With data rates of up to 2.5Gbps over single-mode fiber (SMF) at distances of up to 20km and an operating wavelength of 1550nm, the LINK-PP LS-SM552G-20C 2.5G SFP module provides stable performance with low signal loss.
LINK-PP Part Number
LS-SM552G-20C
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
2.5Gbps
Wavelength
1550nm
Max Cable Distance
20km
Connector
LC duplex
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
-6 to +1dBm
RX Power
-20 to -1dBm
Receiver Sensitivity
<-18dBm
Receiver Overload
-1dBm
Operating Temperature Range
0 to 70°C
Protocols
MSA Compliant
Key Features of LINK-PP LS-SM552G-20C 2.5G SFP
This LINK-PP LS-SM552G-20C 2.5G SFP transceiver transmits at 2.5Gbps while maintaining consistent throughput and signal integrity over up to 20 kilometers of single-mode fiber. It features a built-in DOM for real-time monitoring and a standard LC duplex interface for easy installation, all ensuring long-term, dependable performance.
LINK-PP LS-SM552G-20C 2.5G SFP Optical Module
The LINK-PP LS-SM552G-20C optical module comes with a DFB laser transmitter and PIN photodiode receiver, providing precise optical input/output control, exceptional signal precision, and reliable thermal stability.
LS-SM552G-20C: Reliable 2.5Gbps Connectivity for Capacity Expansion
The LINK-PP LS-SM552G-20C 2.5G SFP module offers consistent 2.5Gbps performance, allowing for seamless bandwidth scaling for high-capacity operations. This makes it ideal for expanding networks across campuses, telecom fiber links, and core data center centers.
LS-SM552G-20C Module with 1550nm Wavelength
The 1550nm wavelength offers impressive attenuation resistance, maintaining sharp signal clarity and reducing optical distortion during long-distance transmission.
LS-SM552G-20C Module Supporting 20km Transmission
The LINK-PP LS-SM552G-20C 2.5G SFP module achieves secure and uninterrupted connectivity for up to 20 kilometers on single-mode fiber. Perfect for long-range deployments like inter-office links, backbone connections, and regional fiber routes.
LS-SM552G-20C Module with Duplex LC Interface
The duplex LC interface is compact and efficient, separating transmit and receive channels for easier cabling. It guarantees quick installation, consistent alignment, and complete compatibility with most standard SMF configurations.
LS-SM552G-20C Module with DOM for Real-Time Monitoring
The integrated DOM feature lets you view live signal parameters, including optical power, voltage, and temperature, to maintain optimal performance and accelerate troubleshooting before issues arise.
LINK-PP LS-SM552G-20C 2.5G SFP Certification
Produced under strict ISO 9001, CE, RoHS, and FCC certifications, each LINK-PP transceiver represents environmentally compliant engineering backed by a global standard of reliability and precision.
Every unit undergoes extensive performance and durability assessments prior to shipment.
LS-SM552G-20C Quality Certifications
Compliant with ISO 9001 production standards and backed by CE, RoHS, and FCC certifications, ensuring world-class safety and reliability.
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-SM552G-20C Certified for Reliable Host-Device Compatibility
Thoroughly tested for compatibility with LINK-PP systems to deliver easy deployment and stable connectivity.
Rigorous Testing Ensures Reliable SFP Performance
Rigorous validation delivers unmatched stability and ultra-low failure rates—even in extreme conditions. To learn more, visit the LINK-PP Test Support Center.
Optical Spectrum Test
Confirms exact wavelength control for dependable performance.
Eye Pattern Test
Eye diagram analysis guarantees high-fidelity data transmission.
Bit Error Rate Test
Rigorous BER testing ensures ultra-low error performance you can count on.
Temperature Test
Extreme temperature cycling verifies reliable operation.
Product Shipping for LINK-PP LS-SM552G-20C 2.5G SFP
LINK-PP ensures your modules arrive safely and promptly through comprehensive packaging and transport standards.
Anti-Static Protective Packaging
Static-dissipative packaging minimizes the risk of electrical damage.
Shock-Resistant Transport Protection
Reinforced packaging protects against drops and handling impacts.
Ideal for enterprise backbone extensions, telecom transmission systems, and data-center interconnects, the LINK-PP LS-SM552G-20C 2.5G SFP transceiver provides robust, low-latency optical links designed for expansion.
LS-SM552G-20C 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-SM552G-20C 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:
The LS-SM552G-20C features an ultra-low latency optical design with a Bit Error Rate (BER) better than 1E-12, fully compliant with IEEE 802.3z and Fibre Channel specifications. Its precision 1550nm DFB laser transmitter and pin-photodiode receiver deliver stable, jitter-free signal integrity even under sustained high-iops database syncs or 24/7 continuous SAN replication. The integrated DOM diagnostic chip tracks laser bias and power in real-time to alert network administrators before any physical degradation causes link flap. By
admin on
2025-02-19
A:
Every LINK-PP LS-SM552G-20C transceiver undergoes 100% individual factory testing prior to dispatch. Our QA process includes optical spectrum analysis, eye diagram testing, 100% real-switch compatibility verification on targeted OEM platform hardware, and thermal burn-in chamber testing. We back all transceivers with a 3-year limited warranty, full compliance certification (CE, FCC, RoHS, REACH), and lifetime technical support for EEPROM re-coding if you update your switch environment down the road. By
admin on
2025-01-18
A:
Most enterprise switch platforms (such as Cisco, Juniper, or Mikrotik) require manual speed configuration when inserting a 2.5G SFP module into a 10G SFP+ cage. You will typically need to set the port speed manually to 2500Mbps and disable auto-negotiation in the CLI to lock link status properly. When placed in a native 1G-only SFP port, the module will not step down to 1G as it is fixed-rate 2.5Gbps architecture. Always ensure your host switch hardware explicitly supports 2.5G/2.5Gbps SFP rate on that target interface. By
admin on
2024-08-16
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479042
434798
S***n
Japan
Verified
Purchase
5 .0
2026-05-27
Needed cost-effective 2.5Gbps 1550nm SFP transceivers for an enterprise server room refresh. LINK-PP modules reported full DDM diagnostics right away on our Ubiquiti and Cisco switches :-D
Please write comments with more than three
character.
479042
434788
C***s
Iran, Islamic Republic of
Verified
Purchase
5 .0
2026-03-14
Strict MSA compliance makes this 2.5G SFP transceiver a versatile addition to our multi-vendor staging kit. We validated 20km single mode fiber links across various building floors without requiring optical attenuators. Receiver sensitivity held stable at -17.5dBm across all test lines.
Please write comments with more than three
character.
479042
434785
S***s
Mexico
Verified
Purchase
5 .0
2026-03-05
Integrated these commercial grade 1550nm LC duplex SFP transceivers into our enterprise fiber distribution network. Attenuation over a 14km SMF span was minimal, and operating temperatures remained stable between 30℃ and 38℃ under peak network load. Ideal solution for commercial rack deployments.
Please write comments with more than three
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479042
434796
B***s
Belgium
Verified
Purchase
5 .0
2025-12-08
Bought 12 units for office campus patch panel expansion. Full MSA compliance ensured zero vendor lock-in issues across mixed brand switches. Will reorder! :-)
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character.
479042
434794
S***s
Macao
Verified
Purchase
5 .0
2025-10-31
Evaluated compatibility on Dell, HPE Aruba, and Juniper switches for a 2.5G Fibre Channel SAN interconnect. The LS-SM552G-20C modules synced immediately without requiring forced speed settings. DOM readings accurately displayed laser bias current and case temperature in the switch CLI =D
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479042
434787
E***r
Nepal
Verified
Purchase
4 .0
2025-10-24
The LS-SM552G-20C optics function perfectly at full 2.5Gbps speed across our 10km office fiber link. I deduct one star because the outer box had minor shipping wear, though the internal anti-static packaging kept the optics completely safe.
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479042
434799
C***s
Mexico
Verified
Purchase
5 .0
2025-07-07
As an IT infrastructure consultant, I deployed a batch of LS-SM552G-20C transceivers for a corporate campus fiber backbone spanning 16km. The 1550nm DFB optics delivered exceptional receiver sensitivity well within the -18dBm limit. Digital optical monitoring integrates flawlessly into our SNMP management tools. Highly recommended for enterprise systems integrators.
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479042
434791
M***s
Belarus
Verified
Purchase
5 .0
2024-11-21
Replaced expensive original brand transceivers with these LINK-PP 2.5Gbps 1550nm 20km optical modules in our datacenter racks. The duplex LC connectors latch securely and laser output measured +0.5dBm during commissioning. Zero bit error rate after a week-long burn-in test. Fantastic OEM alternative ;)
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479042
434783
M***s
Canada
Verified
Purchase
5 .0
2024-09-28
Upgraded our high-speed 2.5G NAS storage link using this LS-SM552G-20C. Transfer speeds are consistent with zero packet errors or link drops over 24 hours.
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479042
434793
H***s
Mexico
Verified
Purchase
5 .0
2024-07-02
Installed four LS-SM552G-20C modules to connect our main office rack to a satellite building 12km away. Signal budget is super clean and DOM telemetry reports -8dBm RX power.
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479042
434797
D***z
Poland
Verified
Purchase
4 .0
2024-03-13
Optical parameters are spot on and DOM readings match our handheld optical power meter nicely. Excellent 1550nm 20km transceivers, though shipment took two extra days to reach our facility in Chicago.
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479042
434782
N***h
Philippines
Verified
Purchase
5 .0
2024-01-30
Deployed 30 units across our regional branch office server rooms for 2.5G uplink connections. Real-time DDM diagnostic telemetry is essential for our ops team, and these modules reliably report laser power and voltage to PRTG. Outstanding build quality and top-notch value.
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character.
479042
434789
A***r
Sweden
Verified
Purchase
5 .0
2024-01-13
Flawless performance for our SMB enterprise core switch setup. DDM features report real-time light levels and supply voltage directly to our monitoring dashboard.
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