SFP-25GLR-31-I is an industrial-grade 25G SFP28 duplex LC/UPC single-mode optical transceiver engineered for robust 10km data links at a 1310nm nominal wavelength, capping its power consumption at an efficient 1.2W while featuring integrated Digital Optical Monitoring (DOM).
Key Features of Generic SFP-25GLR-31-I Compatible LINK-PP 25G SFP28
Generic SFP-25GLR-31-I Compatible LINK-PP module is a robust industrial 25G SFP28 transceiver that delivers steady data connectivity across 10km single-mode fiber links. Key specifications include a standard 1310nm operating wavelength, a duplex LC/UPC connection, and real-time DOM telemetry. This module keeps maximum power consumption under 1.2W to prevent overheating in enclosed cabinets.
This module features a rugged metal enclosure that significantly minimizes electromagnetic interference (EMI) in dense hardware setups. It also supports both optical and electrical loopback functions, making link testing and system troubleshooting much easier. These physical and functional designs ensure steady operation in harsh industrial environments.
SFP-25GLR-31-I: 25 Gbps Connectivity for Industrial Edge Deployments
This transceiver delivers a fast 25 Gbps data rate to meet the growing bandwidth needs of modern industrial edge systems. Its hardened, industrial-grade components ensure continuous uptime even in extreme temperature fluctuations. This makes it an ideal solution for outdoor telecom cabinets, factory automation, and smart grid nodes.
SFP-25GLR-31-I Module with 1310nm Wavelength
The module utilizes a 1310nm nominal center wavelength for efficient light transmission over single-mode fiber. This specific wavelength offers an optimal balance of low attenuation and low dispersion for medium-reach networking. It ensures clean signal integrity without requiring complex dispersion compensation hardware.
Engineered for long-distance reliability, this optical transceiver easily achieves a transmission reach of up to 10km over standard single-mode fiber. It provides an excellent link budget for connecting geographically separated industrial sites or enterprise distribution layers. It allows for broad network expansion without losing signal strength.
SFP-25GLR-31-I Module with Duplex LC/UPC Interface
Equipped with a standard duplex LC/UPC connector, the module guarantees precise physical alignment and low insertion loss. The UPC polish minimizes back-reflections to protect the laser source and maintain clear data paths. This industry-standard interface ensures seamless compatibility with existing fiber patch cables.
SFP-25GLR-31-I Module with DOM for Real-Time Monitoring
Integrated Digital Optical Monitoring allows network administrators to track vital operating parameters in real time. It monitors critical data such as optical output power, laser temperature, and supply voltage. This proactive diagnostic feature helps prevent sudden network downtime through early fault detection.
Generic SFP-25GLR-31-I Compatible LINK-PP module is manufactured under a strict quality management system and fully complies with international standards, including ISO 9001, CE, RoHS, and FCC certifications.
Every module undergoes rigorous hardware testing, including signal integrity checks and temperature cycling, to guarantee stable performance in harsh conditions.
SFP-25GLR-31-I Quality Certifications
These recognized industry credentials verify that the transceiver meets all global safety, environmental, and electromagnetic compatibility regulations.
This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.
ISO/IEC 27001 is an international standard for managing and processing information security. This standard is jointly developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It sets out requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS). Ensuring the confidentiality, integrity, and availability of organizational information assets, obtaining an ISO 27001 certificate means that the enterprise has passed the audit conducted by a certification body, proving that its information security management system has met the requirements of the international standard. Please contact us to learn more.
This product is in conformity with ISO14001.It is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability. Please contact us to learn more.
ISO 45001 is a global standard that sets out the requirements for an occupational health and safety management system (OH&SMS).
REACH is a European Union regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals. It came into force on 1st June 2007 and replaced a number of European Directives and Regulations with a single system. The regulation aims to protect human health and environmental safety, maintain and improve the competitiveness of the EU chemical industry, and develop innovative capabilities for non-toxic and harmless compounds to prevent market fragmentation, increase the transparency of the use of chemicals, promote non-animal experiments, and pursue sustainable social development.Please contact us to learn more.
This product meets the applicable requirements of Directive (EU) 2015/863 of RoHS. It restricts the use of 10 hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.
This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.
CB is an international system operated by IECEE. This product is based on IEC standards for testing the safety performance of electrical products. Please contact us to learn more.
This product fully accords with UKCA (UK Conformity Assessed) certificate, which signifies that it meets all relevant quality standards as well as health and safety requirements. Please contact us to learn more.
UL certification is a non-mandatory certification in the United States,mainly testing and certification of product safety performance.Its ultimate purpose is to obtain products with a fairly safe level for the market,and to contribute to ensuring human health and property safety.Please contact us to learn more.
SFP-25GLR-31-I Certified for Reliable Host-Device Compatibility
The transceiver is comprehensively tested on major enterprise switches and routers to ensure seamless plug-and-play interoperability without port errors.
Every SFP28 optical transceiver undergoes strict hardware evaluations to guarantee stable network data rates and structural integrity in harsh conditions; learn more at the LINK-PP Test Support Center.
Optical Spectrum Test
Verify precise central wavelengths and spectral widths for clean transmission.
Eye Pattern Test
Analyze optical signal quality and transmitter performance to prevent distortion.
Bit Error Rate Test
Measure data transmission accuracy to guarantee flawless network link stability.
Temperature Test
Validate operational reliability across extreme industrial heat and cold environments.
Product Shipping for Generic SFP-25GLR-31-I Compatible LINK-PP 25G SFP28
We provide safe, reliable delivery methods for your network components. Our team guarantees rapid dispatch and global coverage.
Anti-Static Protective Packaging
Shield delicate transceiver circuitry from harmful electrostatic discharge damage.
Shock-Resistant Transport Protection
Secure packages against physical impacts during long-distance transit.
Fast Order Processing and Dispatch
Accelerate order handling times to minimize project deployment delays.
Global Logistics and International Delivery
Ship orders worldwide through dependable international courier service networks.
Generic SFP-25GLR-31-I Compatible LINK-PP module features a simple plug-and-play installation into any standard 25G SFP28 host port, making network upgrades fast and efficient. It is engineered for industrial edge computing, outdoor telecom infrastructure, and automation hubs that require reliable, long-distance single-mode fiber connectivity.
SFP-25GLR-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
Professional guidance to help you select the optimal SFP-25GLR-31-I module for your network design and application needs.
Compatibility Verification Support
Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.
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
Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.
Read technical answers about optical media requirements, maximum power metrics, electrical shielding properties, and system-level loopback test functions.
No. This 25G SFP28 module utilizes a 1310nm laser optimized specifically for Single-Mode Fiber (SMF). Using it with multi-mode fiber will cause severe signal attenuation and link failure.
The module is designed for high energy efficiency, limiting its maximum power consumption to 1.2W, which helps reduce thermal buildup in high-density switches.
Yes, it supports both optical and electrical loopback functions. This allows engineers to easily perform remote diagnostic testing and isolate link issues without physical hardware intervention.
Yes. The transceiver is built with a fully metallic enclosure that provides excellent shielding, significantly minimizing EMI in dense industrial network racks.
A:
It utilizes a high-reliability Distributed Feedback (DFB) laser, which provides the ideal balance of cost and performance for 10km links. By
admin on
2026-03-06
A:
Yes, as long as the total link attenuation across your single-mode fiber path does not exceed the specified optical power budget. By
admin on
2025-12-04
A:
Yes, the LS-SM3125-10I is an industrial-grade 25G SFP28 optical transceiver fully certified to operate reliably from -40°C up to +85°C (-40°F to 185°F). By
admin on
2025-08-21
A:
Yes, exactly. By turning on electrical loopback, you isolate the host switch; by turning on optical loopback, you test the incoming fiber path. By
admin on
2025-05-31
A:
The DDM telemetry complies with SFF-8472, providing an accuracy of ±3dB for optical power readings and ±10% for internal laser bias current reporting. By
admin on
2025-01-14
Reliable hardware. The duplex LC UPC connector snaps cleanly. Our single-mode fiber infrastructure is quite complex with multiple patch panels, but these optics punch through the insertion loss without an issue.
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494412
325741
U***d
France
Verified
Purchase
5 .0
2025-11-27
Deployed these transceivers for our municipal cell tower backhaul project where 25G links are required to feed modern base stations. Given that these are mounted inside roadside outdoor cabinets subject to extreme vibration and massive temperature swings, commercial-grade optics simply do not survive. The LS-SM3125-10I industrial-grade 25g SFP28 module has been our go-to solution. The Duplex LC connection provides an extremely secure mechanical latch that resists vibration-induced micro-disconnects. Signal integrity remains excellent, and DOM telemetry via CLI shows stable TX power at +0.5dBm and RX power well above the sensitivity limit of -13dBm, even over long patch runs with multiple interconnects. LINK-PP has proven to be a highly reliable module for our optical network infrastructure needs.
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494412
325743
M***h
France
Verified
Purchase
5 .0
2025-10-19
We use these for our 5G base station backhaul trials. The industrial -40°C to 85°C operating temperature range is the real deal—our outdoor enclosures get boiling in summer but these haven't dropped a single packet.
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494412
325739
P***n
United States
Verified
Purchase
5 .0
2025-09-22
Great 1310nm 10km optical transceiver. We deployed them in an unconditioned warehouse environment for local distribution layer uplink. Real-time DOM diagnostics make remote maintenance so much easier.
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494412
325738
X***k
Australia
Verified
Purchase
4 .0
2025-07-01
Ordered 100 units for a 5G base station backhaul installation. The wide operating temperature range (-40°C to 85°C) is exactly what we need. Delivery was a day late due to a local storm, but the transceivers are installed now and running flawlessly at full line rate. Solid purchase!
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494412
325723
S***e
United Kingdom
Verified
Purchase
5 .0
2025-02-13
High-density deployment in our regional telecom hub. The compact SFP28 form factor leaves plenty of room for airflow. DOM telemetry is perfectly integrated into our monitoring stack. (⌒▽⌒)
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494412
325729
H***e
South Africa
Verified
Purchase
5 .0
2024-10-05
The sales manager for my order was absolutely wonderful. She contacted me as soon as my order hit to verify all the information was correct for what I needed and answered any questions that I had. Impressed by their working efficiency.
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character.
494412
325724
S***n
Philippines
Verified
Purchase
5 .0
2024-05-18
Great experience as usual! We have been Link-pp's customers for years! We have never had a problem and have always been able to speak to a real person when ordering something or asking questions.
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