The LINK-PP LS-BL49312G-20I 2.5G SFP BiDi transceiver delivers high-performance data transmission at speeds of up to 2.5 Gbps over single-mode fiber for distances of up to 20 km. With operating wavelengths of 1490 nm (TX) and 1310 nm (RX), this industrial-grade module ensures robust, interference-resistant connectivity, making it ideal for mission-critical and harsh environment deployments.
LINK-PP Part Number
LS-BL49312G-20I
Vendor Name
LINK-PP
Form Factor
SFP
Max Data Rate
2.5Gbps
Wavelength
1490nm-TX/1310nm-RX
Max Cable Distance
20km
Connector
Simplex LC
Media
SMF
Transmitter Type
DFB BiDi
Receiver Type
PIN+TIA
TX Power
-5 to 0dBm
RX Power
-23 to -1dBm
Receiver Sensitivity
<-18dBm
Receiver Overload
-1dBm
Operating Temperature Range
-40 to 85°C
Protocols
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant
Key Features of LINK-PP LS-BL49312G-20I 2.5G SFP BiDi
The LINK-PP LS-BL49312G-20I is designed for dependable 2.5 Gbps throughput and plug-and-play simplicity, streamlining network deployment and upgrades. Its key characteristics include a high-stability DFB laser, a high-sensitivity PIN/TIA receiver, a simplex LC interface, and an integrated DOM. Its advanced BiDi technology provides full-duplex communication over a single fiber strand, maximizing fiber consumption while lowering cabling costs and system complexity.
The LINK-PP LS-BL49312G-20I BiDi SFP module uses complementary transmit and receive wavelengths for full-duplex transmission over a single fiber, improving scalability, optimizing fiber use, and lowering the cost of bandwidth expansion without new fiber deployment.
LS-BL49312G-20I: Reliable 2.5 Gbps Connectivity for Efficient Fiber Networks
The LINK-PP LS-BL49312G-20I module is purpose-built for stable, long-term operation, delivering consistent data transfer rates up to 2.5 Gbps. With low latency and signal degradation, as well as dependable link integrity, it is ideal for enterprise access networks, industrial Ethernet, and telecom edge applications.
LS-BL49312G-20I Module with 1490nm-TX/1310nm-RX Wavelength
With a transmitting wavelength of 1490nm and a receiving wavelength of 1310nm, this LINK-PP LS-BL49312G-20I module provides optimized wavelength separation for reliable BiDi transmission. Its design reduces crosstalk and enhances signal clarity, ensuring stable full-duplex communication over a single fiber link.
This LINK-PP LS-BL49312G-20I 2.5G BiDi module, with transmission distances of up to 20 km over single-mode fiber, is perfect for long-distance connectivity scenarios like campus networks, metro access, and remote industrial sites, guaranteeing continuous performance throughout extended links.
LS-BL49312G-20I Module with Simplex LC Interface
The simplex LC port combines outgoing and incoming signals in a single connection; it requires less fiber, makes cable management more straightforward, and reduces the total cost of installation.
LS-BL49312G-20I Module with DOM for Real-Time Monitoring
Live monitoring of voltage, temperature, and optical performance via DOM improves fault prevention and speeds up issue resolution.
The LINK-PP module is backed by ISO 9001 quality management and is certified with CE, RoHS, and FCC approvals, ensuring dependable performance and worldwide compliance.
Strict quality verification is performed on every unit to maintain dependable performance in different application scenarios.
LS-BL49312G-20I Quality Certifications
LINK-PP optical modules adhere to quality assurance and manufacturing standards throughout the entire production process.
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-BL49312G-20I Certified for Reliable Host-Device Compatibility
The module is verified for seamless deployment in LINK-PP equipment, ensuring stable connectivity and quick setup.
Rigorous Testing Ensures Reliable SFP Performance
LINK-PP implements a comprehensive verification protocol to ensure optimal functionality. For more information, please refer to the LINK-PP Test Support Center.
Optical Spectrum Test
Verifies accurate wavelength output for standards-compliant transmission.
Eye Pattern Test
Analyzes eye diagrams precisely to confirm signal clarity and stability.
Bit Error Rate Test
Checks transmission accuracy to ensure low error rates and good signal quality.
Temperature Test
Validates performance in severe temperatures to ensure reliability.
Product Shipping for LINK-PP LS-BL49312G-20I 2.5G SFP BiDi
LINK-PP guarantees swift and reliable delivery with globally optimized logistics and protective packaging.
Anti-Static Protective Packaging
Static-shielding packaging provides dependable protection for precision electronic parts.
Shock-Resistant Transport Protection
Shock-absorbing packaging keeps products protected during long-distance transport.
Fast Order Processing and Dispatch
Speedy dispatch management ensures products are shipped without unnecessary delays.
Global Logistics and International Delivery
Global delivery services help maintain efficient shipping to international destinations.
This LINK-PP LS-BL49312G-20I 2.5G SFP BiDi module is ideal for deployment in enterprise networks, telecom access systems, industrial Ethernet environments, and fiber-constrained infrastructures where optimizing fiber efficiency is essential.
LS-BL49312G-20I 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-BL49312G-20I 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:
By default, these modules come with multi-brand compatibility coding that works smoothly with most major network switches like Cisco, Huawei, HP, MikroTik, and Ubiquiti. However, if you have strict brand-locked switches, you can specify your switch model in the order notes, and our technical team will pre-code the EEPROM for you at no extra cost! By
admin on
2026-06-03
A:
Absolutely. This is an industrial-grade transceiver designed specifically for harsh environments. It features a wide operating temperature range (typically supporting -40°C to +85°C) and robust internal thermal management, making it ideal for outdoor enclosures, cell towers, and remote utility boxes. ☀️❄️ By
admin on
2025-08-25
A:
This is a BiDi (Bidirectional) transceiver utilizing WDM technology. It transmits on 1490nm and receives on 1310nm (paired with a 1310nm-TX/1490nm-RX module on the other end), allowing you to run full-duplex communication over just a single strand of Simplex LC Single Mode Fiber (SMF), cutting your fiber cabling cost in half! By
admin on
2025-06-11
Plugged into our Cisco Catalyst switch and it linked up instantly. Solid 2.5G throughput over single mode fiber across our campus building link. DDM monitoring gives accurate optical power readings (-3.2 dBm TX). Highly recommend for enterprise upgrades.
Please write comments with more than three
character.
488462
365003
N***n
Lithuania
Verified
Purchase
5 .0
2026-04-12
We use these for telecom cell tower fiber backhaul extension. Link stability is exceptional over the 20km single mode fiber run. DDM real-time monitoring allows our NOC team to track optical health proactively. Highly professional grade module.
Please write comments with more than three
character.
488462
364993
O***s
Ireland
Verified
Purchase
5 .0
2026-01-15
We bought a batch of 20 units for our smart city traffic monitoring backhaul. Every single LS-BL49312G-20I transceiver negotiated the 2.5G link cleanly over single mode fiber. Great OEM compatibility, zero coding errors on our managed switches. Will re-order.
Please write comments with more than three
character.
488462
364986
A***n
Philippines
Verified
Purchase
4 .0
2025-12-27
Solid performance overall. Testing across a 15km rural link connected to an HP Aruba switch without any compatibility warnings. Took about 4 days longer than expected for customs clearance, but once installed, DOM data reporting is spot on.
Please write comments with more than three
character.
488462
364984
B***g
Morocco
Verified
Purchase
5 .0
2025-12-13
Replaced our old branded optics with these LINK-PP units to cut budget on a university network expansion project. Saved thousands of dollars and performance is identical. Zero packet drops, seamless DDM integration with our SNMP monitoring tools.
Please write comments with more than three
character.
488462
364994
B***s
Germany
Verified
Purchase
5 .0
2025-08-27
Running a 2.5G home lab NAS backbone linked to the main workshop across the street (~12km). Used a pair of these simplex LC BiDi modules and got instant linkup at full duplex. Absolutely zero issues. Highly satisfied!
Please write comments with more than three
character.
488462
364990
S***z
Ukraine
Verified
Purchase
4 .0
2025-05-15
Decent product. Works seamlessly with Juniper switches after EEPROM verification. The cardboard box was slightly crushed by the courier, but ESD foam protected the transceiver securely. Happy with the purchase.
Please write comments with more than three
character.
488462
226164
M***s
Germany
Verified
Purchase
5 .0
2025-03-23
Running these BiDi SFP modules in our enterprise NAS setup for high-speed inter-rack backups. Getting full wire speed with zero CRC errors. The simplex LC interface cut our fiber patch cord clutter in half. Awesome engineering.
Please write comments with more than three
character.
488462
226167
B***z
Malaysia
Verified
Purchase
4 .0
2025-01-16
Good industrial SFP optics. Works great with our Ubiquiti gear, though the plastic dust caps were loose inside the box. Minor annoyance, but the module itself performs flawlessly up to 20km distance.
Please write comments with more than three
character.
488462
226189
S***s
Iran, Islamic Republic of
Verified
Purchase
5 .0
2024-09-19
I have ordered various items over the past couple of years, goods always arrive in a timely manner. They are well packed and do exactly what you expect them to do. Great value for money and efficient service.
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character.
488462
226175
S***k
Nepal
Verified
Purchase
5 .0
2024-09-12
Deployed in an industrial SCADA network connecting water treatment plants. The wide temperature tolerance and robust build quality stand out compared to standard commercial-grade transceivers. 1310/1490nm BiDi pairing works like a charm.
Please write comments with more than three
character.
488462
364979
E***n
Romania
Verified
Purchase
5 .0
2024-07-18
Placed the order easily, very quick shipping. What's more, the price is much lower than the original, and the products are of the same or better quality. I'm a repeat buyer.
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character.
488462
226180
K***e
Morocco
Verified
Purchase
5 .0
2024-07-10
Perfect fit for our remote tower backhaul. Industrial temp rating gives us peace of mind during winter freezing conditions. BiDi wavelength division multiplexing makes single-strand fiber utilization super efficient. ⭐
Please write comments with more than three
character.
488462
364992
E***g
Australia
Verified
Purchase
5 .0
2024-05-25
Deploys smoothly in harsh industrial outdoor cabinets. Temperature fluctuation here is wild (-25°C to +40°C), but this industrial-grade 2.5G BiDi optic hasn't dropped a single packet in three months. The 1490nm/1310nm simplex split saves precious fiber strands.
Please write comments with more than three
character.
488462
226188
F***n
United States
Verified
Purchase
5 .0
2024-05-05
Deep dive into diagnostics: tested optical budget using an OTDR and power meter. The 1490nm transmitter output power is very stable, and receiver sensitivity easily handles the 20km attenuation loss margin. DOM feature accurately tracks internal voltage and bias current. Top tier hardware for telecom engineers.
Please write comments with more than three
character.
488462
226190
J***l
United Arab Emirates
Verified
Purchase
5 .0
2024-03-06
Exactly what we needed for our WDM setup. Low insertion loss, perfect wavelength alignment, and recognized instantly by our core router. Excellent value for enterprise networking.
Singapore · English · SGD
