When it comes to long-haul fiber connectivity, not all SFP modules are created equal. LINK-PP’s LS-SM551G-A2C SFP module delivers exceptional 120km transmission distance, impressive multi-vendor compatibility, and a price point that makes it ideal for large-scale deployments. Whether you’re an enterprise network planner or a system integrator in need of reliable fiber connectivity over extreme distances, this module is designed to perform.
Why LS-SM551G-A2C Stands Out
✅ Ultra-Long 120km Transmission
With a 1550nm DFB laser and Super TIA + PIN photodetector, the LS-SM551G-A2C supports up to 120km single-mode fiber (SMF) links at 1.25Gbps. That makes it a trusted choice for long-distance point-to-point applications—like data center interconnects, metro access rings, and remote campus networking.
✅ Excellent Compatibility
Designed to seamlessly integrate into mixed-vendor environments, this SFP module is fully compatible with:
Cisco GLC-EZX-SM-120
Juniper SFP-1GE-EZX-120
Brocade E1MG-EZX-120
Arista SFP-1G-EZX-120
Alcatel-Lucent SFP-GIG-EZX
Plug it in—no special configuration required.
✅ Best-in-Class Value
Compared to similar extended-range SFP modules, LS-SM551G-A2C offers one of the best performance-to-price ratios in the market. For organizations looking to scale efficiently, every dollar counts—and this module ensures ROI without sacrificing quality.
Real-World Scenario: Surpassing 120km with Ease
One of our enterprise clients shared how the LS-SM551G-A2C surprised them during a rural fiber deployment project. Faced with a 125km fiber run between two branch locations—where laying new infrastructure was not an option—they needed a plug-and-play solution that would “just work.” Most 1G modules couldn’t maintain signal integrity over that distance.
After deploying LS-SM551G-A2C, they achieved a clean, stable link with strong power margin—no signal regeneration required. It saved both time and operational costs.
SFP 120km Modules Features at a Glance
Feature | Specification |
|---|---|
Data Rate | Up to 1.25Gbps |
Optical Wavelength | 1550nm (DFB Laser) |
Transmission Distance | Up to 120km (SMF) |
Connector | Duplex LC |
DOM Support | Yes (Real-time Digital Diagnostic Monitoring) |
Operating Temperature | 0°C to +70°C |
Hot Pluggable | Yes |
Power Supply | +3.3V |
Compliance | SFP MSA, SFF-8472, RoHS |
While Digital Diagnostic Monitoring (DOM) is standard in today’s SFP modules, the reliability and accuracy of LS-SM551G-A2C's monitoring—especially over long distances—make it a reassuring asset in mission-critical networks.
Comparison: How It Beats Other 1G EZX Modules
Compared to other 1G extended-range SFP modules tested in the field, LS-SM551G-A2C consistently earns praise for:
Stable signal transmission beyond 120km
Superior vendor compatibility without firmware issues
Cost-efficiency in volume deployment
For technical teams managing large networks, it checks all the boxes: performance, interoperability, and affordability.
Conclusion: A Go-To Module for Long-Haul Fiber Networks
If your network infrastructure demands extended-range fiber connectivity with vendor flexibility and low TCO, LINK-PP’s LS-SM551G-A2C is a smart choice. Whether it’s for a metro ring upgrade or cross-campus connectivity, this SFP module delivers where others fall short.
👉 Explore Full Specs & Download Datasheet:
🔗 Product Page – LS-SM551G-A2C
🔗 Datasheet PDF
