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The LINK-PP LS-BL55491G-A6I is a rugged industrial optical transceiver engineered for highly demanding network environments. This premium Gigabit Ethernet SFP delivers exceptionally stable 1.25Gbps single-mode module performance across extreme temperatures ranging from -40°C to 85°C. Utilizing advanced DFB and APD technologies, it guarantees outstanding link reliability for extended telecommunication infrastructure.
| LINK-PP Part Number | LS-BL55491G-A6I | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1550nm-TX/1490nm-RX | Max Cable Distance | 160km |
| Connector | Simplex LC | Media | SMF |
| Transmitter Type |
DFB | Receiver Type |
APD |
| TX Power | 0 to +5dBm | RX Power | -28 to -1dBm |
| Receiver Sensitivity | <-34dBm | DOM Support | Yes |
| Operating Temperature Range | -40 to 85°C | Protocols |
SFP MSA、SFF-8472 |
This bi-directional SFP maximizes fiber utilization by adopting advanced WDM optical module technology. As a high-performance single fiber transceiver, it ensures reliable bi-directional data flow over existing single-mode fiber infrastructure, significantly reducing cabling costs while maintaining robust, long-haul gigabit network connections.
Functioning as a highly reliable 1G optical module, this hot-pluggable transceiver seamlessly integrates into industrial networking equipment. Its robust design guarantees sustained gigabit throughput, making it ideal for harsh outdoor telecommunication enclosures and critical data environments.
Engineered for critical remote network monitoring, this module provides seamless DAS fiber connectivity. It ensures uninterrupted signal transmission between baseband units and remote radio heads, delivering the essential high-speed gigabit bandwidth required for comprehensive antenna systems.
Utilizing specific BIDI wavelength multiplexing, the transceiver integrates a powerful 1550nm DFB laser alongside a highly sensitive 1490nm APD receiver. This specialized optic combination ensures precise signal integrity and minimal dispersion across extensive long-haul fiber connections.
Designed to conquer extreme distances, this 160km SFP module eliminates the immediate need for costly inline amplifiers. As an ultra-long haul transceiver, it provides a massive optical budget to bridge remote network nodes reliably.
Featuring a standardized Simplex LC connector, this interface significantly simplifies physical network deployments. The precision-engineered LC optical interface ensures extremely low insertion loss, maintaining tight fiber alignment to maximize signal retention over lengthy single-mode cables.
Equipped with advanced Digital Optical Monitoring, this DOM SFP allows network administrators to access crucial optical parameter tracking. It enables precise, real-time observation of laser temperature, transceiver voltage, and optical power levels to prevent link failures.
As a fully regulatory compliant SFP, this industry standard optic meets rigorous global safety regulations, ensuring secure and hazard-free deployment in diverse international enterprise networks.
Every unit undergoes a comprehensive transceiver testing procedure. Our highly stringent quality control optics program ensures stable gigabit performance and effectively minimizes defect rates before network deployment.
This CE FCC certified SFP is also a deeply trusted UL listed transceiver. It fully complies with strict UKCA and REACH environmental and electrical safety directives.
Engineered as a universally switch compatible SFP, this highly interoperable transceiver guarantees seamless integration with major industrial networking equipment, ensuring plug-and-play functionality without vendor lock-in.
Thorough optical performance validation is conducted on every single unit, guaranteeing exceptional stability and flawless data transmission across complex networking architectures.
Precision wavelength accuracy is verified to ensure optimal BIDI laser signal integrity.
Advanced signal clarity assessment ensures clean gigabit data transmission with minimal jitter.
Continuous low BER validation guarantees virtually error-free communication over extreme fiber distances.
Severe industrial thermal testing confirms flawless operation between -40°C and 85°C environments.
Our streamlined transceiver fulfillment process guarantees that your industrial optical modules arrive securely and promptly, fully prepared for immediate network installation.
Specialized ESD safe optic packaging completely shields sensitive components from electrical damage.
Impact resistant shipping materials securely prevent physical module damage during rough transit.
Rapid order dispatch systems ensure your vital networking equipment ships without delay.
Reliable worldwide SFP delivery connects your critical infrastructure projects across any continent.
For successful transceiver deployment, gently insert the module into the host port until it clicks. Proper fiber network installation requires pairing this specific unit with a complementary 1490nm-TX module to establish a flawless, bi-directional gigabit link.
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-BL55491G-A6I 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 | 1550nm-TX/1490nm-RX | 1550nm-TX/1490nm-RX | 1550nm-TX/1490nm-RX | 1550nm-TX/1490nm-RX | 1550nm-TX/1490nm-RX | 1550nm-TX/1490nm-RX |
Connector | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC | Simplex LC |
Cable Distance (Max) | 160km | 150km | 100km | 120km | 10km | 80km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
TX Power | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm | 0 to +5dBm |
Receiver Sensitivity | -28 to -1dBm | -28 to -1dBm | -28 to -1dBm | -28 to -1dBm | -26 to -1dBm | -26 to -1dBm |
Operating Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
Form Factor | SFP | SFP | SFP | SFP | SFP | SFP |
Transmitter Type | DFB | DFB | DFB | DFB | DFB | DFB |
Receiver Type | APD | APD | PIN | APD | PIN | PIN |
DOM Support | Yes | Yes | Yes | Yes | Yes | Yes |
Protocols | SFP MSA、SFF-8472 | SFP MSA、SFF-8472 | 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: Can I use multimode fiber with this specific 1550nm-TX/1490nm-RX transceiver, or is it strictly for single-mode fiber (SMF)? By M***r on 2026-03-26
A: This specific BiDi transceiver is designed exclusively for Single-Mode Fiber (SMF) via a Simplex LC connector to achieve its 160km ultra-long transmission distance. Multimode fiber is not supported. By admin on 2026-03-26
Q: What’s the typical lead time if we need 200 units of this industrial SFP simplex LC module delivered to our US facility? By W***s on 2025-12-27
A: We maintain a highly stable supply chain with deep inventory. For a 200-unit batch, lead time is typically just 3-5 business days for global delivery, ensuring your project timelines are met. By admin on 2025-12-27
Q: We're building a network for a government utility project. Are these fiber modules compliant with UKCA, RoHS, and CE standards? By M***s on 2025-10-14
A: Yes, this model fully complies with UKCA, RoHS, CE, and ISO14001/ISO45001 standards, ensuring it meets all strict regulatory and environmental safety requirements for enterprise or public sector deployments. By admin on 2025-10-14
Q: We're planning a massive datacenter upgrade next quarter. Do you offer volume discounts for bulk purchasing these 1550nm/1490nm optical modules? By S***l on 2025-01-25
A: Absolutely. We support B2B clients with tiered bulk pricing to help optimize your procurement budget. Please reach out to our sales team directly to get a custom volume quote. By admin on 2025-01-25
Q: Will this 1G BiDi SFP module play nice with a mix of Cisco Catalyst and Juniper EX switches on the same fiber run? By L***n on 2024-12-28
A: Yes! Our 1G BiDi SFP transceivers are MSA compliant and feature excellent OEM compatibility. They interoperate seamlessly across major brands like Cisco, Juniper, and Aruba without port errors. By admin on 2024-12-28
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