The LINK-PP LS-SM551G-60I is a high-performance industrial-grade SFP transceiver engineered for reliable 1.25Gbps data transmission. Operating over a 1550nm wavelength, this robust optical module supports links up to 60km on single-mode fiber. It features a duplex LC connector, compliance with SFP MSA standards, and built-in DOM for continuous diagnostic monitoring in harsh environments ranging from -40°C to +85°C.
LINK-PP Part Number
LS-SM551G-60I
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1550nm
Max Cable Distance
60km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
0 to +5dBm
RX Power
-26 to -1dBm
Receiver Sensitivity
-26dBm
DOM Support
Yes
Operating Temperature Range
-40 to 85°C
Protocols
SFF-8472 MSA Compliant, IEEE 802.3ah-2004
Key Features of LINK-PP LS-SM551G-60I 1.25G SFP
This industrial SFP module stands out with its standard-compliant hot-pluggable footprint, ultra-low power consumption, and reliable Class 1 laser safety. Designed for extreme durability, it integrates a high-stability DFB transmitter and a sensitive PIN receiver to ensure exceptional long-haul performance and seamless network interoperability.
LINK-PP LS-SM551G-60I 1.25G SFP Optical Module
The LINK-PP LS-SM551G-60I 1.25G SFP optical module provides a cost-effective, hot-swappable hardware solution for enterprise, industrial, and service provider networks. It perfectly balances speed, distance, and extreme temperature resilience for mission-critical fiber networking.
LS-SM551G-60I: 1G Connectivity for Voice over IP (VoIP) Server
Deploying the LS-SM551G-60I ensures deterministic, high-bandwidth 1G connectivity for modern Voice over IP (VoIP) servers. It eliminates network jitter, minimizes packet loss, and maintains crystal-clear voice communication streams across distant corporate infrastructure.
LS-SM551G-60I Module with 1550nm Wavelength
Leveraging a specialized 1550nm wavelength, the LS-SM551G-60I module significantly minimizes optical attenuation over single-mode fiber. This optimal spectral choice enables clear, uninterrupted signal propagation over extended geographical distances without the need for inline amplifiers.
LS-SM551G-60I Module Supporting 60km Transmission
Engineered for long-haul networks, the LS-SM551G-60I module supports an impressive 60km transmission distance. This extensive reach makes it an ideal selection for connecting remote base stations, metropolitan area networks, and widespread industrial facilities.
LS-SM551G-60I Module with Duplex LC Interface
Featuring an industry-standard duplex LC interface, the LS-SM551G-60I module guarantees secure fiber connections and excellent patch cable retention. The precision-molded LC housing ensures low insertion loss and high repeatable optical alignment.
LS-SM551G-60I Module with DOM for Real-Time Monitoring
Equipped with Digital Optical Monitoring (DOM), the LS-SM551G-60I module allows administrators to track real-time parameters. This includes monitoring transceiver temperature, laser bias current, supply voltage, and received optical power for proactive troubleshooting.
LINK-PP LS-SM551G-60I 1.25G SFP Certification
The LINK-PP LS-SM551G-60I transceivers undergo stringent international certification processes to guarantee their long-term mechanical safety, environmental sustainability, and electrical compliance in demanding global communication systems.
Our exhaustive quality testing program subjects every LS-SM551G-60I module to rigorous hardware screening, automated parametric analysis, and intense validation procedures before final warehouse release.
LS-SM551G-60I Quality Certifications
The LS-SM551G-60I module carries full certifications including CE, FCC, and RoHS compliance, verifying its strict adherence to world-class environmental standards and electronic safety mandates.
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.
LS-SM551G-60I Certified for Reliable Host-Device Compatibility
Each LS-SM551G-60I transceiver is pre-coded and fully certified to ensure flawless, plug-and-play compatibility with a wide array of switches, routers, and media converters.
Rigorous Testing Ensures Reliable SFP Performance
Every single LS-SM551G-60I SFP module undergoes comprehensive, multi-stage hardware validation to guarantee absolute dependability, zero-packet loss, and continuous uptime under full network workloads.
Optical Spectrum Test
The optical spectrum test verifies the 1550nm center wavelength, ensuring tight spectral width compliance.
Eye Pattern Test
The eye pattern test evaluates optical transmitter signal integrity, guaranteeing clean shapes and low jitter.
Bit Error Rate Test
The bit error rate test confirms flawless packet transmission and optimal receiver sensitivity under load.
Temperature Test
The environmental chamber test validates stable performance across the entire -40°C to +85°C industrial range.
Product Shipping for LINK-PP LS-SM551G-60I 1.25G SFP
We utilize specialized packaging solutions and rapid logistical workflows to ensure that your optical modules arrive safely, promptly, and ready for deployment.
Anti-Static Protective Packaging
Each module is individually sealed in premium ESD-shielding bags to prevent static damage.
Shock-Resistant Transport Protection
Cushioned, multi-slot grid trays defend the delicate optical transceivers against physical transit impacts.
Fast Order Processing and Dispatch
Our streamlined warehouse operations ensure immediate order picking, verification, and same-day carrier handoff.
Global Logistics and International Delivery
Partnering with top international couriers guarantees rapid, fully tracked worldwide shipping straight to your facility.
This practical demonstration showcases the seamless hot-swapping capability, instant link synchronization, and straightforward DOM data retrieval of the LS-SM551G-60I module when connected to live, standard industrial network switches.
LS-SM551G-60I Technical Support
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Pre-Sales Technical Consultation
Professional technical guidance to help customers select the most suitable LS-SM551G-60I modules based on network architecture and application requirements.
Compatibility Verification Support
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Deployment & Installation Assistance
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Long-Term Technical Assurance
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
A:
This transceiver is designed exclusively for Single Mode Fiber (SMF) to achieve its 60km transmission distance at a 1550nm wavelength. It will not work properly with OM3 multimode fiber. It utilizes an industry-standard Duplex LC interface. By
admin on
2026-05-19
A:
Yes, this industrial SFP transceiver is specifically engineered for harsh environments. The robust DFB laser and specialized heat dissipation design ensure highly stable optical transmission and continuous operation from -40°C freezes up to extreme 85°C temperatures. By
admin on
2026-02-11
A:
Yes, it is fully SFF-8472 MSA compliant, providing real-time Digital Optical Monitoring (DOM/DDM) for tracking voltage, temperature, and optical power. It also fully supports the IEEE 802.3ah-2004 protocol, making it perfectly adapted for industrial Ethernet applications. By
admin on
2025-10-08
A:
Absolutely! We offer custom EEPROM coding before shipping. Just let us know your hardware brands, and this MSA-compliant transceiver will work seamlessly across Cisco, Ubiquiti, and other major OEM networking platforms. By
admin on
2025-07-13
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character.
488450
294394
S***l
Sweden
Verified
Purchase
5 .0
2026-03-25
We run a WISP needing reliable industrial SFP transceivers for outdoor cabinets. These withstand summer heat up to 85°C without dropping links. OEM EEPROM coding worked flawlessly with mixed Juniper and MikroTik gear.
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488450
294382
N***r
Italy
Verified
Purchase
5 .0
2025-10-20
Needed a rugged 1.25G SFP 1550nm 60km module for a remote industrial control system. Paired with standard Duplex LC cables, it brought our factory network online instantly. Exceptional noise immunity and IEEE 802.3ah-2004 support.
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character.
488450
294393
K***n
Brazil
Verified
Purchase
5 .0
2025-06-13
Tested these LS-SM551G-60I modules in our edge routers. The 1550nm DFB laser and PIN receiver effortlessly handled a 52km span. Perfect for harsh industrial environments, and DDM stats align precisely with our NMS.
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character.
488450
294383
F***e
Ireland
Verified
Purchase
5 .0
2025-04-18
I was provided with fantastic, friendly, and Fast service. I would definitely recommend l-p.com to anyone who also wants to buy Optics Transceiver Modules
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488450
294391
D***z
Taiwan, Province of China
Verified
Purchase
5 .0
2025-03-11
Procured a batch for enterprise VoIP backbone over SMF. The SFF-8472 MSA compliant DOM capabilities allow IT ops to proactively monitor optical power. No TX/RX issues across the 60km distance. Solid B2B purchase.
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character.
488450
294385
T***r
Singapore
Verified
Purchase
5 .0
2025-01-23
This 100G QSFP28 Transceiver Module was purchased under the recommendation of a friend, and it has been running very well so far. Looking forward to future cooperation.
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