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LINK-PP LS-SM554G-40I SFP 4G/4.25G 1550nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
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LINK-PP LS-SM554G-40I SFP 4G/4.25G 1550nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)

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Product summary

Product
LINK-PP LS-SM554G-40I SFP 4G/4.25G 1550nm 40km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
SKU
185468
P/N
LS-SM554G-40I
Price
$ 102
Stock
890 in Stock
Sold
410
For Order Over $1000 Get $15.00 Off , Code: Linkpp15
For Order Over $3000 Get $50.00 Off , Code: Linkpp50
For Order Over $5000 Get $100.00 Off , Code: Linkpp100
New Users: $10 Coupon for Orders , Code: linkpp2610
28 Reviews
3 Questions
410 Sold
$ 102 0% OFF )
Free shipping. For wholesale pricing, please contact us directly.
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Unit Price :
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$ 102
100
$ 96.9
1000
$ 93.84
3000
$ 90.78
6000
$ 87.72
Manufacture: LINK-PP P/N: LS-SM554G-40I SKU: 185468
Compatible:
LINK-PP
Shipping:
Free Shipping
to United States via FedEx
Estimated delivery time : 3 - 10 days.
5-Year Warranty 30-Day Returns 30-Day Exchange
Warranty
  • Providing industry-leading 5-year warranty.
  • Read the table for details of all products' warranty.
Returns & Exchange
  • Refunds will be received about 5 business days after the receipt of returned items.
  • Items in stock for replacement can be shipped within 1 business day.
  • Read the full return policy for details.
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LINK-PP LS-SM554G-40I 4.25G SFP Specifications

The LINK-PP LS-SM554G-40I is a high-performance 4.25G SFP transceiver developed for long-distance telecommunications over single-mode fiber, particularly in challenging industrial situations. Its key specifications are a data throughput of 4.25 Gbps, a transmission range of 40 km, an operational wavelength of 1550 nm, and a duplex LC fiber interface.

LINK-PP Part Number LS-SM554G-40I 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 Support Yes
Receiver Sensitivity < -17.5dBm TX Power -2 to +4dBm
Industrial Temperature Range -40 to 85°C Protocols MSA Compliant

Key Features of LINK-PP LS-SM554G-40I 4.25G SFP

The LINK-PP LS-SM554G-40I SFP module offers dependable high-speed connectivity operating at speeds of up to 4.25 Gbps over single-mode fiber, enabling transmission distances reaching 40 km. It features Digital Optical Monitoring (DOM) for real-time performance data and a duplex LC connector for easy, low-loss installation.

LINK-PP LS-SM554G-40I Optical Module

Incorporating a DFB laser transmitter paired with a PIN photodiode receiver, this LINK-PP LS-SM554G-40I 4.25G SFP module’s architecture ensures precise signal transmission, exceptional optical performance, and robust thermal stability, delivering reliable operation in wide-temperature industrial environments.

LS-SM554G-40I: Reliable 4.25 Gbps Connectivity for Trusted Fibre Connectivity

The LINK-PP LS-SM554G-40I module supports data rates of up to 4.25 Gbps, providing reliable, high-speed, long-reach fiber network connectivity, even in mission-critical applications.

LS-SM554G-40I Module with 1550nm Wavelength

By operating at the 1550nm wavelength, the LINK-PP LS-SM554G-40I module reduces single-mode fiber attenuation and maintains strong signal integrity across extended distances.

LS-SM554G-40I Module Supporting 40km Transmission

The LINK-PP LS-SM554G-40I 4.25G SFP module transmits data up to 40 km over single-mode fiber, ideal for metropolitan area networks (MANs), campus backbones, and industrial facility connections.

LS-SM554G-40I Module with Duplex LC SMF Interface

The duplex LC interface streamlines cabling with separate Tx/Rx paths in a compact connector, fully supports single-mode fiber, and ensures stable, low-reflection connections that stay secure during installation, operation, and maintenance.

LS-SM554G-40I Module with DOM for Real-Time Monitoring

Its Digital Optical Monitoring (DOM) support allows you to access real-time data on temperature, voltage, laser bias current, and optical power levels, facilitating monitoring, speeding up troubleshooting, and enabling proactive maintenance.


LINK-PP LS-SM554G-40I 4.25G SFP Certification

Built upon ISO 9001-certified manufacturing excellence and holding CE, RoHS, and FCC compliance certifications, the LINK-PP module delivers a reliable, internationally compliant solution.

Optical Transceivers Testing

Each unit passes multiple quality checkpoints before shipment, verifying optical parameters, electrical characteristics, and environmental resilience.

LS-SM554G-40I Quality Certifications

Worldwide regulatory approvals bolster product credibility, ensuring lasting robustness and reliable network performance.

LS-SM554G-40I Certified for Reliable Host-Device Compatibility

Extensive validation procedures guarantee flawless integration across the full range of LINK-PP switching, routing, and networking equipment.


Rigorous Testing Ensures Reliable SFP Performance

Spectrum, eye pattern, BER, and temperature testing are among the multiple validation stages used to ensure reliable module performance. Further information is available at the LINK-PP Test Support Center.

Optical

Optical Spectrum Test

Guarantees accurate wavelength alignment and compliance with optical specifications.

Optical

Eye Pattern Test

Reviews waveform structure to maintain signal clarity and minimize noise.

Optical

Bit Error Rate Test

Verifies low error transmission for stronger network stability.

Optical

Temperature Test

Confirms consistent module operation even in harsh temperature conditions.


Product Shipping for LINK-PP LS-SM554G-40I 4.25G SFP

LINK-PP ensures that each module is ready for installation when it reaches the customer, supported by specialized logistics operations that protect the product and improve the speed and reliability of global delivery.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Prevents ESD damage, preserving product performance during transit and storage.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Uses robust packaging to prevent physical damage from handling and shipping stresses.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

Streamlines packing, quality checks, and dispatch for faster customer response.

Global Logistics and International Delivery

Global Logistics and International Delivery

Ensures reliable worldwide shipping with predictable arrival times.

LINK-PP LS-SM554G-40I 4.25G SFP Usage Demonstration

The LINK-PP LS-SM554G-40I 4.25G SFP is optimized for industrial environments, 4Gbps optical systems, 1x/2x/4x Fibre Channel storage networks, SONET telecom applications, and any long-haul optical link demanding 4.25 Gbps data rates over 40km of single-mode fiber.

LS-SM554G-40I 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

Pre-Sales Technical Consultation

Professional guidance to help you select the optimal LS-SM554G-40I module for your network design and application needs.

Compatibility Verification Support

Compatibility Verification Support

Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.

Deployment & Installation Assistance

Deployment & Installation Assistance

Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.

Long-Term Technical Assurance

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.

LINK-PP LS-SM554G-40I 4.25G SFP After-Sales Assurance

LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.

15 days

15-day no-reason return and refund

Free maintenance or replacement

Free replacement for dead-on-arrival (DOA) or defective items within the initial period

Free maintenance

 Free repair services for manufacturing defects throughout the warranty period

Limitations

Warranty exclusions and conditions apply

LINK-PP LS-SM554G-40I 4.25G SFP FAQ

Find clear answers below regarding compatibility, performance specifications, and application scenarios.

This compact industrial transceiver offers a 4.25 Gbps data rate, 1550 nm long-wavelength operation, 40 km reach over single-mode fiber, a duplex LC connector, and full DOM support for real-time performance monitoring.
It is designed exclusively for single-mode fiber (SMF).
It supports transmission distances up to 40 km under standard optical budget conditions.
It is commonly used in SANs (1x/2x/4x Fibre Channel), industrial automation, metropolitan area networks, campus backbones, telecom infrastructure, video surveillance backbones, and utility communication networks.

Model Comparison Table

LINK-PP

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David Smith
Australia
Verified Purchase
4 .0
2026-06-12
One anti-static bag wasn't sealed perfectly, but the module itself was in excellent condition. Passed all diagnostics and has been running reliably ever since. (^.^)
Brian Morgan
Romania
Verified Purchase
5 .0
2026-04-29
Installed on our Brocade SAN switch and the 4G Fibre Channel link came online immediately. DOM values look accurate and stable after several weeks of operation. Very satisfied. ^^
Benjamin Campbell
Singapore
Verified Purchase
5 .0
2026-04-07
We mixed these compatible modules with original OEM optics during a storage migration project. Interoperability was seamless, and all links synchronized immediately at 4.25Gbps Fibre Channel. Excellent choice for reducing maintenance costs without sacrificing reliability.
Stephen Moore
Japan
Verified Purchase
5 .0
2026-04-04
Installed this module in our disaster recovery SAN over a 40 km SMF connection. The 1550nm DFB optics maintained stable optical power throughout stress testing, and the DOM information made link verification much easier. We've experienced zero CRC errors after months of continuous operation.
Grace Murphy
India
Verified Purchase
5 .0
2026-02-17
Great compatibility with our existing SAN environment. Detected instantly without firmware changes. (⌒▽⌒)
Jonathan Davis
Sweden
Verified Purchase
4 .0
2026-02-14
The shipping box had a small dent, but every transceiver inside was well protected. Installation was smooth and performance has been flawless ever since. :)
Hailey Smith
Russian Federation
Verified Purchase
5 .0
2025-12-15
The industrial operating temperature (-40°C to +85°C) was the main reason we chose this model. It's been running inside an outdoor telecom cabinet for months with no instability, even during hot afternoons and freezing nights.
Mia Ramirez
Belarus
Verified Purchase
5 .0
2025-12-14
Outstanding quality.
Lauren Jones
Thailand
Verified Purchase
5 .0
2025-11-04
Excellent Fibre Channel optic! (^_^)/
Leah Wilson
United Arab Emirates
Verified Purchase
5 .0
2025-10-15
Purchased a dozen units for a storage network expansion. Every module passed testing on the first attempt, and none of our Fibre Channel switches reported compatibility warnings. Great value for enterprise deployments. (^_^)b
Austin Green
Finland
Verified Purchase
5 .0
2025-09-30
Deployment couldn't have been easier. Every module was recognized instantly by our Fibre Channel switches, and the Duplex LC interface fit perfectly with our existing cabling. Great experience overall. (^o^)/
Alexander Edwards
Libyan Arab Jamahiriya
Verified Purchase
5 .0
2025-09-01
We've installed more than twenty units across multiple data halls. Every transceiver reported accurate DDM/DOM values, and none of the switches logged compatibility alarms. For long-distance Fibre Channel storage links, these have exceeded our expectations. (ง •̀_•́)ง
Rachel Mitchell
Thailand
Verified Purchase
5 .0
2025-07-30
Works perfectly. :)
Christian Allen
Canada
Verified Purchase
5 .0
2025-07-09
Great price for an industrial 4G Fibre Channel SFP. Happy with the purchase. :]
Amelia Evans
Hungary
Verified Purchase
5 .0
2025-04-15
The -40°C to +85°C operating range made this an easy choice for our outdoor industrial cabinets. Even under extreme weather conditions, link stability has remained excellent and optical diagnostics continue to report healthy TX/RX levels.
Timothy Phillips
Russian Federation
Verified Purchase
5 .0
2025-01-31
Very impressed with the build quality. Clean LC connectors, stable Fibre Channel throughput, and excellent interoperability with our existing storage infrastructure. :)
Rachel Moore
Denmark
Verified Purchase
5 .0
2025-01-14
Using these on a 40 km single-mode fiber link between two manufacturing facilities. Link establishment was immediate, optical power levels stayed within specification, and the Duplex LC connectors fit perfectly. Couldn't ask for better reliability. (•̀ᴗ•́)و
Isabella Parker
Argentina
Verified Purchase
5 .0
2024-12-21
Exactly as described. :D
Scarlett Thompson
Indonesia
Verified Purchase
5 .0
2024-11-03
Reliable long-distance optic. Definitely buying again.
Gary Hill
Mexico
Verified Purchase
5 .0
2024-10-24
After comparing several 40 km 4G Fibre Channel SFP transceivers, this model offered the best balance of industrial temperature support, DOM monitoring, OEM compatibility, and price. We've now standardized on this module for new SAN expansion projects because it consistently delivers stable performance in both indoor data centers and harsh industrial environments. (≧▽≦)
Hailey Smith
Canada
Verified Purchase
5 .0
2024-10-09
Excellent OEM replacement. (•ᴗ•)
Mark Bell
United States
Verified Purchase
5 .0
2024-09-11
Everything worked right out of the box. No tuning required. (¬‿¬)
Scott Harris
Canada
Verified Purchase
5 .0
2024-08-15
Rock-solid performance.
Alexander Thompson
Argentina
Verified Purchase
4 .0
2024-07-11
Performance is excellent, although shipping took a little longer than expected. The modules themselves are high quality and work exactly as advertised. :P
Christian Walker
Libyan Arab Jamahiriya
Verified Purchase
5 .0
2024-06-02
Works flawlessly with our IBM storage equipment. (•̀ᴗ•́)
Steven Gonzalez
Cambodia
Verified Purchase
5 .0
2024-04-10
Reliable OEM-compatible SFP. Highly recommended for long-distance Fibre Channel links. (^▽^)
Samantha Sanchez
Thailand
Verified Purchase
5 .0
2024-02-20
We've been using these 1550nm 40km SFP Fibre Channel transceivers to connect two storage rooms across our industrial campus. Signal quality is excellent, latency remains low, and the optical diagnostics have been very helpful during routine maintenance. Definitely a reliable OEM alternative.
Elizabeth Taylor
Indonesia
Verified Purchase
5 .0
2024-01-15
We compared several compatible 4G Fibre Channel SFP modules before placing a bulk order. These offered the best combination of compatibility, stable DOM monitoring, industrial temperature support, and overall cost. They've worked flawlessly with Brocade, Cisco, and IBM storage equipment so far. (☞゚ヮ゚)☞
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