This industrial-grade 2.5G SFP optical transceiver is engineered for high-speed single-mode fiber communications. Featuring a 1310nm DFB laser transmitter and PIN photodetector, it delivers reliable 2.5Gbps data rates up to 40km reach over duplex LC connections. Operating reliably from -40°C to +85°C with a 3.3V power supply, the unit features integrated Digital Diagnostic Monitoring.
LINK-PP Part Number
LS-SM312G-40I
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
2.5Gbps
Wavelength
1310nm
Max Cable Distance
40km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
Receiver Sensitivity
-20dBm
DDM/DOM
Supported
TX Power
-2 to +3dBm
RX Power
-20 to -1dBm
Operating Temperature Range
-40 to 85°C
Protocols
MSA Compliant
Key Features of LINK-PP LS-SM312G-40I 2.5G SFP
Designed with a hot-pluggable SFP footprint, this transceiver incorporates a 1310nm DFB laser, PIN receiver, duplex LC receptacle, and SFP MSA compliance. Supporting wide industrial operating temperatures from -40°C to +85°C and low power consumption, it ensures exceptional operational flexibility across diverse networking environments.
LINK-PP LS-SM312G-40I 2.5G SFP Optical Module
This 2.5G SFP optical module provides robust performance for high-throughput networks. Engineered for cost-effective efficiency, the single-mode transceiver ensures stable data transmission, minimal insertion loss, and high signal integrity across enterprise networks.
LS-SM312G-40I: 2.5G Connectivity for Long-haul Telecom
Offering reliable 2.5G connectivity for long-haul telecom architectures, this hot-swappable transceiver supports high-capacity backbone links. It delivers dependable optical links for telecom service providers, Fiber Channel applications, and wide-area industrial communications.
LS-SM312G-40I Module with 1310nm Wavelength
Utilizing a high-performance 1310nm DFB laser transmitter, this optical module operates efficiently within the 1260nm-1360nm spectrum. This 1310nm wavelength configuration guarantees excellent dispersion tolerance and low attenuation for high-speed fiber optics.
LS-SM312G-40I Module Supporting 40km Transmission
Designed for long-reach networking, this SFP module supports seamless 40km transmission over single-mode fiber (SMF). This extended optical link capability eliminates intermediate repeater requirements, lowering deployment costs for long-distance topology.
LS-SM312G-40I Module with Duplex LC Interface
Equipped with an industry-standard duplex LC receptacle, the optical transceiver enables high-density fiber connections. The LC interface provides secure mechanical latching, precise optical alignment, and straightforward compatibility with standard LC fiber patch cables.
LS-SM312G-40I Module with DOM for Real-Time Monitoring
Integrated Digital Optical Monitoring (DOM) according to SFF-8472 allows real-time tracking of critical operating parameters on the module. Network administrators can easily monitor operating temperature, supply voltage, laser bias, and optical power.
LINK-PP LS-SM312G-40I 2.5G SFP Certification
This 2.5G SFP module adheres to strict international regulatory standards, holding CE, FCC, UKCA, UL, RoHS, and REACH certifications to ensure safety, environmental compliance, and reliability.
Our comprehensive quality testing program subjects every single optical transceiver module to multi-stage inspections, evaluating electrical circuitry, transmitter stability, and receiver sensitivity for flawless field deployment.
LS-SM312G-40I Quality Certifications
Built in ISO-certified manufacturing facilities, this transceiver satisfies Class 1 laser safety requirements along with RoHS environmental standards, guaranteeing consistent product quality and long-term durability.
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-SM312G-40I Certified for Reliable Host-Device Compatibility
Fully compliant with SFP Multi-Source Agreement (MSA) specifications, the optical module is certified for seamless compatibility across a wide range of switches, routers, and media converters.
Rigorous Testing Ensures Reliable SFP Performance
To guarantee network uptime, every optical transceiver undergoes rigorous factory testing, validating optical, electrical, and thermal reliability under extreme operating conditions.
Optical Spectrum Test
Spectrum testing verifies central wavelength accuracy at 1310nm and SMSR above 30dB for pure output.
Eye Pattern Test
Eye pattern analysis ensures clean signal waveforms, optimal extinction ratio, and low jitter distortion.
Bit Error Rate Test
BER testing verifies reliable data transmission at 2.5Gbps with error rates below 1×10⁻¹².
Temperature Test
Thermal chamber testing validates stable module operation across the full -40°C to +85°C industrial range.
Product Shipping for LINK-PP LS-SM312G-40I 2.5G SFP
We provide secure, professional packaging and fast global dispatch for this 2.5G SFP transceiver, ensuring safe transit to your facilities.
Anti-Static Protective Packaging
Each transceiver module is sealed inside anti-static ESD shielding bags.
Shock-Resistant Transport Protection
Cushioned protective boxes safeguard optical components from drops and vibration.
Fast Order Processing and Dispatch
Efficient inventory management ensures prompt order fulfillment and immediate dispatch.
Global Logistics and International Delivery
Trusted express courier partners deliver your order quickly to worldwide destinations.
Utilizing this 2.5G SFP transceiver is seamless: insert the hot-pluggable module into an open SFP slot, connect duplex LC single-mode fiber patch cables, and establish instant, high-speed optical connectivity across your network switch or router.
LS-SM312G-40I 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-SM312G-40I 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:
This module requires standard Single-Mode Fiber (SMF, 9/125µm OS1/OS2) terminated with Duplex LC connectors. Its 1310nm optical channel provides optimal dispersion tolerance and low attenuation to sustain the full 40km link span without requiring intermediate repeaters. By
admin on
2026-05-04
A:
Yes, we provide tiered B2B pricing for volume orders directly on our platform. Unit costs decrease significantly for quantities of 100, 1,000, 3,000, and 6,000+ pieces. For large-scale project tenders or ongoing framework supply contracts, please contact our enterprise sales team for customized project quotes and additional coupon support. By
admin on
2026-04-11
A:
The LS-SM312G-40I meets comprehensive global standards and holds CE, FCC, UKCA, UL, RoHS, and REACH certifications. It complies with Class 1 laser eye safety standards and is manufactured in facilities certified under ISO9001, ISO14001, and ISO/IEC 27001, meeting strict government, enterprise, and telecom regulatory compliance. By
admin on
2026-04-05
A:
Yes. The LS-SM312G-40I optical module complies strictly with the standard SFP Multi-Source Agreement (MSA). It features universal EEPROM coding designed for broad multi-vendor interoperability, ensuring hassle-free recognition and full wire-speed 2.5Gbps operation across Cisco, MikroTik, Ubiquiti UniFi/EdgeSwitch, Huawei, and other major open-networking platforms. By
admin on
2026-03-19
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478280
459651
S***n
United States
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5 .0
2026-05-29
Installed in outdoor NEMA enclosures along a railway fiber corridor. Tested from -30°C winter nights to hot afternoons. The 1310nm wavelength stayed rock steady with constant 2.5Gbps wire-speed throughput.
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478280
459648
E***t
United Kingdom
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5 .0
2026-05-15
Upgraded our municipal surveillance backhaul with these 40km industrial SFPs. Plug-and-play MSA compatibility eliminated switch lock-in, cutting our optical transceivers procurement budget by nearly 70% while keeping high MTBF.
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478280
459655
M***a
United States
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5 .0
2025-11-02
Benchmarked on Cisco CBS350 and MikroTik CCR2004 over 38km OS2 spool. TX was +1.2dBm with -16.4dBm RX sensitivity. DDM metrics matched our optical power meter perfectly with zero CRC errors.
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478280
459654
M***r
Switzerland
Verified
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5 .0
2025-09-18
Real-time DOM monitoring via SNMP shows flawless laser bias current and stable 3.3V rails across our 32km inter-building trunk. Outstanding thermal dissipation and tight LC ferrule tolerances on every module.
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478280
205617
B***o
Indonesia
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5 .0
2024-07-18
I really like your news room, and can get mnay surprising news. Such as holiday sale of hotselling products,free shipping notice and so on. Of coursse, I like your products as well, all of them are with high quality and resonable price, looking forward to more cooperation with Link-pp.
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478280
205612
B***m
New Zealand
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5 .0
2024-07-13
They offer accurate product solutions for my network demands. I get all I want here. Really convenient. Besides, their packages are beyond my expectations. I am pleased to see the firm and fancy packing when opening the box. By the way, the delivery is really Fast.
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478280
205613
E***a
United States
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5 .0
2024-05-04
On a summit, my partner introduced l-p.com and thought highly of their good products and service. Then I wanted to have a try. I have to say both the customer support and account manager are very professional.
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