The LINK-PP LS-SM554G-40C is a 4.25G SFP transceiver built for long-reach links over single-mode fiber. Its key specifications include a 4.25 Gbps speed, a 40km reach, a 1550 nm wavelength, and a duplex LC interface.
LINK-PP Part Number
LS-SM554G-40C
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
4.25Gbps
Wavelength
1550nm
Max Cable Distance
40km
Connector
LC duplex
Media
SMF
Optical Components
DFB 1550nm
DOM
Supported
Receiver Sensitivity
< -17.5dBm
TX Power
-2 to +4dBm
Commercial Temperature Range
0 to 70°C
Protocols
MSA Compliant
Key Features of LINK-PP LS-SM554G-40C 4.25G SFP
The LINK-PP LS-SM554G-40C SFP transceiver delivers reliable high-speed connectivity at up to 4.25 Gbps over single-mode fiber, supporting transmission distances of up to 40 km. With integrated DOM support, it offers real-time optical performance monitoring, while the duplex LC connector ensures easy installation and a secure fiber connection.
LINK-PP LS-SM554G-40C Optical Module
The LINK-PP LS-SM554G-40C 4.25G SFP module features a DFB laser transmitter and a PIN photodiode receiver. It ensures precise signal transmission, outstanding optical performance, and strong thermal stability, remaining reliable even in demanding environments.
LS-SM554G-40C: Reliable 4.25 Gbps Connectivity for Trusted Fibre Connectivity
The LINK-PP LS-SM554G-40C module is designed for trusted long-reach fiber network connectivity. Its 4.25Gbps rate supports demanding optical links, making it a practical choice for data communication environments requiring consistent performance over distance.
LS-SM554G-40C Module with 1550nm Wavelength
Leveraging the 1550nm wavelength for low attenuation and high-quality long-haul transmission, this LINK-PP LS-SM554G-40C module is built for applications that value signal stability and reach over short-range compactness.
LS-SM554G-40C Module Supporting 40km Transmission
The LINK-PP LS-SM554G-40C 4.25G SFP module achieves up to 40km reach over standard single-mode fiber. This reach makes it a strong fit for medium-to long-haul links in telecom, datacom, and other fiber infrastructure.
LS-SM554G-40C Module with Duplex LC Interface
The duplex LC interface simplifies cabling by separating the transmit (Tx) and receive (Rx) paths. It also supports standard SMF and provides stable optical connections during installation and maintenance.
LS-SM554G-40C Module with DOM for Real-Time Monitoring
Thanks to its DOM capability, you can gain real-time visibility into temperature, voltage, and optical power, simplifying monitoring, troubleshooting, and preventive maintenance.
LINK-PP LS-SM554G-40C 4.25G SFP Certification
Leveraging ISO 9001 manufacturing excellence along with CE, RoHS, and FCC certifications, the LINK-PP module provides a reliable solution built for international markets.
LINK-PP modules are typically validated through performance and reliability checks to help ensure stable operation.
LS-SM554G-40C Quality Certifications
Global certification compliance strengthens product trust, supporting long-term durability and dependable network operation.
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-SM554G-40C Certified for Reliable Host-Device Compatibility
Through comprehensive compatibility validation, seamless interoperability is assured for all supported LINK-PP devices.
Rigorous Testing Ensures Reliable SFP Performance
Advanced inspection and validation procedures help ensure each SFP module delivers consistent connectivity and dependable optical output. See the LINK-PP Test Support Center for more details.
Optical Spectrum Test
Measures wavelength precision for dependable optical communication performance.
Eye Pattern Test
Validates waveform cleanliness to support smooth and stable signal output.
Bit Error Rate Test
Evaluates data transmission quality by confirming minimal bit loss.
Temperature Test
Ensures long-term reliability across a wide thermal operating range.
Product Shipping for LINK-PP LS-SM554G-40C 4.25G SFP
All LINK-PP modules reach their destinations prepared for straightforward installation, backed by a professional logistics system that ensures product integrity and optimizes delivery efficiency worldwide.
Anti-Static Protective Packaging
Reduces electrostatic dangers while maintaining product performance during shipment.
Shock-Resistant Transport Protection
Avoids physical harm by providing robust and secure shipment support.
Fast Order Processing and Dispatch
Offers quicker customer responses by streamlining packing and dispatch procedures.
Global Logistics and International Delivery
Guarantees dependable worldwide shipping and predictable delivery schedules.
The LINK-PP LS-SM554G-40C 4.25G SFP is suitable for 4Gbps optical systems, 1x/2x/4x Fibre Channel environments, and other long-distance optical links that require 40km SMF transmission at a 4.25 Gbps data rate.
LS-SM554G-40C 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-SM554G-40C 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.
LINK-PP provides comprehensive after-sales support to ensure smooth deployment and long-term operation of Low Data Rate Optical Modules.
No reason to return and refund within 15 days
Free maintenance or replacement within warranty period
Free maintenance within warranty period
Limitations
LINK-PP LS-SM554G-40C 4.25G SFP FAQ
Get the clarity you need below on compatibility, performance, and deployment scenarios.
This compact transceiver brings together 4.25Gbps speed, 1550nm long-wavelength operation, 40km reach on single-mode fiber, a duplex LC connector, and DOM monitoring capability.
It is designed to work with single-mode fiber, commonly known as SMF.
Under the right optical budget conditions, it supports transmission distances of up to 40km over standard single-mode fiber.
It sees frequent use in datacom, telecom, FTTx, wireless networks, WDM systems, carrier Ethernet, and other long-haul optical infrastructure.
A:
Absolutely. LINK-PP offers project-based pricing for volume orders, along with OEM/ODM services including customized EEPROM coding, private labels, logo printing, and customized packaging. Simply send us your required quantity and compatible switch models, and we'll prepare a competitive quotation for your project. By
admin on
2025-12-26
A:
Yes. The LS-SM554G-40C is the commercial-temperature version for standard enterprise environments. If your deployment requires operation in harsh conditions, LINK-PP also offers an industrial-grade version with an operating temperature range of -40°C to +85°C. Please contact our sales team for the recommended industrial model. By
admin on
2025-08-07
A:
Yes. The module supports Digital Optical Monitoring (DOM/DDM), allowing real-time monitoring of transmit power, receive power, temperature, supply voltage, and laser bias current. It complies with the SFP MSA, SFF-8472, and supports 1x/2x/4x Fibre Channel operation with data rates up to 4.25Gbps, providing reliable long-term performance for enterprise storage and SAN environments. By
admin on
2025-07-18
A:
Yes. The LS-SM554G-40C is manufactured in compliance with the SFP MSA standard and supports OEM-compatible coding. It has been successfully deployed with Cisco MDS, Brocade, IBM, QLogic, Emulex, and many other compatible Fibre Channel platforms. Most switches recognize the module automatically without additional configuration. If you're unsure about your device model, our technical team can verify compatibility before shipment. By
admin on
2024-03-23
A:
Yes. The LS-SM554G-40C is designed for transmission over standard OS2 single-mode fiber with a maximum reach of 40 km. It uses a Duplex LC optical connector and is suitable for long-distance Fibre Channel SAN, disaster recovery, storage replication, and enterprise backbone applications. By
admin on
2024-01-06
We installed these modules for a disaster recovery storage network connecting two buildings over single-mode fiber. The 1550nm optics delivered consistent throughput with zero unexpected link drops.
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482031
330727
Justin Rodriguez
Spain
Verified
Purchase
5 .0
2026-04-29
We've tested these modules with Brocade and Cisco MDS switches. Every transceiver was recognized immediately, and all Fibre Channel links came online without requiring firmware changes.
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482031
330728
Ella LastNames
Taiwan, Province of China
Verified
Purchase
5 .0
2025-10-20
We use these modules for storage replication between two data centers connected by 40 km of OS2 single-mode fiber. Installation was seamless, Fibre Channel throughput has remained consistent under heavy workloads, and DOM diagnostics greatly simplify preventive maintenance. Compared with original OEM optics, this module delivers outstanding reliability at a significantly lower cost.
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482031
330734
Daniel Torres
Libyan Arab Jamahiriya
Verified
Purchase
5 .0
2025-09-04
Deployment across multiple storage switches was quick and trouble-free. Every module established a stable 4.25Gbps Fibre Channel connection immediately after insertion.
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482031
330714
Brian Parker
Australia
Verified
Purchase
5 .0
2025-08-18
The 40 km transmission distance was exactly what our long-distance storage replication project required. Signal quality has remained excellent under continuous operation.
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482031
330739
Leah Rodriguez
Taiwan, Province of China
Verified
Purchase
5 .0
2024-12-10
Installed this 4G Fibre Channel SFP on a 40 km single-mode fiber link between two storage sites. The 1550nm optical signal remained stable, and DOM readings matched the expected values throughout commissioning.
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482031
330720
Rebecca Garcia
Brazil
Verified
Purchase
5 .0
2024-11-27
Excellent compatible replacement for branded optics. We reduced procurement costs while maintaining the same Fibre Channel performance and link stability.
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482031
330721
Kenneth Hill
Romania
Verified
Purchase
5 .0
2024-11-22
The Duplex LC interface fit perfectly with our existing OS2 fiber infrastructure. Installation was straightforward, and optical power remained well within specification.
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482031
330713
Brooke Phillips
United Arab Emirates
Verified
Purchase
5 .0
2024-08-30
Our engineering team evaluated several compatible 4G Fibre Channel transceivers before selecting this model. Stable optical output, reliable DOM monitoring, and consistent interoperability made it the best overall value for enterprise SAN deployments.
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482031
330737
Sophia Johnson
Argentina
Verified
Purchase
5 .0
2024-08-08
More than eighty units have now been deployed across our primary and backup storage networks. Every 1550nm 40 km Fibre Channel link passed acceptance testing, optical power levels closely matched the datasheet, and long-term operation has been completely stable. We'll continue standardizing on this model for future expansion.
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482031
330735
Morgan Garcia
Belarus
Verified
Purchase
5 .0
2024-05-25
After six months of continuous operation in our enterprise storage environment, these compatible 4G Fibre Channel SFP modules continue to perform flawlessly. The Duplex LC interface, 1550nm optics, 40 km transmission capability, accurate DOM monitoring, and excellent OEM compatibility have made them one of the most dependable optical transceivers we've deployed for mission-critical SAN infrastructure.
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482031
330715
Tyler Murphy
Argentina
Verified
Purchase
5 .0
2024-01-12
Running continuously in our enterprise SAN environment for several months. The 40 km connection remains stable, and DOM monitoring provides useful real-time diagnostics for maintenance.
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482031
330729
Anna Walker
Poland
Verified
Purchase
5 .0
2024-01-05
We've successfully deployed these modules with Cisco MDS, Brocade, IBM, and several OEM-compatible Fibre Channel switches. Compatibility has been excellent across all platforms.
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