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LINK-PP LS-SM311G-02C 1.25G SFP 1310nm 2km Duplex LC DOM SMF Optical Transceiver Module
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LINK-PP LS-SM311G-02C 1.25G SFP 1310nm 2km Duplex LC DOM SMF Optical Transceiver Module

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Product summary

Product
LINK-PP LS-SM311G-02C 1.25G SFP 1310nm 2km Duplex LC DOM SMF Optical Transceiver Module
SKU
197940
P/N
LS-SM311G-02C
Price
$ 5.5
Stock
990 in Stock
Sold
1.1K
Product URL
https://www.l-p.com/products/488474.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
52 Reviews
4 Questions
1.1K Sold
$ 5.5 ( 0% OFF )
Free shipping. For wholesale pricing, please contact us directly.
Qty (pcs) :
Unit Price :
1
$ 5.5
100
$ 5.225
1000
$ 5.06
3000
$ 4.895
6000
$ 4.73
Manufacture: LINK-PP P/N: LS-SM311G-02C SKU: 197940
Compatible:
Cisco
LINK-PP
Adtran
Alcatel-Lucent
Allied Telesis
Arista
Avaya
Brocade
Calix
Ciena
D-Link
Dell
Extreme
FS
Fortinet
Generic
H3C
IBM
Intel
Juniper
NVIDIA/Mellanox
Netgear
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.
Stock:
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LINK-PP LS-SM311G-02C 1.25G SFP Specifications

The LINK-PP LS-SM311G-02C is a high-performance Small Form-factor Pluggable (SFP) transceiver module engineered for reliable 1.25Gbps data communications over single-mode fiber. This hot-pluggable module fully complies with SFP MSA and SFF-8472 industry specifications. Operating under a single +3.3V power supply, it features a stable 1310nm FP laser transmitter and integrated digital diagnostic monitoring functions.

LINK-PP Part Number LS-SM311G-02C Vendor Name LINK-PP
Form Factor SFP Max Data Rate 1.25Gbps
Wavelength 1310nm Max Cable Distance 2km
Connector Duplex LC Media SMF
Transmitter Type FP Receiver Type

PIN
TX Power -12 to -3dBm RX Power -23 to -1dBm
Receiver Sensitivity <-23dBm DOM Support Yes
Operating Temperature Range 0 to 70°C Protocols

SFF-8472 MSA Compliant, IEEE 802.3ah-2004

Key Features of LINK-PP LS-SM311G-02C 1.25G SFP

The LINK-PP LS-SM311G-02C transceiver incorporates cutting-edge technology to provide superior, robust networking capabilities. This module delivers high efficiency, hot-swappable convenience, and precise real-time system tracking. It serves as a dependable, compact hardware solution for various modern high-speed telecommunication architectures and enterprise network applications.

LINK-PP LS-SM311G-02C 1.25G SFP Optical Module

The LS-SM311G-02C optical module features a hot-pluggable SFP footprint for rapid field deployments. It integrates a reliable 1310nm FP laser transmitter and a PIN photodetector preamplifier to satisfy Class I laser safety regulations.

LS-SM311G-02C: 1G Connectivity for Fiber Channel applications

Specifically designed for high-speed storage area networks, the LS-SM311G-02C provides stable 1G optical connectivity. It is perfectly optimized for 1.063Gbps Fiber Channel applications, ensuring highly efficient and continuous data transfers.

LS-SM311G-02C Module with 1310nm Wavelength

Operating at a precise 1310nm center wavelength, this SFP transceiver utilizes its integrated FP laser transmitter to minimize dispersion. The 1310nm optical window delivers excellent signal performance across single-mode fiber infrastructure.

LS-SM311G-02C Module Supporting 2km Transmission

By utilizing premium single-mode fiber (SMF), the LS-SM311G-02C module extends your network reach up to 2km. This long-distance capability is highly ideal for interconnecting localized enterprise switches and telecom equipment.

LS-SM311G-02C Module with Duplex LC Interface

Equipped with an industry-standard duplex LC receptacle connector, the module guarantees exceptional structural connection reliability. The compact LC interface maximizes patch panel space efficiency and facilitates clean fiber cable management.

LS-SM311G-02C Module with DOM for Real-Time Monitoring

Featuring advanced Digital Diagnostic Monitoring (DOM), this SFP allows real-time monitoring through a 2-wire interface. Network operators can easily track critical metrics, including module temperature, voltage, and optical transceiver power.

LINK-PP LS-SM311G-02C 1.25G SFP Certification

The LINK-PP LS-SM311G-02C undergoes strict standardization and regulatory assessments to guarantee compliance with international electronic, environmental, and network safety parameters. These rigorous certifications assure enterprise clients of premium hardware safety and absolute manufacturing integrity.

Optical Transceivers Testing

LS-SM311G-02C Quality Testing Program

The LS-SM311G-02C undergoes a rigorous quality testing program. We strictly evaluate every module's electrical and optical characteristics to ensure complete adherence to professional networking requirements.

LS-SM311G-02C Quality Certifications

Manufactured with strict safety awareness, the LS-SM311G-02C transceiver complies with RoHS standards. It is fully certified under Class I laser safety guidelines and carries international market marks.

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-SM311G-02C Certified for Reliable Host-Device Compatibility

Built to meet SFP Single-Source Agreements, the LS-SM311G-02C ensures widespread hardware integration. It is certified for seamless plug-and-play compatibility across global switches, routers, and host network devices.

Rigorous Testing Ensures Reliable SFP Performance

LINK-PP subjects the LS-SM311G-02C to thorough quality assurance protocols, verifying that every single component delivers absolute stability and elite performance.

Optical

Optical Spectrum Test

Precise spectrum analyzers monitor the 1310nm FP laser to verify excellent center wavelength stability.

Optical

Eye Pattern Test

Automated eye pattern analysis validates clean optical waveforms, transmitter timing, and excellent extinction ratios.

Optical

Bit Error Rate Test

Modules undergo rigorous data stress testing to confirm flawless data reception sensitivity down to -23dBm.

Optical

Temperature Test

Thermal chambers guarantee stable transceiver functionality across the entire standard 0°C to 70°C case range.

Product Shipping for LINK-PP LS-SM311G-02C 1.25G SFP

Our optimized shipping system ensures that the LS-SM311G-02C arrives at your facility quickly, safely, and in perfect operational condition.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Each SFP module is safely enclosed within a specialized anti-static ESD shield bag.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Custom-molded, shock-resistant padding safeguards the delicate optical interfaces against heavy transport impacts.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

Orders are quickly processed through our automated warehouse systems to ensure immediate dispatch.

Global Logistics and International Delivery

Global Logistics and International Delivery

We leverage premier international shipping carriers to provide fast, reliable worldwide delivery.

LINK-PP LS-SM311G-02C 1.25G SFP Usage Demonstration

To connect your hardware, simply slide the hot-pluggable LS-SM311G-02C directly into an active SFP port on your switch. Remove the dust plug and attach a duplex LC single-mode fiber patch cord to establish an immediate 1.25Gbps link.

LS-SM311G-02C 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-SM311G-02C 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-SM311G-02C 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-SM311G-02C 1.25G SFP FAQ

Find quick answers below regarding the specifications of this 1.25G SFP transceiver.

It requires a standard single-mode fiber (SMF) cable with duplex LC connectors.
This optical module supports a maximum transmission distance of up to 2km.
Yes, it features integrated Digital Diagnostic Monitoring (DDM/DOM) via an I2C interface.
It supports up to 1.25Gbps for Gigabit Ethernet and Fiber Channel.

Model Comparison Table

LS-SM311G-02C
Current Model
LS-SM311G-02C
LS-MM311G-02AC
LS-MM311G-02AC
LS-MM311G-02AI
LS-MM311G-02AI
LS-MM851G-02C
LS-MM851G-02C
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
1310nm
1310nm
1310nm
850nm
850nm
Connector
Duplex LC
Duplex LC
Duplex LC
Duplex LC
Duplex LC
Cable Distance (Max)
2km
2km
2km
2km
2km
Cable Type
SMF
MMF
MMF
MMF
MMF
TX Power
-12 to -3dBm
-12 to -3dBm
-12 to -3dBm
-9 to 0dBm
-9 to 0dBm
Receiver Sensitivity
-23 to -1dBm
-30dBm
-30dBm
-18dBm
-18dBm
Operating Temperature
0 to 70°C
0 to 70°C
-40 to 85°C
0 to 70°C
-40 to 85°C
Form Factor
SFP
SFP
SFP
SFP
SFP
Transmitter Type
FP
FP
FP
VSCEL
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
SFF-8472 MSA IEEE 802.3
IEEE 802.3z, SFF-8472, FC-PI, SFP MSA (INF-8074i) Compliant
IEEE 802.3z, SFF-8472, FC-PI, SFP MSA (INF-8074i) Compliant
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LINK-PP

  1. 1G SFP Transceiver
  2. SFP Transceiver

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M***g
Chile
Verified Purchase
5 .0
2026-04-24
Upgraded our storage area networks with this 1.063Gbps Fiber Channel transceiver. Rock solid!
156 Helpful vote Comments
R***n
Russian Federation
Verified Purchase
5 .0
2026-04-13
Solid 1.25Gbps link over single-mode fiber.
256 Helpful vote Comments
R***l
Panama
Verified Purchase
5 .0
2026-03-28
Used for a base station backhaul link. The 0 to 70°C range handles well.
231 Helpful vote Comments
S***l
Ireland
Verified Purchase
5 .0
2026-01-26
Works flawlessly with my Juniper gear. 1.25G SFP module compatibility is strictly promised.
134 Helpful vote Comments
M***g
United Kingdom
Verified Purchase
5 .0
2026-01-07
These duplex LC transceivers saved our budget. Great value for datacenter batch deployments!
85 Helpful vote Comments
M***z
Chile
Verified Purchase
5 .0
2025-12-10
Tested the 1310nm Tx/Rx on Arista and Dell. Multibrand OEM compatibility is perfect!
150 Helpful vote Comments
R***g
Bolivia
Verified Purchase
5 .0
2025-09-21
Great Cisco compatible SFP for homelab setups.
239 Helpful vote Comments
J***n
United States
Verified Purchase
5 .0
2025-09-05
Good optical transceiver power. LC connectors snap in tightly to our patch panels.
179 Helpful vote Comments
R***s
Saudi Arabia
Verified Purchase
5 .0
2025-08-15
Cost-effective gigabit fiber solution for batch deployments.
130 Helpful vote Comments
A***u
United States
Verified Purchase
5 .0
2025-07-30
Quality as good as this more costly models, good spec, solid build and tight fit, I have re-purchased these. Recommended. But I hope next time, I could get some discount.
24 Helpful vote Comments
K***s
Poland
Verified Purchase
5 .0
2025-07-15
Very nice sales to speak to and knowledgeable on the products they sell!
95 Helpful vote Comments
J***e
Ireland
Verified Purchase
5 .0
2025-06-25
Great for extending our Homelab NAS over SMF. The commercial 0-70°C operating temperature is stable in our indoor rack. Very low power draw at 3.3V, highly recommend for B2B purchases.
209 Helpful vote Comments
M***e
Spain
Verified Purchase
5 .0
2025-06-21
Super customer experience in terms of Fast delivery. Delivered as promised.
16 Helpful vote Comments
M***e
France
Verified Purchase
5 .0
2025-06-15
DDM monitoring works perfectly. Highly recommended!
79 Helpful vote Comments
J***k
France
Verified Purchase
5 .0
2025-05-15
Perfect duplex LC fit for Netgear switches.
79 Helpful vote Comments
A***i
United States
Verified Purchase
5 .0
2025-05-15
Good pricing and Fast shipping. Very good website and easy to find products I was looking for.
48 Helpful vote Comments
M***s
Ecuador
Verified Purchase
4 .0
2025-05-06
Box was slightly crushed on arrival, but the 1.25G SFP modules work flawlessly.
166 Helpful vote Comments
I***v
United Kingdom
Verified Purchase
5 .0
2025-04-30
my customer is very happy with these 10/25/40G Transceiver Modules\'s and they cost him a fraction of the price of Pulse\'s 10/25/40G Transceiver Modules
65 Helpful vote Comments
D***z
Russian Federation
Verified Purchase
5 .0
2025-04-24
Fast Tx/Rx speeds. Will definitely buy again!
146 Helpful vote Comments
D***k
Ukraine
Verified Purchase
5 .0
2025-04-22
Nice operating temp stability at 70°C.
64 Helpful vote Comments
A***t
Bolivia
Verified Purchase
5 .0
2025-04-17
SFF-8472 MSA compliant, works exactly as described.
134 Helpful vote Comments
P***e
Japan
Verified Purchase
5 .0
2025-03-29
Deployed these for a campus fiber network using single-mode fiber. The 1310nm FP laser transmitter provides excellent signal integrity near the 2km limit. Way better than generic OEM module alternatives!
124 Helpful vote Comments
R***s
Macao
Verified Purchase
5 .0
2025-03-26
Flawless 1310nm FP laser transmission performance!
152 Helpful vote Comments
C***a
Ireland
Verified Purchase
5 .0
2025-02-27
These Optical Transceiver Modules worked as advertised.
55 Helpful vote Comments
J***z
United States
Verified Purchase
5 .0
2025-02-13
Usually next day delivery and all my orders been correct. Also the Optical Transceiver Module are protected nicely in individual bags. Prices are also very competitive and the wide choices are an added bonus.
84 Helpful vote Comments
L***s
Austria
Verified Purchase
5 .0
2025-02-08
Pulled a 2km SMF run between buildings. Link came up instantly without drops.
259 Helpful vote Comments
P***k
Philippines
Verified Purchase
5 .0
2025-01-25
First order on this website. It is very easy to find what I need and place the orders, will see how Fast it ships and if the product is as advertised.
77 Helpful vote Comments
D***r
France
Verified Purchase
5 .0
2025-01-11
Needed reliable 1.25Gbps optical modules for our multi-brand environment. Plugged these into Ubiquiti, Brocade, and H3C gear without any MSA protocol warnings. Outstanding Tx/Rx sensitivity and minimal optical dispersion.
230 Helpful vote Comments
D***z
Singapore
Verified Purchase
5 .0
2024-11-25
through the I2C interface. Completely transparent to Cisco switches.
210 Helpful vote Comments
P***s
Morocco
Verified Purchase
5 .0
2024-11-02
I am happy with the product. I'm not happy about how much the shipping cost is
119 Helpful vote Comments
M***s
Ecuador
Verified Purchase
5 .0
2024-10-12
Plug and play 2km SMF LC transceiver!
124 Helpful vote Comments
R***S
Spain
Verified Purchase
5 .0
2024-09-21
really great services
76 Helpful vote Comments
B***k
Philippines
Verified Purchase
5 .0
2024-09-04
Satisfied with the Sfp Cage! Great service and good quality!
49 Helpful vote Comments
J***o
Mexico
Verified Purchase
5 .0
2024-05-18
I had a good experience with Link-PP. Hope to do more business in the future.
19 Helpful vote Comments
S***o
Netherlands
Verified Purchase
5 .0
2024-04-26
Very happy with everything! I will come again.
48 Helpful vote Comments
M***n
Canada
Verified Purchase
5 .0
2024-03-03
Great store, I enjoy visiting. Great selection, really good prices.
105 Helpful vote Comments
L***n
Russian Federation
Verified Purchase
5 .0
2024-02-28
Competitive pricing. Fast, easy, efficient and secure online shopping
71 Helpful vote Comments
V***e
Hungary
Verified Purchase
5 .0
2024-02-06
Good quality and a true plug and play experience!
124 Helpful vote Comments
V***i
Lithuania
Verified Purchase
5 .0
2024-01-16
The transaction and delivery went very Fast and precise.
54 Helpful vote Comments
R***e
Russian Federation
Verified Purchase
5 .0
2023-12-18
Supper Price Fast shipping Thank you
75 Helpful vote Comments
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LINK-PP LS-SM311G-02C 1.25G SFP 1310nm 2km Duplex LC DOM SMF Optical Transceiver Module

LINK-PP LS-SM311G-02C 1.25G SFP 1310nm 2km Duplex LC DOM SMF Optical Transceiver Module

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