SFP-25GELR-31-I is an industrial-grade 25G SFP28 optical transceiver module featuring a 1310nm DFB laser transmitter, a duplex LC/UPC connector, and integrated DOM support to achieve reliable data transmission over single-mode fiber up to 20km while maintaining a tight maximum power consumption of 1.2W.
DELL Part Number
SFP-25GELR-31-I
Vendor Name
LINK-PP
Form Factor
SFP28
Max Data Rate
25.78Gbps
Wavelength
1310nm
Max Cable Distance
20km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
Receiver Sensitivity
<-14dBm
Receiver Overload
2dBm
TX Power
-1 to +7dBm
RX Power
-15 to +3dBm
DOM
Supported
Protocols
MSA Compliant, CPRI, eCPRI
Operating Temperature Range
-40°C to +85°C
Extinction Ratio
3.5dB
Key Features of DELL SFP-25GELR-31-I Compatible LINK-PP 25.78G SFP28
DELL SFP-25GELR-31-I Compatible LINK-PP module is an industrial-grade 25GBASE-LR SFP28 optical transceiver module designed for robust long-distance data transmission over single-mode fiber. It combines a 1310nm DFB laser, a duplex LC/UPC interface, and real-time DOM monitoring within a low-power 1.2W design. This module provides a highly reliable and standardized hardware solution for challenging network environments.
This optical transceiver strictly complies with industry standards including IEEE 802.3cc, SFF-8472 Rev 12.2b, SFF-8432a, and SFF-8431 Rev. 3.0c. These rigorous specifications ensure broad compatibility and seamless interoperability with major networking hardware vendors. The hot-pluggable SFP28 form factor allows for effortless installation and system maintenance without interrupting live traffic.
SFP-25GELR-31-I: 25 Gbps Connectivity for Long-Haul Industrial Links
Built specifically to withstand harsh environment networks, this module guarantees stable 25Gbps data throughput across wide temperature variations. It serves as a rugged interconnect solution for industrial edge deployments and long-haul factory automation backbones. The underlying hardware is optimized to maintain data integrity where standard commercial optics fail.
SFP-25GELR-31-I Module with 1310nm Wavelength
The transceiver utilizes a high-efficiency 1310nm DFB laser transmitter to emit optical signals through single-mode fiber. This specific wavelength provides an ideal balance of low attenuation and minimal dispersion for medium-to-long-range communications. It ensures clean signal transmission and reliable link quality over the entire fiber path.
Engineered for extended reach, this module safely spans network distances up to 20km over standard single-mode fiber (SMF). It easily bridges the physical gap between remote industrial sites and centralized data distribution centers. The optical power budget is carefully regulated to prevent signal degradation over these long-distance runs.
SFP-25GELR-31-I Module with Duplex LC/UPC Interface
Equipped with an industry-standard duplex LC/UPC connector, the module ensures a tight, secure physical fiber connection. The ultra-physical contact (UPC) polish minimizes back-reflection to optimize optical performance and reduce signal loss at the patch point. Its compact connector design maximizes port density on switches and patch panels.
SFP-25GELR-31-I Module with DOM for Real-Time Monitoring
Integrated Digital Optical Monitoring (DOM) provides network administrators with real-time diagnostics of critical module parameters. It constantly tracks active metrics such as optical output power, receiver input power, laser bias current, temperature, and supply voltage. This telemetry allows for proactive troubleshooting and prevents unexpected network downtime in critical industrial operations.
DELL SFP-25GELR-31-I Compatible LINK-PP complies with major international standards, including ISO 9001, CE, RoHS, and FCC certifications, to guarantee the highest safety and regulatory compliance.
Every transceiver undergoes a rigorous multi-stage testing process that checks signal integrity, optical power, and thermal stability before leaving the factory.
SFP-25GELR-31-I Quality Certifications
These strict industry credentials prove that the module meets global environment, safety, and manufacturing quality benchmarks.
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-25GELR-31-I Certified for Reliable Host-Device Compatibility
The module is verified across multiple hardware platforms to ensure flawless plug-and-play operation and zero link dropouts with major switches.
Every module undergoes strict physical evaluation to ensure maximum uptime, and you can explore our complete quality assurance methodology at the LINK-PP Test Support Center.
Optical Spectrum Test
Measure wavelength accuracy to prevent signal crossover.
Eye Pattern Test
Analyze transmitter signal quality for clear data paths.
Bit Error Rate Test
Verify zero-packet loss during high-speed data transmission.
Temperature Test
Confirm stable performance across extreme industrial conditions.
Product Shipping for DELL SFP-25GELR-31-I Compatible LINK-PP 25.78G SFP28
We secure your modules with premium protective materials and partner with top global carriers for safe delivery.
Anti-Static Protective Packaging
Shield sensitive electronic components from electrostatic damage during transit.
Shock-Resistant Transport Protection
Absorb physical impacts to keep internal hardware completely safe.
Fast Order Processing and Dispatch
Speed up logistics workflows to minimize standard order wait times.
Global Logistics and International Delivery
Ship packages seamlessly to customers worldwide through trusted networks.
Slide the DELL SFP-25GELR-31-I Compatible LINK-PP 25GBASE-LR optical module into any standard SFP28 port and connect your duplex LC/UPC single-mode fiber patch cord for instant setup. It provides reliable, long-range 25Gbps connectivity for demanding applications like metro Ethernet access, remote industrial edge networks, and factory automation.
SFP-25GELR-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-25GELR-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.
Find practical guidance on deployment power metrics, extreme environmental operation, safe hot-plugging procedures, and accessing built-in diagnostic data.
It consumes less than 1.2W, making it highly energy-efficient for high-density 25G network deployments.
Yes, the industrial rating ensures stable operation from -40°C to +85°C, though ensure adequate airflow and avoid condensation on the optical interfaces.
It supports hot‑swapping, but always follow ESD precautions – ground yourself and handle the module by its edges to avoid static damage.
Use the switch’s DOM monitoring commands or SNMP queries; the module provides TX/RX power, bias current, voltage, and temperature.
A:
Yes, the physical dimensions strictly adhere to the SFP28 MSA standard. The compact duplex LC housing ensures tight adjacent port isolation and prevents electromagnetic interference. By
admin on
2026-01-27
A:
The internal optical assembly is structurally reinforced to dampen mechanical resonance, completely preventing laser wavelength shifting in heavy-industrial zones. By
admin on
2025-09-24
A:
While the module features a strong optical budget, heavy macro-bend losses can still degrade link stability over long distances. We highly recommend inspecting your fiber or replacing the patch cord if your DOM RX power readings drop below the -14dBm threshold. By
admin on
2025-07-07
Love how the SFF-8472 digital diagnostics report accurate real-time metrics. RX power sits beautifully right in the sweet spot over our 12km single-mode fiber patch. No attenuation pads needed.
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494069
325536
N***w
Italy
Verified
Purchase
5 .0
2025-11-02
Our municipal Metro-Ethernet ring upgrade suffered from sporadic link dropouts at 25G speeds due to chromatic dispersion on older fiber paths around the 20km limit. Switching our core optics to the LINK-PP 1310nm wavelength completely neutralized the dispersion curve anomalies we were experiencing with cheaper generic brands. The spectral width of their DFB laser is tightly controlled, delivering a razor-sharp signal over long SMF distances without needing expensive dispersion compensation modules (DCM).
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494069
325539
Q***e
Bulgaria
Verified
Purchase
5 .0
2025-07-28
Deploying 5G mobile fronthaul means dealing with dirty real-world fiber plants. Our regional deployment spanned a 16km single-mode fiber path that has at least four legacy fusion splices and two outdoor patch panels, introducing considerable insertion loss. Operating under strict eCPRI timing constraints, we were worried about signal degradation. However, the module's high-efficiency DFB laser punched straight through the attenuation. The optical power budget handled the losses comfortably, maintaining a rock-solid timing synchronization loop with zero frame slippage. For telecom field engineers, this hardware is bulletproof.
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494069
325547
J***n
Belgium
Verified
Purchase
5 .0
2025-06-14
Tested over a spooled 18km single-mode fiber line in our lab before field deployment. Zero frame loss during a 48-hour continuous stress test. Truly enterprise-grade engineering.
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494069
325538
F***y
Sweden
Verified
Purchase
5 .0
2025-04-14
Our field telecom crew deployed these for an eCPRI wireless backhaul link. The 1310nm DFB laser punches through the distance easily. Stable TX power (-1 to +7dBm) over a 15km run. Excellent hardware. ✨
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494069
325540
M***s
Spain
Verified
Purchase
5 .0
2025-04-05
Used these for upgrading frontline cell site routers. Fully compatible with our devices. Low power draw keeps the remote node thermal profile exactly where we need it.
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character.
494069
325544
P***n
Romania
Verified
Purchase
5 .0
2025-02-19
Port density on modern 25G leaf switches creates a nightmare for electromagnetic interference (EMI) and adjacent channel crosstalk. What sets this module apart is the structural isolation of its duplex LC/UPC interface. The physical alignment mechanism provides an incredibly tight optical coupling, which dramatically reduces back-reflection and near-end crosstalk (NEXT) when all 48 ports are packed continuously. The 1.2W low-power design also means we don't have localized thermal pockets cooking adjacent optical paths. Our Bit Error Rate (BER) testing returned a pristine 10⁻¹² score. Truly premium optical engineering.
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494069
325546
I***l
Denmark
Verified
Purchase
5 .0
2025-02-06
The mechanical latching mechanism feels premium. It gives a satisfying click when seating into the SFP28 cage, and the UPC finish keeps back-reflection incredibly low. Top marks.
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494069
325542
B***e
United States
Verified
Purchase
4 .0
2025-01-21
The transit took an extra day due to bad weather, so we missed our Saturday morning server room downtime window. We had to reschedule for Sunday night. The modules themselves are perfect — plugged them in and the link state went green immediately.
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494069
325522
R***m
Argentina
Verified
Purchase
5 .0
2024-07-28
I recommend this company to everyone, it's much better than expected, no matter its modules or services. Rachel, my consultant, is very helpful, and update me every steps in this purchasing process. When I received my Optical Transceiver Module I had ordered, it was well packaged and worked fine with my switch. If possible, I will buy all my fiber products in l-p.com.
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494069
325533
A***e
United Kingdom
Verified
Purchase
5 .0
2024-03-02
These modules are awesome. They work prefectly. They are recognized right away with the speeds advertised. LINK-PP support has been great with all of our questions and helping us find the right modules for our needs. We will be using LINK-PP again the future for our Fiber needs. Thank you!
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494069
325521
R***a
Bangladesh
Verified
Purchase
5 .0
2023-12-19
I just placed my second order with LINK-PP and have been extremely impressed by the service. Orders are filled quickly and the prices are far better than ordering directly from local stores.
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494069
325524
N***p
United States
Verified
Purchase
5 .0
2023-09-04
I am a very novice user. I just explained what hardware I have and that was it ! The team at l-p.com made sure I had the right part and everything arrrived via international shipping within the week. Very impressed and very happy. Everything just works. Thank You !
Germany · English · EUR
