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The LINK-PP LS-BL31491G-20C is a premium 1G BiDi SFP optical transceiver engineered for high-performance Gigabit Ethernet. Operating over single-mode fiber, this 1000BASE-BX-U module delivers a reliable 1.25Gbps data rate. With advanced 1310nm FP laser technology and a durable simplex LC connector, it ensures seamless bidirectional networking for your communication infrastructure.
| LINK-PP Part Number | LS-BL31491G-20C | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1310nm-TX/1490nm-RX | Max Cable Distance | 20km |
| Connector | Simplex LC | Media | SMF |
| Transmitter Type |
FP | Receiver Type |
PIN |
| TX Power | -9 to 0dBm | RX Power | -23 to -1dBm |
| Receiver Sensitivity | <-23dBm | DOM Support | Yes |
| Operating Temperature Range |
0 to 70°C | Protocols |
Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
Discover the remarkable capabilities of the LINK-PP LS-BL31491G-20C 1G BiDi SFP. This hot-pluggable transceiver boasts an energy-efficient design, single-fiber bidirectional transmission, and built-in digital diagnostic monitoring. It maximizes bandwidth efficiency while offering exceptional plug-and-play convenience for modern network deployments.
The LINK-PP LS-BL31491G-20C 1G BiDi SFP optical module represents a cost-effective solution for telecommunication systems. By utilizing advanced WDM technology, this transceiver optimizes fiber utilization, making it an ideal choice for high-speed fiber-to-the-home and enterprise applications.
Upgrade your infrastructure with the LS-BL31491G-20C module, designed to deliver robust 1G connectivity for enterprise LAN backbones. This reliable Gigabit Ethernet transceiver guarantees stable, low-latency networking, ensuring continuous data flow across demanding corporate environments.
Featuring a precise 1310nm FP laser transmitter and 1490nm PIN receiver, the LS-BL31491G-20C module with 1310nm-TX and 1490nm-RX wavelength minimizes signal interference. This precise optical configuration guarantees outstanding signal integrity across your dedicated bidirectional network links.
Engineered for long-reach networking, the LS-BL31491G-20C module supporting 20km transmission excels over standard single-mode fiber. It provides an impressive link budget, making it the perfect gigabit transceiver for connecting remote switches, routers, and campus access points.
Built for easy integration, the LS-BL31491G-20C module with simplex LC interface simplifies your optical patch panel connections. This industry-standard connector ensures minimal insertion loss and highly secure physical links for your essential Gigabit networking equipment.
Proactively manage your network using the LS-BL31491G-20C module with DOM for real-time monitoring. This digital diagnostic feature accurately tracks critical parameters like temperature, voltage, and optical power, helping administrators prevent potential link failures before they happen.
Every LINK-PP LS-BL31491G-20C 1G SFP certification reflects our commitment to industry standards. These optical transceivers comply strictly with MSA specifications, ensuring outstanding safety and operational excellence globally.
The comprehensive LS-BL31491G-20C quality testing program guarantees exceptional reliability. We subject every single 1G BiDi SFP module to rigorous evaluations, verifying unmatched performance across complex enterprise networking environments.
Our transceivers hold key LS-BL31491G-20C quality certifications including CE, FCC, and RoHS. These recognized global standards demonstrate compliance with environmental safety and superior electromagnetic interference protection protocols.
The LS-BL31491G-20C certified for reliable host-device compatibility undergoes extensive switch interoperability checks. This ensures flawless plug-and-play execution alongside major networking brands like Cisco, Huawei, and HP switches.
Extensive factory inspections and rigorous testing ensures reliable SFP performance. Each transceiver passes strict optical and electrical assessments before leaving our modern facility.
The optical spectrum test validates the 1310nm FP laser center wavelength accuracy consistently.
An advanced eye pattern test confirms excellent signal integrity and minimal optical distortion.
Our bit error rate test guarantees zero packet loss during continuous gigabit transmission.
A demanding temperature test ensures stable operation within commercial zero to seventy degrees.
We prioritize secure product shipping for LINK-PP LS-BL31491G-20C 1G SFP orders, ensuring your optical modules arrive safely, swiftly, and ready for deployment.
Premium anti-static protective packaging prevents electrostatic discharge damage during transit.
Durable shock-resistant transport protection shields delicate components from physical impacts.
Experience fast order processing and dispatch for immediate networking upgrades.
Trusted global logistics and international delivery bring products worldwide seamlessly.
Watch our complete LINK-PP LS-BL31491G-20C 1G SFP usage demonstration to see the effortless installation process. Learn how to securely insert the single-mode fiber transceiver into a compatible network switch and verify operational status quickly.
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Professional technical guidance to help customers select the most suitable LS-BL31491G-20C modules based on network architecture and application requirements.
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.
15-day no-reason return and refund
Free replacement for dead-on-arrival (DOA) or defective items within the initial period
Free repair services for manufacturing defects throughout the warranty period
Warranty exclusions and conditions apply
Compatible | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP |
Data Rate (Max) | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps | 1.25Gbps |
Wavelength | 1310nm-TX/1490nm-RX | 1310nm-TX/1490nm-RX | 1310nm-TX/1490nm-RX | 1310nm-TX/1550nm-RX | 1550nm-TX/1310nm-RX | 1310nm-TX/1550nm-RX |
Connector | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC |
Cable Distance (Max) | 20km | 10km | 40km | 3km | 60km | 2km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
TX Power | -9 to 0dBm | -9 to 0dBm | -5 to 0dBm | -15 to -8dBm | -5 to 0dBm | -15 to -8dBm |
Receiver Sensitivity | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm | -23 to -1dBm |
Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
Form Factor | SFP | SFP | SFP | SFP | SFP | SFP |
Transmitter Type | FP | FP | DFB | FP | DFB | FP |
Receiver Type | PIN | PIN | PIN | PIN | PIN | PIN |
DOM Support | Yes | Yes | Yes | Yes | Yes | Yes |
Protocols | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant | Fast Ethernet, Gigabit Fibre Channel, MSA Compliant |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: Hello, will this 1.25G BiDi module work with a mix of Cisco Catalyst and Juniper EX switches? By R***z on 2026-05-15
A: Absolutely! This transceiver is fully MSA compliant and has been rigorously tested for seamless interoperability across major OEM brands, including Cisco, Juniper, and HPE. Just plug it in and you're good to go. By admin on 2026-05-15
Q: Just double-checking, does this transceiver meet standard CE and RoHS compliance for our EU facilities? By J***s on 2025-12-24
A: Yes, absolutely. All our optical transceivers strictly adhere to international quality standards, including CE, FCC, RoHS, and Class 1 FDA Laser Safety, ensuring full industry compliance for global enterprise deployments. By admin on 2025-12-24
Q: We're planning a data center mass deployment. Do you offer tier pricing if we grab 500+ units? By D***s on 2025-11-29
A: Yes, we highly support enterprise B2B procurement. For bulk orders over 500 units, we offer significant volume discounts. You can also contact our sales team directly to arrange custom net terms for your project. By admin on 2025-11-29
Q: Can I use multimode fiber with this transceiver, or is it strictly for single-mode? By A***r on 2025-10-28
A: This specific 1310nm-TX/1490nm-RX module is optimized strictly for Single-Mode Fiber (SMF) using a Simplex LC connector to achieve the 20km distance. Using multimode fiber will cause severe signal degradation and is not supported. By admin on 2025-10-28
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