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LS-SM551G-60C 1.25g sfp 1550nm 60km duplex lc dom smf optical transceiver module
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LINK-PP LS-SM551G-60C 1.25G SFP 1550nm 60km Duplex LC DOM SMF Optical Transceiver Module

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Product summary

Product
LINK-PP LS-SM551G-60C 1.25G SFP 1550nm 60km Duplex LC DOM SMF Optical Transceiver Module
SKU
197897
P/N
LS-SM551G-60C
Price
$ 17.5
Stock
1100 in Stock
Sold
980
Product URL
https://www.l-p.com/products/488431.htm
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
53 Reviews
4 Questions
980 Sold
$ 17.5 ( 0% OFF )
Free shipping. For wholesale pricing, please contact us directly.
Qty (pcs) :
Unit Price :
1
$ 17.5
100
$ 16.625
1000
$ 16.1
3000
$ 15.575
6000
$ 15.05
Manufacture: LINK-PP P/N: LS-SM551G-60C SKU: 197897
Compatible:
LINK-PP
Compatible P/N:
LS-SM311G-02C | 2km
LS-SM311G-02I | 2km
LS-SM311G-10C | 10km
LS-SM311G-10I | 10km
LS-SM311G-20C | 20km
LS-SM311G-20I | 20km
LS-SM311G-40AI | 40km
LS-SM311G-40C | 40km
LS-SM311G-40I | 40km
LS-SM551G-40C | 40km
LS-SM551G-40I | 40km
LS-SM551G-60C | 60km
LS-SM551G-60I | 60km
LS-SM551G-80C | 80km
LS-SM551G-80I | 80km
LS-SM551G-A0C | 100km
LS-SM551G-A0I | 100km
LS-SM551G-A2C | 120km
LS-SM551G-A2I | 120km
LS-SM551G-A6C | 160km
LS-SM551G-A6I | 160km
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-SM551G-60C 1.25G SFP Specifications

The LINK-PP LS-SM551G-60C is a high-performance SFP transceiver designed for 1.25Gbps Gigabit Ethernet applications. This commercial-grade module operates at a 1550nm wavelength, supporting long-haul transmissions up to 60km over single-mode fiber. It features a duplex LC interface, low power consumption, and full compliance with SFP MSA and SFF-8472 standards for seamless network integration and reliable operation.

LINK-PP Part Number LS-SM551G-60C 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 case temperature 0 to 70°C Protocols

SFF-8472 MSA Compliant, IEEE 802.3ah-2004

Key Features of LINK-PP LS-SM551G-60C 1.25G SFP

This module offers exceptional stability with its 1550nm DFB laser and PIN photodiode. Key highlights include hot-pluggable capability, a single +3.3V power supply, and integrated Digital Optical Monitoring (DOM). It ensures robust performance in temperatures ranging from 0 to 70°C, making it ideal for diverse enterprise and telecom environments.

LINK-PP LS-SM551G-60C 1.25G SFP Optical Module

As a cost-effective optical solution, this 1.25G SFP module provides superior signal integrity for long-distance networking. Its compact design and standardized interface allow for easy deployment in high-density switches and routers, ensuring efficient data throughput.

LS-SM551G-60C: 1Gbps Connectivity for Wireless Access Point (WAP) Backhaul

The LS-SM551G-60C is perfectly suited for WAP backhaul applications, delivering stable 1Gbps bandwidth over extended distances. This ensures high-speed wireless coverage remains consistent even when access points are located far from the central data core.

LS-SM551G-60C Module with 1550nm Wavelength

Utilizing the 1550nm wavelength, this module minimizes signal attenuation during long-haul data transmission. This specific wavelength is optimized for single-mode fiber, providing the necessary optical budget to maintain clear communication over vast network infrastructures.

LS-SM551G-60C Module Supporting 60km Transmission

Engineered for long-range connectivity, this SFP module supports a maximum cable distance of 60km. It effectively bridges geographically dispersed sites, making it an essential component for metropolitan area networks and large-scale industrial campus backbones.

LS-SM551G-60C Module with Duplex LC Interface

Featuring a standardized duplex LC connector, the LS-SM551G-60C ensures secure and easy fiber connections. This industry-standard interface guarantees compatibility with a wide range of patch cables, simplifying installation and reducing potential signal loss at connection points.

LS-SM551G-60C Module with DOM for Real-Time Monitoring

The integrated Digital Optical Monitoring (DOM) allows administrators to track real-time parameters such as temperature, voltage, and optical power. This proactive monitoring capability helps identify potential issues before they lead to network downtime or hardware failure.

LINK-PP LS-SM551G-60C 1.25G SFP Certification

This transceiver is manufactured under strict quality controls, meeting international safety and environmental standards. It is fully compliant with RoHS and CE regulations, ensuring a safe and eco-friendly networking solution.

Optical Transceivers Testing

LS-SM551G-60C Quality Testing Program

LINK-PP implements a comprehensive quality testing program for every LS-SM551G-60C module. Each unit undergoes rigorous performance validation to ensure it meets or exceeds the required technical specifications before leaving the factory.

LS-SM551G-60C Quality Certifications

The module holds various industry-recognized certifications, reflecting LINK-PP's commitment to excellence. These certifications validate the product's reliability, safety, and performance consistency across all production batches and deployment scenarios.

ISO9001
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
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.
ISO14001
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
ISO 45001 is a global standard that sets out the requirements for an occupational health and safety management system (OH&SMS).
RECH
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.
CE
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.
FCC
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
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.
UKCA
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
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-60C Certified for Reliable Host-Device Compatibility

Extensive interoperability testing ensures that the LS-SM551G-60C is compatible with a broad range of host devices. It functions flawlessly across major networking brands, providing a truly versatile plug-and-play experience.

Rigorous Testing Ensures Reliable SFP Performance

Each SFP module undergoes a series of specialized tests to guarantee long-term reliability. These procedures ensure the module maintains peak performance under various operational stresses.

Optical

Optical Spectrum Test

This test verifies the 1550nm wavelength and spectral width, ensuring precise optical output and minimal dispersion.

Optical

Eye Pattern Test

The eye pattern test evaluates signal quality and timing jitter, ensuring the transmitter delivers a clean signal.

Optical

Bit Error Rate Test

This procedure measures the module's ability to transmit data without errors, confirming its high sensitivity.

Optical

Temperature Test

Modules are tested across their full operating range to ensure stability and performance consistency in various environments.

Product Shipping for LINK-PP LS-SM551G-60C 1.25G SFP

Our logistics process is optimized to ensure your order arrives safely and promptly. We prioritize secure handling and efficient dispatch for every customer.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Each module is individually sealed in an anti-static bag to prevent electrical damage.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Durable outer packaging provides superior protection against physical impacts and vibrations during transit.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

Our team ensures rapid processing and immediate dispatch, minimizing lead times for your orders.

Global Logistics and International Delivery

Global Logistics and International Delivery

We offer reliable international shipping, ensuring your LINK-PP modules reach you quickly worldwide.

LINK-PP LS-SM551G-60C 1.25G SFP Usage Demonstration

The LS-SM551G-60C is simple to use: just insert the module into an SFP port and connect your LC fiber. Its hot-swappable nature allows for immediate network expansion without any service interruption.

LS-SM551G-60C 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

Pre-Sales Technical Consultation

Professional technical guidance to help customers select the most suitable LS-SM551G-60C modules based on network architecture and application requirements.

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-SM551G-60C 1.25G 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-SM551G-60C 1.25G SFP FAQ

Find quick answers to frequently asked questions regarding the LS-SM551G-60C 1.25G SFP optical module here.

This 1.25G SFP module supports long-haul data transmission up to 60km over single-mode fiber cables.
Yes, it includes integrated DOM support for real-time monitoring of temperature, voltage, and optical power levels.
You should use single-mode fiber (SMF) cables with duplex LC connectors for optimal 60km performance.
Yes, it features a hot-pluggable SFP footprint, allowing installation or removal without powering down the host.

Model Comparison Table

LS-SM551G-60C
Current Model
LS-SM551G-60C
LS-MM311G-02AC
LS-MM311G-02AC
LS-MM851G-02C
LS-MM851G-02C
LS-MM311G-02AI
LS-MM311G-02AI
LS-MM851G-02I
LS-MM851G-02I
Compatible
LINK-PP
LINK-PP
LINK-PP
LINK-PP
LINK-PP
Data Rate (Max)
1.25Gbps
1.25Gbps
1.25Gbps
1.25Gbps
1.25Gbps
Wavelength
1550nm
1310nm
850nm
1310nm
850nm
Connector
Duplex LC
Duplex LC
Duplex LC
Duplex LC
Duplex LC
Cable Distance (Max)
60km
2km
2km
2km
2km
Cable Type
SMF
MMF
MMF
MMF
MMF
TX Power
0 to +5dBm
-12 to -3dBm
-9 to 0dBm
-12 to -3dBm
-9 to 0dBm
Receiver Sensitivity
-26dBm
-30dBm
-18dBm
-30dBm
-18dBm
Operating Temperature
0 to 70°C
0 to 70°C
0 to 70°C
-40 to 85°C
-40 to 85°C
Form Factor
SFP
SFP
SFP
SFP
SFP
Transmitter Type
DFB
FP
VSCEL
FP
VSCEL
Receiver Type
PIN
PIN
PIN
PIN
PIN
DOM Support
Yes
Yes
Yes
Yes
Protocols
SFF-8472 MSA Compliant, IEEE 802.3ah-2004
SFF-8472 MSA IEEE 802.3
IEEE 802.3z, SFF-8472, FC-PI, SFP MSA (INF-8074i) Compliant
SFF-8472 MSA IEEE 802.3
IEEE 802.3z, SFF-8472, FC-PI, SFP MSA (INF-8074i) Compliant
Action

LINK-PP

  1. 1G SFP Transceiver

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M***s
Spain
Verified Purchase
5 .0
2026-05-23
Works exactly as spec'd for 0-70°C commercial use. Reliable 1.25G SFP 1550nm 60km module!
119 Helpful vote Comments
L***t
Germany
Verified Purchase
4 .0
2026-04-22
Delivery took an extra day. Otherwise, this Duplex LC DOM SMF transceiver is solid.
106 Helpful vote Comments
K***r
India
Verified Purchase
5 .0
2026-03-15
Top-notch 60km SFP module for enterprise routing.
161 Helpful vote Comments
A***g
Finland
Verified Purchase
5 .0
2026-03-09
Grabbed a batch for our data center mass deployment. They synced up instantly with our mixed Netgear and Ubiquiti gear. The single-mode fiber LC connections are extremely snug.
95 Helpful vote Comments
T***s
Argentina
Verified Purchase
5 .0
2026-03-07
Reliable long-haul data transmission SFP. ^_^
68 Helpful vote Comments
D***g
Singapore
Verified Purchase
5 .0
2026-01-20
Paired this 1.25G optical transceiver with my home 10G NAS for a remote backup link. The -26dBm receiver sensitivity handles the SMF run flawlessly without drops.
72 Helpful vote Comments
J***n
Hong Kong
Verified Purchase
5 .0
2026-01-05
Duplex LC DOM SMF specs are spot-on!
113 Helpful vote Comments
D***e
Portugal
Verified Purchase
5 .0
2026-01-01
Solid build quality. The single-mode fiber optic transceivers survived our rigorous lab tests.
156 Helpful vote Comments
B***n
Spain
Verified Purchase
5 .0
2025-12-09
Flawless OEM compatibility! Plugged right into our Juniper gear with zero MSA warnings. ✅
80 Helpful vote Comments
C***z
Czech Republic
Verified Purchase
5 .0
2025-11-30
Good 1.25Gbps throughput for our base station backhaul. Duplex LC clicks in perfectly.
181 Helpful vote Comments
C***s
Malaysia
Verified Purchase
5 .0
2025-11-20
DOM features work great on my switch!
85 Helpful vote Comments
S***n
Denmark
Verified Purchase
5 .0
2025-11-13
Perfect 1550nm wavelength match for our SMF.
120 Helpful vote Comments
B***h
Poland
Verified Purchase
5 .0
2025-10-09
Real-time DOM support is a lifesaver for our remote outdoor cabinet troubleshooting.
149 Helpful vote Comments
R***t
Russian Federation
Verified Purchase
5 .0
2025-06-13
TX/RX levels are perfectly within spec. ✌️
125 Helpful vote Comments
S***s
New Zealand
Verified Purchase
5 .0
2025-06-03
The entire team was super helpful ,It was delivered very Fast and work perfectly with my switch. I would definitely buy from l-p.com again.
17 Helpful vote Comments
P***h
Mexico
Verified Purchase
5 .0
2025-05-02
The order process went well, and I think I received a good value for the item I purchased. It was delivered as scheduled. I wish I could have received a better deal on the warrenty of my product. I like having the extra warrenty, but if the cost is high, I do not get it., Thanks for your help, providing me with a great shopping experance.
40 Helpful vote Comments
J***y
Morocco
Verified Purchase
5 .0
2025-04-26
Absolutely professional! The service on both the sales and after-sales sides have been timely and supportive.
82 Helpful vote Comments
R***h
New Zealand
Verified Purchase
5 .0
2025-04-25
Great site, easy to use.
15 Helpful vote Comments
D***r
Romania
Verified Purchase
5 .0
2025-04-20
Super quick and efficient shipping - even to Australia.
43 Helpful vote Comments
M***s
Indonesia
Verified Purchase
5 .0
2025-04-09
Clean Gigabit Ethernet optical transceiver signal. ✨
149 Helpful vote Comments
C***g
Taiwan, Province of China
Verified Purchase
4 .0
2025-03-27
Box was slightly dented upon arrival, but the 1.25G SFP 1550nm modules work flawlessly!
136 Helpful vote Comments
R***y
Thailand
Verified Purchase
5 .0
2025-02-21
very responsive, competitive, and reliable.
63 Helpful vote Comments
M***n
Italy
Verified Purchase
5 .0
2025-02-07
Deployed these 1550nm 60km modules for our campus fiber network. DDM monitoring via our Cisco switches shows excellent rx/tx levels. Perfect Gigabit Ethernet optical transceiver for long-haul links!
185 Helpful vote Comments
N***n
Costa Rica
Verified Purchase
5 .0
2025-01-26
Great replacement modules for our legacy network switches. Easy hot-pluggable installation, no hassle.
90 Helpful vote Comments
P***s
Italy
Verified Purchase
5 .0
2025-01-23
Excellent bulk pricing for enterprise procurement. The 1550nm DFB laser runs very cool.
104 Helpful vote Comments
M***r
United Kingdom
Verified Purchase
5 .0
2025-01-19
Best OEM compatible 1G SFP I've tried.
64 Helpful vote Comments
J***r
Kazakhstan
Verified Purchase
5 .0
2024-12-21
Tested the LS-SM551G-60C on an outdoor WAP backhaul setup. Even near 70°C peak summer heat, the SFF-8472 MSA compliant link stayed stable. Great OEM compatible 1G SFP. ☀️
152 Helpful vote Comments
M***z
Mexico
Verified Purchase
5 .0
2024-12-13
Fast shipping, standard SFF-8472 protocol works fine. ⚡
151 Helpful vote Comments
J***r
Canada
Verified Purchase
5 .0
2024-11-30
The prices were extremely reasonable and there was a huge range of products to chose from.
12 Helpful vote Comments
A***t
Turkey
Verified Purchase
5 .0
2024-11-25
Best supplier!
70 Helpful vote Comments
K***n
Spain
Verified Purchase
5 .0
2024-11-15
Handles max cable distance effortlessly. O_O
132 Helpful vote Comments
M***z
Thailand
Verified Purchase
5 .0
2024-11-09
Awesome long-haul data transmission SFP. Pushed 55km without issues on our telecom ring.
186 Helpful vote Comments
P***o
United States
Verified Purchase
4 .0
2024-11-09
I love shopping for new/refurbished hard drives from this site.
29 Helpful vote Comments
N***i
Morocco
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5 .0
2024-10-25
the ordering is painless customer service is excellent
16 Helpful vote Comments
A***n
Taiwan, Province of China
Verified Purchase
5 .0
2024-10-07
Great value for data center mass deployment.
156 Helpful vote Comments
C***e
Nepal
Verified Purchase
5 .0
2024-08-02
very happy with the purchases at fs.com and grateful for the good work!
74 Helpful vote Comments
M***n
Germany
Verified Purchase
5 .0
2024-05-31
Everything went very smoothly and I was extremely satisfied.
43 Helpful vote Comments
E***g
United States
Verified Purchase
5 .0
2024-05-24
Good value and free shipping, excellent job!Link-pp has become my first choice when I need 10/25/40G Transceiver Modules products.
13 Helpful vote Comments
K***m
Singapore
Verified Purchase
5 .0
2024-05-01
I purchased 40G Transceiver Modules several months ago, it works well so far. I was totally satisfied with it. This time, I bought this kind of 100G Optical Transceiver Module to work with my new equipment.Hope it is also very compatible.
29 Helpful vote Comments
C***n
United States
Verified Purchase
5 .0
2024-03-08
We have always been pleased with the service and pricing from LINK-PP. Our account manager has been very helpful in finding us the hardware needed in the time needed and at the price needed.
28 Helpful vote Comments
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LS-SM551G-60C 1.25g sfp 1550nm 60km duplex lc dom smf optical transceiver module

LINK-PP LS-SM551G-60C 1.25G SFP 1550nm 60km Duplex LC DOM SMF Optical Transceiver Module

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