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LS-SC55311G-20I 1g sfp bidi 1550nm-tx 1310nm-rx 20km simplex sc ddm smf optical transceiver module (industrial)
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LINK-PP LS-SC55311G-20I 1G SFP BiDi 1550nm-TX/1310nm-RX 20km Simplex SC DDM SMF Optical Transceiver Module (Industrial)

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Product summary

Product
LINK-PP LS-SC55311G-20I 1G SFP BiDi 1550nm-TX/1310nm-RX 20km Simplex SC DDM SMF Optical Transceiver Module (Industrial)
SKU
202202
P/N
LS-SC55311G-20I
Price
$ 15.5
Stock
90 in Stock
Sold
810
For Order Over $1000 Get $15.00 Off , Code: Linkpp15
For Order Over $3000 Get $50.00 Off , Code: Linkpp50
For Order Over $5000 Get $100.00 Off , Code: Linkpp100
New Users: $10 Coupon for Orders , Code: linkpp2610
25 Reviews
4 Questions
810 Sold
Shipping:
Free Shipping
to United States via FedEx
Estimated delivery time : 3 - 10 days.
5-Year Warranty 30-Day Returns 30-Day Exchange
Warranty
  • Providing industry-leading 5-year warranty.
  • Read the table for details of all products' warranty.
Returns & Exchange
  • Refunds will be received about 5 business days after the receipt of returned items.
  • Items in stock for replacement can be shipped within 1 business day.
  • Read the full return policy for details.
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LINK-PP LS-SC55311G-20I 1G BiDi SFP Specifications

The LINK-PP LS-SC55311G-20I is an industrial Gigabit SFP transceiver engineered for robust data communication. Utilizing advanced WDM technology, this 1G BiDi optical transceiver operates over single-mode fiber to deliver reliable 1000BASE-BX connectivity. Built to withstand extreme environments, it provides exceptional network performance for critical industrial and outdoor telecom infrastructure deployments.

LINK-PP Part Number LS-SC55311G-20I Vendor Name LINK-PP
Form Factor SFP Max Data Rate 1.25Gbps
Wavelength 1550nm-TX/1310nm-RX Max Cable Distance 20km
Connector Simplex SC Media

SMF

Transmitter Type DFB Receiver Type PIN
TX Power -9 to 0dBm RX Power -23 to -1dBm
Receiver Sensitivity -23dBm Receiver Overload -3dBm
DOM Support Yes Operating Temperature Range

-40 to 85°C

Key Features of LINK-PP LS-SC55311G-20I 1G BiDi SFP

Engineered as a premium hot-pluggable module, this single fiber bidirectional transceiver integrates a high-performance DFB laser and PIN detector. As an industrial grade SFP, it guarantees seamless operation across harsh temperature ranges from -40°C to 85°C, maximizing network resilience and minimizing deployment costs.

LINK-PP LS-SC55311G-20I 1G BiDi SFP Optical Module

This highly efficient 1.25Gbps optical module adopts the standard compact SFP form factor. It offers network engineers a flexible, space-saving solution for upgrading enterprise networking equipment and expanding broadband access architectures with unmatched long-term stability.

LS-SC55311G-20I: 1G Connectivity for Mass Transit Systems

Perfect for demanding railway communication networks, this rugged transceiver plugs directly into any compatible industrial networking switch. It ensures uninterrupted, high-speed gigabit data transmission for railway signaling, subway video surveillance, and intelligent transportation systems under harsh conditions.

LS-SC55311G-20I Module with 1550nm-TX and 1310nm-RX Wavelength

Operating with a specific 1550nm-TX and 1310nm-RX configuration, this WDM SFP module transmits and receives data simultaneously over one cable. It must be paired with an opposing 1310nm-TX/1550nm-RX unit to establish a complete bidirectional optical link.

LS-SC55311G-20I Module Supporting 20km Transmission

Designed for long-haul fiber optic networks, this powerful 20km SFP transceiver overcomes distance limitations. It maintains excellent signal integrity over standard 9/125µm single-mode optical cables, making it ideal for connecting remote factory sites and distributed campus networks.

LS-SC55311G-20I Module with Simplex SC Interface

Featuring a standard simplex SC connector, this module cuts cabling requirements in half. The single SC fiber optic interface provides secure, low-loss physical connections, significantly reducing infrastructure expenses while simplifying cable management in dense telecommunication racks.

LS-SC55311G-20I Module with DDM for Real-Time Monitoring

Built-in Digital Diagnostic Monitoring allows administrators to track critical diagnostic parameters. With comprehensive DDM support, users can proactively analyze optical power, module temperature, and laser bias current, ensuring optimal network uptime and rapid fault isolation capabilities.


LINK-PP LS-SC55311G-20I 1G SFP Certification

Every certified optical transceiver strictly adheres to global industry standards. Our commitment to compliance guarantees outstanding safety, environmental protection, and uninterrupted performance across global markets.

Optical Transceivers Testing

Through stringent manufacturing quality control, each module undergoes comprehensive factory evaluations. This meticulous procedure identifies potential anomalies, ensuring only flawlessly performing gigabit transceivers reach our global customers.

LS-SC55311G-20I Quality Certifications

This industrial module officially holds FCC CE UKCA UL REACH approvals. These rigorous third-party endorsements reflect our dedication to producing eco-friendly, electrically safe, and highly secure networking hardware.

LS-SC55311G-20I Certified for Reliable Host-Device Compatibility

As a fully MSA compliant SFP, it guarantees seamless switch compatibility. It integrates effortlessly with major networking equipment brands, eliminating vendor lock-in and simplifying system upgrades.


Rigorous Testing Ensures Reliable SFP Performance

To maintain exceptional networking standards, comprehensive transceiver reliability tests are performed. These strict diagnostic assessments validate optical integrity and long-term hardware durability.

Optical

Optical Spectrum Test

Precise center wavelength analysis confirms exact 1550nm transmission for optimal laser operation.

Optical

Eye Pattern Test

Evaluating optical signal integrity ensures clear, jitter-free gigabit data transmission across single-mode networks.

Optical

Bit Error Rate Test

Continuous BER testing guarantees extremely low data packet loss during sustained high-speed communication.

Optical

Temperature Test

Subjected to extreme thermal cycling to verify absolute stability in -40°C to 85°C environments.


Product Shipping for LINK-PP LS-SC55311G-20I 1G SFP

We prioritize secure optical module delivery to preserve component integrity. Our specialized packaging safeguards delicate electronics from warehouse dispatch directly to your deployment site.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Sealed in ESD safe bags to prevent electronic component degradation entirely.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Packed securely using reinforced shipping cartons to withstand severe transit impacts.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

Rapid inventory fulfillment ensures immediate shipment of your critical network hardware.

Global Logistics and International Delivery

Global Logistics and International Delivery

Partnering with top couriers for reliable worldwide telecom distribution and prompt arrivals.

LINK-PP LS-SC55311G-20I 1G SFP Usage Demonstration

Featuring an effortless hot-swappable installation design, inserting this module into network switches requires no system downtime. Proper fiber optic patching using a clean SC simplex cable instantly establishes a robust, high-performance gigabit uplink for instant network expansion.

LS-SC55311G-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

Pre-Sales Technical Consultation

Professional technical guidance to help customers select the most suitable LS-SC55311G-20I modules based on network architecture and application requirements.

Compatibility Verification Support

Compatibility Verification Support

Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.

Deployment & Installation Assistance

Deployment & Installation Assistance

Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.

Long-Term Technical Assurance

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.

LINK-PP LS-SC55311G-20I 1G SFP After-Sales Assurance

LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.

15 days

15-day no-reason return and refund

Free maintenance or replacement

Free replacement for dead-on-arrival (DOA) or defective items within the initial period

Free maintenance

 Free repair services for manufacturing defects throughout the warranty period

Limitations

Warranty exclusions and conditions apply

Model Comparison Table

LINK-PP

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P***n
United States
Verified Purchase
5 .0
2026-07-22
Switched to these Simplex SC modules for rack links. Saved tons on fiber cabling!
S***a
Macao
Verified Purchase
5 .0
2026-07-02
Installed this 1G BiDi SFP in our factory; the industrial wide-temp handles heat perfectly.
D***r
Italy
Verified Purchase
5 .0
2026-06-10
Good build quality, simplex SC saves fibers.
J***l
Ecuador
Verified Purchase
5 .0
2026-05-22
Best 20km single-mode SFP for the price!
M***e
Switzerland
Verified Purchase
5 .0
2026-05-11
Tested Cisco compatible BiDi SFP against multiple switch brands in our data center interconnect. Flawless DOM monitoring, zero packet loss over 20km single-mode SFP links. Excellent bulk procurement value!
A***e
Belgium
Verified Purchase
5 .0
2026-04-06
Handles 20km transmission without any weird hiccups.
C***n
Austria
Verified Purchase
5 .0
2026-04-06
Excellent transceiver for railway communication networks. The -40 to 85°C rating is a lifesaver.
A***s
Republic of Korea
Verified Purchase
5 .0
2026-03-28
Perfect for our outdoor fiber network cabinet.
J***e
Saudi Arabia
Verified Purchase
4 .0
2026-03-25
Box arrived a bit crushed, but the industrial SC transceiver works flawlessly outdoors.
C***n
Chile
Verified Purchase
5 .0
2026-03-22
Great DDM SFP module, super fast delivery!
C***z
Brazil
Verified Purchase
5 .0
2026-03-05
Used these for a local ISP broadband access project. The 1.25Gbps throughput is stable.
P***a
Macao
Verified Purchase
5 .0
2026-02-24
Reliable 1550nm-TX/1310nm-RX pair for campus networks.
S***a
Poland
Verified Purchase
5 .0
2026-02-02
Ideal SMF optical transceiver for harsh environments.
M***n
Peru
Verified Purchase
5 .0
2025-11-15
DDM readings on this 20km single-mode SFP match our expensive OEM optics exactly.
S***s
Kuwait
Verified Purchase
5 .0
2025-11-09
Fits snugly into our multi-brand switches. The 1550nm-TX transmitter pushes strong signals over SMF.
S***e
Peru
Verified Purchase
5 .0
2025-10-17
Using this 1G module for an industrial automation site and my home 10G NAS management link. The SC connector is robust, DDM support is handy. Solid optical transceiver!
M***n
Sweden
Verified Purchase
5 .0
2025-10-14
Deployed these 1550nm-TX/1310nm-RX modules in our outdoor cabinets for base station backhaul. The -40 to 85°C industrial rating is legit. DDM readings are incredibly stable despite extreme weather.
J***l
Panama
Verified Purchase
5 .0
2025-08-30
Great value for data center batch deployment. The Simplex SC connector is incredibly sturdy.
T***s
Panama
Verified Purchase
5 .0
2025-07-14
DOM monitoring is accurate. Highly recommend it!
B***e
Ecuador
Verified Purchase
5 .0
2025-06-22
Industrial SC transceiver works at -40°C easily.
R***s
France
Verified Purchase
4 .0
2025-06-09
Shipping took 5 days instead of 3, yet the 1G BiDi SFP performs well.
K***l
Norway
Verified Purchase
5 .0
2025-05-29
Upgraded a campus fiber network using this Simplex SC DDM SMF optical transceiver. Halved our fiber requirements instantly. Signal stays strong at -20dBm RX power across a 15km run.
E***s
Sweden
Verified Purchase
5 .0
2025-05-27
Solid Cisco compatible BiDi SFP network module.
T***z
Panama
Verified Purchase
5 .0
2025-05-23
Replaced a failed OEM unit with this 1G BiDi SFP. Works right out the box! ✨
D***n
Finland
Verified Purchase
5 .0
2025-05-08
Flawless 1G Simplex SC transceiver. Plug and play.
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