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The LINK-PP LS-BL55491G-A5I is an industrial-grade 1G BiDi SFP optical transceiver designed for extreme environments. Operating from -40°C to +85°C, this single-mode module delivers up to 1.25Gbps data rates. Featuring a highly sensitive APD detector and premium DFB laser, it guarantees exceptional optical network performance across 150km transmission links.
| LINK-PP Part Number | LS-BL55491G-A5I | Vendor Name | LINK-PP |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 1550nm-TX/1490nm-RX | Max Cable Distance | 150km |
| 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 |
Discover the core advantages of the LS-BL55491G-A5I industrial transceiver. This hot-pluggable 1G BiDi SFP supports Gigabit Ethernet and 1.063Gbps Fiber Channel. Built with a robust SFP MSA compliant footprint, it ensures low power consumption, Class I laser safety, and highly reliable single-fiber communication.
This high-performance 1G BiDi SFP optical module is engineered for cost-effective networking. By combining bidirectional technology into a compact hot-swappable form factor, it maximizes fiber utilization and drastically reduces your optical infrastructure cabling costs.
Ideal for remote telecommunications, this industrial SFP transceiver provides stable 1G connectivity for base station interconnections. Its robust -40°C to +85°C operating range ensures uninterrupted gigabit data transmission in harsh outdoor telecom equipment environments.
Utilizing WDM technology, the transceiver features a precise 1550nm-TX DFB laser transmitter and a highly sensitive 1490nm-RX APD photodiode. This specific 1550nm/1490nm wavelength configuration enables seamless single-mode bidirectional fiber communication with minimal signal dispersion.
Engineered for ultra-long-haul networks, this 1G BiDi SFP module supports an impressive 150km transmission distance over single-mode fiber (SMF). The integrated APD receiver provides an exceptional -34dBm sensitivity, ensuring reliable data delivery across vast distances.
Designed for easy integration, the module is equipped with a standard simplex LC receptacle. This single LC fiber interface not only complies with SFF-8472 industry standards but also streamlines patch cord connections in dense networking panels.
Maximize network uptime with built-in Digital Optical Monitoring (DOM). Through a standard 2-wire I2C interface, administrators can instantly track critical internal diagnostics, including real-time temperature, voltage, laser bias current, and continuous TX/RX optical power levels.
Every LINK-PP LS-BL55491G-A5I 1G SFP undergoes rigorous compliance evaluations, ensuring our industrial networking products meet global regulatory standards for electrical safety and electromagnetic interference.
Our comprehensive quality testing program guarantees exceptional long-haul reliability. Each ultra-long reach transceiver passes stringent optical and electrical inspections before leaving the state-of-the-art manufacturing facility.
Demonstrating superior manufacturing integrity, this industrial grade BiDi optical module proudly carries international CE, FCC, UKCA, UL, and REACH certifications, alongside full RoHS environmental compliance.
Strictly following SFP MSA protocols, the module is thoroughly certified for reliable host-device compatibility. It ensures seamless gigabit ethernet integration across major networking switch brands.
To guarantee flawless gigabit network operation over 150km, we perform multiple strict validation procedures on every individual single-mode optical transceiver.
Evaluates the 1550nm DFB laser to ensure optimal center wavelength and minimal signal dispersion.
Analyzes transmitter modulation quality to confirm compliance with IEEE 802.3z gigabit signaling standards.
Verifies the -34dBm APD receiver sensitivity to ensure data integrity without transmission errors.
Validates stable optical power output and performance across the extreme -40°C to +85°C spectrum.
We implement professional supply chain protocols to ensure your industrial long-reach fiber optic modules arrive safely, precisely on schedule, and ready for deployment.
Each module is sealed in premium ESD-safe bags preventing electrical damage.
Custom-molded protective trays securely cushion the transceivers against severe physical impacts.
Optimized warehouse management guarantees rapid order fulfillment and immediate dispatch tracking.
Partnering with top couriers, we provide reliable worldwide shipping and customs support.
Experience seamless plug-and-play installation in your network rack. Simply insert the hot-swappable transceiver into a compatible MSA switch port, connect the simplex LC single-mode fiber, and establish an instant 150km gigabit optical link without complex configuration.
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-A5I 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) | 150km | 160km | 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: We are planning a regional substation network upgrade. Do you offer volume tier pricing or project discounts for bulk orders over 500 units? By S***r on 2026-04-21
A: Absolutely. We offer tiered bulk pricing directly on the product page (ranging from single-unit pricing down to tiered volume discounts for 100, 1,000, and 3,000+ units). For enterprise rollouts or tender bids requiring customized packaging and scheduled batch shipments, our B2B sales team can provide formal commercial quotes and net payment terms. By admin on 2026-04-21
Q: Will this 1G BiDi SFP transceiver work seamlessly with our existing Cisco Catalyst, Juniper, and MikroTik switches without triggering unsupported transceiver alarms? By D***l on 2026-03-10
A: Yes. The LS-BL55491G-A5I is built strictly to standard SFP MSA specifications and comes pre-coded for universal multi-vendor interoperability. It supports full hot-swapping and communicates transparently via SFF-8472 digital diagnostics across Cisco, Juniper, Arista, MikroTik, Ubiquiti, and other mainstream networking equipment without throwing proprietary locking errors. By admin on 2026-03-10
Q: Which fiber patch cable and matching mating transceiver do I need to establish a complete 150km BiDi connection? By P***t on 2025-12-27
A: This module requires standard Single Mode Fiber (OS2 SMF, 9/125μm) terminated with a Simplex LC connector. Because it transmits at 1550nm and receives at 1490nm (1550nm-TX / 1490nm-RX), the remote end of your fiber link must be fitted with the complementary mating transceiver: LINK-PP part number聽LS-BL49551G-A5I聽(1490nm-TX / 1550nm-RX 150km Industrial). By admin on 2025-12-27
Q: Does this optical module comply with international telecom standards, laser safety classifications, and environmental directives? By S***a on 2025-11-05
A: Yes. The transceiver strictly adheres to IEEE 802.3ah 1000BASE-BX, SFP MSA, and SFF-8472 standards. It is certified Class 1 Laser Safety compliant under IEC 60825-1, as well as CE, FCC, and RoHS compliant, fulfilling all enterprise compliance and data center deployment prerequisites. By admin on 2025-11-06
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