ship products reliably to customers worldwide using top logistics partners.

FS SFP-25GMLR-31-I Compatible LINK-PP 25G SFP28 Usage Demonstration

Featuring intuitive latching mechanisms, the SFP-25GMLR-31-I SFP28 optical module inserts smoothly into routers for rapid field setup. It is specifically targeted at demanding application fields, maintaining continuous link integrity for distributed edge computing terminals, industrial automation setups, and interconnected campus storage networks over 10km spans.

SFP-25GMLR-31-I Technical Support

LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.

Pre-Sales Technical Consultation

Pre-Sales Technical Consultation

Professional guidance to help you select the optimal SFP-25GMLR-31-I module for your network design and application needs.

Compatibility Verification Support

Compatibility Verification Support

Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.

Deployment & Installation Assistance

Deployment & Installation Assistance

Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.

Long-Term Technical Assurance

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.

FS SFP-25GMLR-31-I Compatible LINK-PP 25G SFP28 After-Sales Assurance

LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.

15 days

15-day no-reason return and refund

Free maintenance or replacement

Free replacement for dead-on-arrival (DOA) or defective items within the initial period

Free maintenance

 Free repair services for manufacturing defects throughout the warranty period

Limitations

Warranty exclusions and conditions apply

Model Comparison Table

LINK-PP

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P***y
Macao
Verified Purchase
5 .0
2026-04-29
Testing these SFP28 modules for a major 5G wireless fronthaul/backhaul simulation in our R&D lab. The CPRI/eCPRI protocol compatibility works perfectly at 25Gbps, making it an excellent choice for telecom infrastructure. The 1310nm wavelength provides the optimal attenuation curve for the 10km distance requirement over standard single-mode fiber. We verified transmitter center wavelength stability under variable voltages, and it remained tightly bounded within IEEE 802.3cc standards. This is a highly reliable optical transceiver module.
L***e
Thailand
Verified Purchase
5 .0
2026-03-15
Our network architecture relies heavily on 25G interfaces for multi-tenant cloud hosting. These modules provide the exact same distance and reliability as major brands at a fraction of the Capex.
W***d
Italy
Verified Purchase
5 .0
2026-03-07
Deployed 50 units in our campus fiber ring, all active.
I***h
Iran, Islamic Republic of
Verified Purchase
5 .0
2026-02-18
Highly recommend these for any enterprise network migration. We are running them at 10G right now on older switches and plan to toggle to 25G next year when we upgrade the core routers. Backward compatibility is great.
E***m
Indonesia
Verified Purchase
5 .0
2026-01-29
Using these SFP28 optical modules in outdoor pole-mounted enclosures where temps fluctuate wildly. The industrial-grade rating gives us peace of mind. So far, 2 months of continuous uptime with zero link flaps or frame drops.
D***y
Hungary
Verified Purchase
5 .0
2025-12-17
We operate an ISP network and use these for 10G/25G dual-rate aggregation links. The ability to switch speeds seamlessly without swapping hardware makes network scaling so much easier. Excellent 1310nm single-mode SFP transceiver modules.
K***n
Singapore
Verified Purchase
5 .0
2025-10-31
Good build quality and clean optical interfaces. Make sure to clean your fiber patches before plugging in, but once connected, the DOM readings are exceptionally stable. Will order another 100 units soon.
A***d
Poland
Verified Purchase
5 .0
2025-10-22
Industrial temp rating for outdoor cabinets is a lifesaver!
J***e
Canada
Verified Purchase
5 .0
2025-09-14
Our data center batch deployment went smoothly. Out of 120 pieces, not a single DOA. That’s an impressive quality control track record for third-party optical transceivers. We will be shifting more orders here.
U***d
Austria
Verified Purchase
5 .0
2025-08-02
Ran 10km link test, Rx power is spot on. Nice optics transceiver!
H***h
Israel
Verified Purchase
5 .0
2025-07-06
We replaced several failing 10G links with these 25G SFP28 modules for our high-frequency trading desk. The latency reduction was noticeable, and the 1310nm wavelength works flawlessly over our dark fiber lease.
C***m
Bulgaria
Verified Purchase
5 .0
2025-07-02
Needed industrial-grade dual-rate 25G SFP28 transceivers for our outdoor 5G cell tower backhaul cabinets. These handle the harsh summer heat without any throttling or signal degradation. Extremely satisfied with the build.
V***k
Spain
Verified Purchase
5 .0
2025-06-28
Dual-rate works as advertised. Tested 10G and 25G successfully.
S***m
Libyan Arab Jamahiriya
Verified Purchase
4 .0
2025-06-02
Transceivers look and feel high quality, and 25Gbps throughput is incredibly stable. My only complaint is that the protective rubber dust caps were a bit loose on two of the modules inside the package. Cleaned the connector interface before installation just to be safe, and they work perfectly.
F***m
Ireland
Verified Purchase
5 .0
2025-04-11
Great DOM functionality. Being able to monitor real-time laser bias current and internal temperature directly from our SNMP dashboard is critical for our remote infrastructure monitoring. Outstanding value.
I***i
United States
Verified Purchase
5 .0
2024-04-24
The 10/25/40G Transceiver Modules is really what I needed.Will come back to buy more.
K***i
Japan
Verified Purchase
5 .0
2024-03-24
Very surprised with the Fast shipping. Great shopping experience with LINK-PP!
M***R
United States
Verified Purchase
5 .0
2024-02-28
Very Fast shopping process.Everything went well and I'll order again.
B***v
Ireland
Verified Purchase
5 .0
2024-01-19
Great price, easy checkout
E***z
Hong Kong
Verified Purchase
5 .0
2024-01-10
I just placed an order with 50 pcs 10G Sfp Cage. You guys shipped them to me in the same day. Actually it's really urgent for me and I appreciate your Fast shipment. Will order it continually for my projects.
C***n
United States
Verified Purchase
5 .0
2023-12-17
No issues. Everything arrived on time as advertised.
G***e
Mexico
Verified Purchase
5 .0
2023-11-04
The order arrived within estimated time
Q***e
United Arab Emirates
Verified Purchase
5 .0
2023-10-20
Product was delivered as promised and the product was just what I expected. Great experience. I will order from them again.
S***h
United States
Verified Purchase
5 .0
2023-10-02
Unbeatable price. On time delivery. Well done!
R***n
Hong Kong
Verified Purchase
5 .0
2023-08-26
Great price for product and shipping. Fast shipping. Will shop again!
R***d
Taiwan, Province of China
Verified Purchase
5 .0
2023-08-24
I am happy that I was able to find reasonably priced Optical Transceiver Module in Link-pp.
H***n
United States
Verified Purchase
5 .0
2023-08-15
In these days of web ordering with faceless automation it was a fresh breeze to get a human behind my order. The order was Fast.
F***i
United States
Verified Purchase
5 .0
2023-06-18
LINK-PP has an easy to browse website with great prices and excellent customer service. Every interaction that I have had with LINK-PP has been smooth and hassle free. Would definitely reccomend to friends and family!
A***s
Israel
Verified Purchase
5 .0
2023-05-29
It arrived in good order and was what I expected and ordered.
S***r
United Kingdom
Verified Purchase
5 .0
2023-05-03
It is always a pleasure to purchase from l-p.com. Their website is easy and friendly to use and the products have great descriptions and always accurately show. Customer service is the best I've experienced..
E***i
United States
Verified Purchase
5 .0
2023-04-29
I interacted with their online chat and asked many question to ensure I can get the right one. They helped me pick the perfect module for me while weighing several options. I got the product I wanted and additional knowhow.
L***a
Iran, Islamic Republic of
Verified Purchase
5 .0
2023-04-19
Good products and prices. Poor communication. Email status is slow/delayed.
S***g
Russian Federation
Verified Purchase
5 .0
2023-04-15
Great price, great product!
C***d
United States
Verified Purchase
5 .0
2023-02-25
Very happy with the speed of delivery, unlike others, and accuracy of order. Will buy from them again.
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