The LINK-PP LS-BL31552G-40I 2.5G SFP BiDi module enables bidirectional 2.5Gbps transmission over a single-mode fiber link for up to 40km, which lowers infrastructure costs. It delivers reliable optical performance through a 1310nm transmit and 1550nm receive wavelength pair, supporting stable, efficient long-distance connectivity.
LINK-PP Part Number
LS-BL31552G-40I
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
2.5Gbps
Wavelength
1310nm-TX/1550nm-RX
Max Cable Distance
40km
Connector
Simplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
TX Power
-2 to +4dBm
RX Power
-23 to -1dBm
Receiver Sensitivity
<-20dBm
Receiver Overload
-1dBm
Operating Temperature Range
-40 to 85°C
Protocols
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant
Key Features of LINK-PP LS-BL31552G-40I 2.5G SFP BiDi
The LINK-PP LS-BL31552G-40I module is made for long-range, economical industrial networking. It supports 2.5Gbps full-duplex transmission over a single fiber up to 40km. Its hot-pluggable SFP design allows for rapid installation, and the built-in DOM compatibility provides visibility into running status for simplified network management.
LINK-PP LS-BL31552G-40I 2.5G SFP Optical Module
This LINK-PP LS-BL31552G-40I 2.5G BiDi optical module incorporates a DFB laser transmitter and a PIN/TIA receiver for reliable bidirectional communication. The matched wavelength pair ensures stable transmission with strong EMI resistance and low bit error performance over long distances.
LS-BL31552G-40I: Reliable 2.5 Gbps Connectivity for Efficient Fiber Networks
The LINK-PP LS-BL31552G-40I BiDi SFP module delivers dependable 2.5Gbps connectivity for access, enterprise, and industrial network environments. It is ideal for applications requiring stable bandwidth, reduced cabling, and long-distance transmission on a single optical strand.
LS-BL31552G-40I Module with 1310nm-TX/1550nm-RX Wavelength
Operating at a 1310nm transmit and 1550nm receive wavelength, the LINK-PP LS-BL31552G-40I module offers reliable, low-interference transmission over single-mode fiber. This wavelength pairing enables clean signal delivery, efficient optical performance, and reliable long-distance communication.
With a robust 40km reach over single-mode fiber, the LINK-PP LS-BL31552G-40I BiDi SFP module delivers reliable performance across metro, industrial, and distributed network deployments.
LS-BL31552G-40I Module with Simplex LC Interface
The simplex LC port enables transmit and receive traffic to share a single fiber connection, saving fiber consumption and making cabling design easier. This approach lowers deployment complexity and can help reduce installation and maintenance costs.
LS-BL31552G-40I Module with DOM for Real-Time Monitoring
Advanced DOM support optimizes network dependability by providing immediate access to critical operating data, including temperature, voltage, transmit power, and receive power.
Built under ISO 9001 quality management processes and supported by compliance-related certifications such as CE, RoHS, and FCC, the LINK-PP module is designed for dependable operation and broad deployment readiness.
Every module is thoroughly tested under various deployment conditions to ensure dependable, consistent performance in real-world settings.
LS-BL31552G-40I Quality Certifications
LINK-PP modules are developed and certified to deliver high stability, reliability, and compliance with international standards.
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-BL31552G-40I Certified for Reliable Host-Device Compatibility
Extensive compatibility testing confirms smooth operation and dependable performance with supported LINK-PP platforms.
Rigorous Testing Ensures Reliable SFP Performance
Every LINK-PP module undergoes a complete validation process to deliver optimal performance. Find out more at the LINK-PP Test Support Center.
Optical Spectrum Test
Wavelength verification testing guarantees compliance with optical performance standards and stable communication.
Eye Pattern Test
Eye pattern analysis ensures signal stability and supports accurate data transfer.
Bit Error Rate Test
Bit error testing helps guarantee consistent data accuracy and stable optical communication.
Temperature Test
Temperature stability checks verify reliable module operation even in demanding applications.
Product Shipping for LINK-PP LS-BL31552G-40I 2.5G SFP BiDi
LINK-PP modules are shipped securely and efficiently via established global logistics channels. The packaging and handling process is designed to protect the products during transit and ensure timely delivery.
Anti-Static Protective Packaging
Electrostatic-safe packaging solutions help maintain the integrity of internal components.
Shock-Resistant Transport Protection
Heavy-duty packaging materials provide reliable defense against shipping stress.
Fast Order Processing and Dispatch
Immediate order processing improves shipping efficiency and response times.
Global Logistics and International Delivery
International logistics systems enable fast and dependable global transport.
The LINK-PP LS-BL31552G-40I 2.5G SFP BiDi works with SDH STM-16 systems, SONET OC-48 applications, 2x Fibre Channel links, enterprise routers, server interfaces, and other single-fiber long-reach optical links.
LS-BL31552G-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-BL31552G-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:
Yes, it is fully backward-compatible with standard commercial SFP/SFP+ slots that support 2.5Gbps data rates; the industrial rating simply ensures the optic itself will not degrade or fail when subjected to extreme environmental conditions outside climate-controlled server rooms. By
admin on
2025-08-23
A:
Because the transmitter output is engineered to penetrate up to 40km of single-mode fiber, direct back-to-back testing on a short patch cable without an inline optical attenuator (10dB to 15dB recommended) risks saturating or permanently damaging the sensitive PIN photodiode receiver. By
admin on
2025-03-30
A:
The module features temperature-compensated circuitry compliant with SFF-8472, ensuring that digital diagnostic monitoring (DDM) readouts for optical transmit/receive power, bias current, and internal operating temperature remain accurate throughout the entire -40°C to +85°C range. By
admin on
2024-07-07
A:
No external optical filters are needed; the internal optical diplexer inside the SFP module automatically separates the 1310nm transmit wavelength from the incoming 1550nm receive wavelength over the single LC fiber interface. By
admin on
2024-03-24
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485596
438779
F***s
United States
Verified
Purchase
5 .0
2026-05-31
Replaced standard commercial optics with these industrial-grade LINK-PP transceivers for rail monitoring systems. The ruggedized housing and sturdy duplex-to-simplex LC mechanical latch hold firm despite heavy track vibrations nearby.
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485596
438769
E***n
Hungary
Verified
Purchase
5 .0
2026-05-15
Link up a remote security gate house to our main industrial facility over 28km SMF. Upgraded throughput from 1G to 2.5G instantly while sharing a single fiber core with existing telemetry equipment. =D
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character.
485596
438783
R***z
Belgium
Verified
Purchase
5 .0
2026-05-14
Upgraded wireless backhaul antennas in a mountain pass. The 1310nm transmitter punch easily reaches our target 35km distance while drawing minimal power from our solar battery setup. ;)
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485596
438787
Z***n
Austria
Verified
Purchase
5 .0
2026-05-10
Excellent choice for extending single-strand fiber backhaul in unheated remote cabinets. The -40°C to 85°C industrial operating temperature range handles extreme seasonal drops without optical frequency drift. =D
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485596
438768
H***s
Netherlands
Verified
Purchase
5 .0
2026-04-24
Installed this industrial 2.5G BiDi module in a harsh desert weather station enclosure. Even when temperatures spiked above 70°C inside the steel box, the 1310nm-TX signal output remained steady with zero thermal throttling. :)
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485596
438767
C***e
Spain
Verified
Purchase
5 .0
2026-04-09
Slotted right into a ruggedized Siemens industrial switch. Locked in at 2.5Gbps full duplex over a simplex LC SMF connection instantly without requiring command-line override hacks. ;)
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485596
438772
B***l
Ireland
Verified
Purchase
5 .0
2026-03-03
Verified compatible across multi-vendor switch stacks including Mikrotik, Netgear, and Ubiquiti outdoor switches. Zero frame drops recorded during winter storm tests. =)
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485596
438773
N***a
Bangladesh
Verified
Purchase
5 .0
2025-11-28
Tested in extreme heat environments alongside Moxa and Cisco industrial Ethernet hardware. Hot-pluggable design let us swap out aging 1G units on a live network ring without dropping adjacent node traffic. =)
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485596
438775
H***n
United Kingdom
Verified
Purchase
5 .0
2025-09-04
Best cost-effective solution for industrial 2.5G BiDi deployment on single-strand fiber networks. Plugs into generic SFP ports and reports clean DDM metrics every time. :-D
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485596
438789
V***s
Spain
Verified
Purchase
5 .0
2025-06-27
Upgraded our traffic management camera network over a 33km single-mode fiber run. Using this industrial 2.5G SFP BiDi transceiver allowed us to double bandwidth per pole without running new glass. The DFB laser and PIN receiver combination handles link loss across dirty patch panels seamlessly!
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485596
226008
E***s
South Africa
Verified
Purchase
5 .0
2024-11-03
Deployed a dozen units for a rural WISP tower feed expansion. Operating a single-strand 1310nm-TX/1550nm-RX link cut our dark fiber leasing costs in half. Integrated SFF-8472 digital diagnostic monitoring made remote link budget auditing via SNMP super painless. :-D
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485596
226007
S***s
Mexico
Verified
Purchase
4 .0
2024-10-03
The module performance in freezing conditions is rock solid, but UPS delayed delivery by two days due to weather. Luckily the inner anti-static tray kept the simplex LC port dust cap intact.
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485596
226004
L***r
Austria
Verified
Purchase
5 .0
2024-05-25
The website was easy to order, the delivery service was Fast and arrived before time. Customer service was friendly and helpful. Would recommend this site to my friends. I also found that they provide solutions, which is very useful for me. Highly recommend
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485596
225996
A***z
Poland
Verified
Purchase
5 .0
2024-05-21
Fully SFP MSA compliant with outstanding EMI resistance. Ran 72-hour continuous packet flood tests near high-voltage industrial motors and recorded zero bit error rate spikes. :)
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