The LINK-PP LS-SM311G-40AI is a high-performance, small form-factor pluggable optical transceiver engineered for dual-rate data transmissions. Operating over a reliable 1310nm distributed feedback laser, this single-mode module delivers consistent 1.25Gbps network connectivity across extended distances. Built with an integrated PIN photodiode and trans-impedance preamplifier, it guarantees robust signal processing for critical networking infrastructure.
LINK-PP Part Number
LS-SM311G-40AI
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1310nm
Max Cable Distance
40km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
-5 to 0dBm
RX Power
-23 to -1dBm
Receiver Sensitivity
<-30dBm
DOM Support
Yes
Operating Temperature Range
-40 to 85°C
Protocols
SFF-8472 MSA Compliant, IEEE 802.3ah-2004
Key Features of LINK-PP LS-SM311G-40AI 1.25G SFP
This versatile SFP transceiver features hot-pluggable functionality for seamless maintenance without system downtime. It includes an integrated MCU control unit supporting real-time digital diagnostic monitoring through a standard 2-wire serial interface. Furthermore, the module utilizes internal calibration constants to ensure highly accurate, automated reporting of critical operating conditions.
LINK-PP LS-SM311G-40AI 1.25G SFP Optical Module
Engineered for ultimate dependability, this optical transceiver provides an efficient, cost-effective solution for multi-rate fiber optic infrastructures. It operates on a single +3.3V power supply while delivering low power consumption within standard system limits.
LS-SM311G-40AI: 1G Connectivity for Industrial PLC Communication
With an industrial-grade operating case temperature range from -40°C to +85°C, this module ensures flawless stability in harsh environments. It provides rugged, failure-free 1G data connectivity essential for industrial PLC automation networks.
LS-SM311G-40AI Module with 1310nm Wavelength
Utilizing a highly efficient 1310nm DFB laser transmitter, this transceiver ensures minimal spectral width and superior side-mode suppression. The optimized 1310nm wavelength guarantees exceptional signal integrity throughout single-mode fiber links.
Designed for long-reach networking, this powerful SFP module comfortably achieves a maximum transmission distance of up to 40km. It provides the ideal hardware solution for connecting distant corporate facilities or remote distribution nodes.
LS-SM311G-40AI Module with Duplex LC Interface
Equipped with a standard duplex LC receptacle, this transceiver guarantees a secure, reliable optical connection with minimum insertion loss. The dual-fiber LC design simplifies deployment and aligns with standard enterprise cabling setups.
LS-SM311G-40AI Module with DOM for Real-Time Monitoring
Featuring real-time digital diagnostic monitoring, the module continuously monitors its internal temperature, supply voltage, and bias current. Network engineers can access live receiver and transmitter power levels to prevent unexpected link downtime.
LINK-PP LS-SM311G-40AI 1.25G SFP Certification
Adhering to strict international regulatory frameworks, this hardware component meets rigorous global standards. The device features full compliance with statutory engineering mandates, ensuring a safe deployment in high-density enterprise networks.
Every component undergoes a systematic hardware evaluation process to guarantee out-of-the-box reliability. Technicians verify automated assembly tolerances, signal consistency, and structural integrity to maintain elite manufacturing standards.
LS-SM311G-40AI Quality Certifications
This optical module complies fully with the SFP Multi-Source Agreement and SFF-8472 industry specifications. Additionally, the product carries verified CE, FCC, and RoHS certifications for global market acceptance.
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-SM311G-40AI Certified for Reliable Host-Device Compatibility
Engineered according to uniform physical and electrical MSA benchmarks, the module ensures plug-and-play interoperability with diverse hardware platforms. It connects securely with mainstream switches, routers, and industrial network appliances.
Rigorous Testing Ensures Reliable SFP Performance
Each unit passes comprehensive automated test benches to validate performance parameters. This exhaustive operational screening ensures long-term transmission stability under heavy data traffic.
Optical Spectrum Test
Engineers perform spectrum analysis to confirm the 1310nm center wavelength remains within precise nanometer tolerances.
Eye Pattern Test
High-speed oscilloscope analysis evaluates the optical eye pattern to confirm clean signal transitions and zero jitter.
Bit Error Rate Test
The transceiver undergoes PRBS 2^7-1 pattern testing at full data rate to guarantee an optimal BER.
Temperature Test
Thermal chamber cycling verifies that the industrial-grade component maintains stable throughput across extreme environmental temperature swings.
Product Shipping for LINK-PP LS-SM311G-40AI 1.25G SFP
We utilize premium multi-layered protective materials to guarantee your hardware arrives in pristine working condition. Orders are handled with maximum logistical efficiency.
Anti-Static Protective Packaging
Each transceiver is sealed inside an individual ESD anti-static pouch.
Shock-Resistant Transport Protection
Custom-fitted foam enclosures protect the fragile optical components during transit.
Fast Order Processing and Dispatch
Our logistics team expedites order fulfillment for immediate warehouse dispatch.
Global Logistics and International Delivery
We partner with top-tier international couriers to provide tracked worldwide shipping.
This hands-on technical demonstration showcases the effortless hot-swapping capability of the module within an active Gigabit Ethernet switch. Watch how the host system instantly recognizes the transceiver, establishes a 40km link, and initializes DOM telemetry data.
LS-SM311G-40AI 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-SM311G-40AI 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:
Absolutely! This 1.25G SFP module is strictly SFF-8472 MSA compliant, ensuring 100% plug-and-play compatibility with Cisco, Juniper, Ubiquiti, and other major OEM network equipment. By
admin on
2025-08-21
A:
Definitely. This is an industrial-grade optical module designed with a rugged operating temperature range from -40°C to +85°C, making it perfect for unheated outdoor cabinets, harsh environments, and cell tower deployments. By
admin on
2025-07-29
A:
Yes, it fully supports integrated DDM/DOM via an I2C interface for real-time monitoring of temperature, voltage, and laser bias. It is also compliant with the IEEE 802.3ah-2004 protocol, ensuring highly robust performance for industrial communication setups. By
admin on
2025-07-18
A:
This specific module is designed exclusively for Single-Mode Fiber (SMF) using a standard Duplex LC connector interface. It utilizes a highly efficient 1310nm DFB laser to reliably push data up to a 40km transmission distance. By
admin on
2025-05-08
We bought a batch of these industrial grade sfp modules for our campus fiber network. Excellent 1310nm DFB laser performance! SFF-8472 DOM reporting is super accurate on our Cisco gear. (^_^)v
Please write comments with more than three
character.
491454
277635
L***s
Czech Republic
Verified
Purchase
5 .0
2025-07-16
Deployed these 1.25G 40km SMF modules for an outdoor cell tower backhaul. The -40 to 85°C industrial rating is legit. Passed our multi-brand switch compatibility test with zero DDM drops.
Please write comments with more than three
character.
491454
243247
M***s
Colombia
Verified
Purchase
5 .0
2025-04-20
Needed a rugged 1.25Gbps SFP 1310nm 40km duplex LC module for an unheated outdoor cabinet. Survived freezing nights perfectly! The DOM support helps my IT team monitor temps remotely. ❄️
Please write comments with more than three
character.
491454
277648
J***n
Canada
Verified
Purchase
5 .0
2025-02-10
Can't say enough about the quality of Link-pp's customer service and quality products. Shop with confidence. They stand behind their stuff and are always quick, courtious and knowledgable!
Please write comments with more than three
character.
491454
277631
S***o
Hong Kong
Verified
Purchase
5 .0
2024-09-04
This is one of the best places to shop online. Not only is the selection & pricing incredible, the ease of use of the store is absolutely fantastic!! The whole process went very smoothly.
Please write comments with more than three
character.
491454
243232
F***a
Taiwan, Province of China
Verified
Purchase
5 .0
2022-09-13
Based on this, my first purchase from Link-pp, I will definitely continue shopping through Link-pp. The products are top of the line, and the price is almost unbeatable by any other providers.
United Kingdom · English · GBP
