The LINK-PP LS-BL31491G-40C is a high-performance 1G SFP BiDi transceiver designed for reliable Gigabit Ethernet connections. Operating over a single single-mode fiber, this commercial-grade module integrates advanced optical sub-assemblies to deliver robust data transmission up to 40km. It complies fully with industry standards, ensuring seamless network performance across diverse hardware configurations.
LINK-PP Part Number
LS-BL31491G-40C
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
1.25Gbps
Wavelength
1310nm-TX/1490nm-RX
Max Cable Distance
40km
Connector
Simplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
-5 to 0dBm
RX Power
-23 to -1dBm
Receiver Sensitivity
<-24dBm
DOM Support
Yes
Operating Temperature Range
0 to 70°C
Protocols
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant
Key Features of LINK-PP LS-BL31491G-40C 1G SFP
This module delivers incredible efficiency by utilizing a high-performance DFB laser and an ultra-sensitive PIN receiver. With integrated Digital Optical Monitoring and an industry-standard interface, it provides exceptional reliability and comprehensive multi-vendor compatibility for modern infrastructure deployment.
LINK-PP LS-BL31491G-40C 1G SFP Optical Module
This specific SFP optical module is engineered for high-density networking applications, offering low power consumption, minimal heat dissipation, and continuous high-speed connectivity within standard 1G industrial and commercial switching systems.
LS-BL31491G-40C: 1G Connectivity for Campus Networks
Perfect for expanding regional campus networks, this 1G transceiver provides robust bandwidth for connecting separate institutional buildings, linking remote servers, and enabling highly efficient local data backhaul without infrastructure bottlenecks.
LS-BL31491G-40C Module with 1310nm-TX and 1490nm-RX Wavelength
Featuring bi-directional optical filtering technology, the transceiver transmits data efficiently at 1310nm and receives at 1490nm, successfully maximizing total fiber resource utilization through single-strand fiber technology.
Equipped with a powerful distributed feedback laser, this module easily overcomes signal attenuation to deliver stable, long-distance gigabit data transmission up to a maximum range of forty kilometers.
LS-BL31491G-40C Module with Simplex LC Interface
The standardized simplex LC connector ensures clean, low-insertion-loss optical connectivity, significantly simplifying fiber patch cord deployment and reducing structural cable management complexity in tight rack spaces.
LS-BL31491G-40C Module with DOM for Real-Time Monitoring
The built-in DOM functionality enables operators to track essential parameters including internal temperature, voltage, laser bias current, and critical optical power levels directly through system software.
LINK-PP LS-BL31491G-40C 1G SFP Certification
LINK-PP ensures that every single transceiver complies with global regulatory and strict environmental standards, guaranteeing sustainable, long-term deployment across diverse international network architectures.
Our rigorous quality testing program guarantees optimal signal integrity, extreme environmental durability, and stable mechanical performance under continuous maximum capacity operations.
LS-BL31491G-40C Quality Certifications
This optical product holds premium regulatory certifications, including CE, FCC, and RoHS compliance, reflecting our absolute commitment to manufacturing eco-friendly hardware.
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-BL31491G-40C Certified for Reliable Host-Device Compatibility
Extensively verified across major industry platforms, this module guarantees seamless plug-and-play operation and eliminates integration issues with various enterprise switches.
Rigorous Testing Ensures Reliable SFP Performance
Every manufactured transceiver undergoes comprehensive laboratory validation to ensure peak hardware performance and zero transmission errors in active enterprise networks.
Optical Spectrum Test
Advanced spectral analysis ensures the DFB laser maintains central wavelength stability and suppressive side modes.
Eye Pattern Test
Precision eye diagram testing validates outstanding optical wave shapes and clean, distortion-free signal margins.
Bit Error Rate Test
Extended bit error testing guarantees flawless, packet-loss-free data performance at maximum throughput limits.
Temperature Test
Thermal chamber cycling verifies flawless electrical operations throughout the commercial zero to seventy degrees range.
Product Shipping for LINK-PP LS-BL31491G-40C 1G SFP
We utilize optimized packaging and reliable distribution channels to guarantee your hardware arrives safely, quickly, and completely ready for immediate deployment.
Anti-Static Protective Packaging
Each transceiver is sealed in premium ESD packaging to prevent electrical damage.
Shock-Resistant Transport Protection
Cushioned customized enclosures protect fragile optical components during transit.
Fast Order Processing and Dispatch
Our streamlined warehouse logistics guarantee rapid processing and prompt international shipping.
Global Logistics and International Delivery
Trusted global carriers ensure secure, tracked transport directly to your designated facility.
This practical demonstration illustrates the effortless installation process of inserting the module into a live enterprise switch, establishing immediate link synchronization, and accessing the real-time diagnostics via the network management interface.
LS-BL31491G-40C 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-BL31491G-40C 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:
Yes, it's fully MSA compliant and highly interoperable across multi-brand switches. For absolute certainty, you can select your specific OEM brand (like Cisco, Juniper, HPE, etc.) before purchasing, and we will flash the EEPROM to ensure flawless plug-and-play compatibility. By
admin on
2026-03-06
A:
Yes, the module strictly adheres to IEEE 802.3z standards for Fast and Gigabit Ethernet, and is fully compliant with 1G Fibre Channel protocols. This guarantees industry standard compliance and safe integration into strict enterprise network environments. By
admin on
2025-09-14
A:
Yes, the LS-BL31491G-40C is our commercial-grade indoor version. If you are deploying in harsh outdoor environments, we offer the corresponding industrial-grade model (LS-BL31491G-40I), which is engineered to operate safely in extreme temperatures ranging from -40°C to 85°C. By
admin on
2025-06-21
A:
We maintain stable inventory levels to ensure supply chain reliability. An order of 500+ units is typically processed within 3 days. With standard express delivery, they will arrive at your US facility in approximately 3 to 5 business days. By
admin on
2025-03-24
A:
This specific module features a Simplex LC optical interface to support high-density switch ports. You must use a Simplex LC-to-LC single-mode fiber patch cord. If you are connecting to older legacy equipment with SC ports, you will need a specialized LC-to-SC adapter cable. By
admin on
2025-03-14
We bulk deployed these LS-BL31491G-40C modules for a gigabit base station backhaul project. The MSA compliant Simplex LC DOM SMF transceiver dropped our CAPEX significantly while maintaining stable 1.25Gbps throughput.
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476191
323856
C***z
Colombia
Verified
Purchase
5 .0
2025-07-22
Sourced these for a critical data center link. The 40km single-mode SFP handled Gigabit Fibre Channel flawlessly during stress tests. Commercial 0-70°C temp rating is perfect for our climate-controlled rack enclosures. ( ˘▽˘)っ
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476191
323866
E***z
Kazakhstan
Verified
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5 .0
2025-01-14
Impressive receiver sensitivity at <-24dBm on this 1310nm/1490nm gigabit SFP! Upgraded our corporate WAN links using single-strand fiber. DDM metrics read perfectly on our Netgear core switches. Will definitely reorder.
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476191
323874
B***z
Ukraine
Verified
Purchase
5 .0
2024-10-31
Tested this 1G SFP BiDi transceiver over a 35km campus fiber network. The DFB laser maintains strong TX power around -2dBm. Excellent interoperability with our mixed Cisco and Extreme networks.
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476191
199671
S***r
Austria
Verified
Purchase
5 .0
2023-12-11
LINK-PP has everything that I need in stock, with the best prices and the Fastest shipping. Shopping here is always a fantastic experience for me. I love LINK-PP and will continue to use it as my provider for all of my fiber optics needs!
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476191
199673
S***p
Brunei Darussalam
Verified
Purchase
5 .0
2023-11-15
The website is very easy to use, and I appreciate that since a lot of items I order for my technicians I am not aware of. Your website shows exactly what I need and ordering is easy. Really satisfied with the shopping experience.
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