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LINK-PP LS-SM312G-20C 2.5G SFP 1310nm 20km DOM Duplex LC SMF Optical Transceiver Module
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LINK-PP LS-SM312G-20C 2.5G SFP 1310nm 20km DOM Duplex LC SMF Optical Transceiver Module

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Product summary

Product
LINK-PP LS-SM312G-20C 2.5G SFP 1310nm 20km DOM Duplex LC SMF Optical Transceiver Module
SKU
183289
P/N
LS-SM312G-20C
Price
$ 7.06
Stock
880 in Stock
Sold
1.1K
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
45 Reviews
5 Questions
1.1K Sold
$ 7.06 0% OFF )
Free shipping. For wholesale pricing, please contact us directly.
Qty (pcs) :
Unit Price :
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$ 7.06
100
$ 6.707
1000
$ 6.496
3000
$ 6.284
6000
$ 6.072
Manufacture: LINK-PP P/N: LS-SM312G-20C SKU: 183289
Compatible:
LINK-PP
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-SM312G-20C 2.5G SFP Specifications

Engineered for high-speed fiber optic networks, this high-performance transceiver delivers reliable data transmission rates up to 2.5Gbps over single-mode fiber infrastructure. Operating on a single 3.3V power supply, the hot-pluggable module integrates a 1310nm DFB laser and a PIN photodiode, meeting strict SFP Multi-Source Agreement and SFF-8472 industry standards for modern networking environments.

LINK-PP Part Number LS-SM312G-20C Vendor Name LINK-PP
Form Factor SFP Max Data Rate 2.5Gbps
Wavelength 1310nm Max Cable Distance 20km
Connector Duplex LC Media SMF
Transmitter Type DFB Receiver Type PIN
Receiver Sensitivity -18dBm DDM/DOM Supported
TX Power -6 to +1dBm RX Power -20 to -1dBm
Operating Temperature Range 0 to 70°C Protocols MSA Compliant

Key Features of LINK-PP LS-SM312G-20C 2.5G SFP

Featuring a hot-swappable design for effortless deployment, this 2.5G optical transceiver supports low-latency Gigabit transmission over extended distances. It combines energy-efficient power consumption, real-time diagnostic telemetry, and robust electromagnetic shielding to ensure smooth, continuous network operation across standard enterprise and commercial operating temperature ranges.

LINK-PP LS-SM312G-20C 2.5G SFP Optical Module

This compact optical transceiver module provides cost-effective, high-bandwidth connectivity for optical interconnect systems. Built with top-grade transmitter and receiver components, it ensures superior signal integrity, low jitter, and exceptional reliability for demanding data transmission.

LS-SM312G-20C: 2.5G Connectivity for Telecommunication Networks

Designed specifically to empower telecom infrastructure, Fiber Channel links, and Ethernet switches, this transceiver offers seamless 2.5G data transfer. It optimizes network bandwidth and stabilizes long-haul connectivity across core switches and routing hardware.

LS-SM312G-20C Module with 1310nm Wavelength

Utilizing a precise 1310nm DFB laser transmitter, the module achieves minimal chromatic dispersion over single-mode optical fibers. This specialized wavelength ensures crisp signal transmission and optimal optical performance across medium-reach optical communications.

LS-SM312G-20C Module Supporting 20km Transmission

Capable of spanning reach distances up to 20km over single-mode fiber (SMF), this SFP module eliminates the need for intermediate repeaters, making it an ideal choice for campus backbones and metro networks.

LS-SM312G-20C Module with Duplex LC Interface

Equipped with an industry-standard duplex LC receptacle, the transceiver allows quick, secure fiber optic cable connections. The rugged latching mechanism guarantees stable insertion and minimal optical return loss during heavy network usage.

LS-SM312G-20C Module with DOM for Real-Time Monitoring

Integrated Digital Optical Monitoring (DOM) capabilities provide real-time tracking of critical operational parameters, including laser bias current, supply voltage, operating temperature, and optical output/input power through a standard 2-wire serial interface.


LINK-PP LS-SM312G-20C 2.5G SFP Certification

Built under strict quality control management systems, this optical module fully complies with global safety, environmental, and electromagnetic standards, ensuring reliable, eco-friendly performance for mission-critical network infrastructure.

Optical Transceivers Testing

Every optical transceiver undergoes comprehensive multi-stage production screening, including electrical validation, optical parameter calibration, and functional testing to guarantee flawless operation upon installation in enterprise equipment.

LS-SM312G-20C Quality Certifications

The module holds official CE, FCC, UKCA, UL, and REACH certifications, confirming compliance with international safety requirements, electromagnetic compatibility, and strict environmental hazardous substance regulations.

LS-SM312G-20C Certified for Reliable Host-Device Compatibility

Multi-Source Agreement compliance guarantees seamless hardware interoperability with major network switches, routers, and host devices, ensuring effortless plug and play deployment across modern enterprise network infrastructure environments.


Rigorous Testing Ensures Reliable SFP Performance

Extensive quality assurance procedures guarantee that every transceiver meets strict optical performance criteria, delivering continuous reliability and long-term durability in active data centers.

Optical

Optical Spectrum Test

Spectral analysis validates precise 1310nm central wavelength alignment and strict side-mode suppression ratio standards.

Optical

Eye Pattern Test

High-speed oscilloscope testing verifies clean optical eye diagrams with low jitter and excellent extinction ratios.

Optical

Bit Error Rate Test

Comprehensive BER testing confirms error-free data transmission performance exceeding BER thresholds of 1×10⁻¹².

Optical

Temperature Test

Thermal chamber testing confirms stable optical output and sensitivity across full operating temperature ranges.


Product Shipping for LINK-PP LS-SM312G-20C 2.5G SFP

Secure packaging and streamlined fulfillment protocols ensure optical transceiver products arrive safely and promptly to support global network installation schedules.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Modules are individually sealed in ESD-shielding anti-static bags to prevent electrostatic damage.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Custom foam cushioning protects optical interfaces against physical impacts during transit.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

Efficient warehouse management ensures rapid order handling and prompt shipment dispatch.

Global Logistics and International Delivery

Global Logistics and International Delivery

Reliable courier partnerships guarantee fast worldwide delivery to your door.

LINK-PP LS-SM312G-20C 2.5G SFP Usage Demonstration

Easily insert the hot-pluggable module into any SFP port on your compatible switch or router, connect a single-mode duplex LC fiber patch cable, and immediately experience reliable 2.5Gbps high-speed optical networking.

LS-SM312G-20C 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-SM312G-20C 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-SM312G-20C 2.5G 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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No data
D***z
Netherlands
Verified Purchase
5 .0
2026-08-17
Consistent -6 to +1dBm TX power across the 50 units we bulk ordered.
D***n
Germany
Verified Purchase
5 .0
2026-08-14
Great SMF LC optics for campus fiber networking.
S***z
Poland
Verified Purchase
5 .0
2026-08-04
Using this Link-PP LS-SM312G-20C for a high-speed 2.5G NAS cluster in our main data center. The 20km distance covers our cross-site interconnect perfectly without extra repeaters. Highly recommended for ops teams.
M***z
Philippines
Verified Purchase
5 .0
2026-08-01
We needed reliable 2.5Gbps single mode modules for base station backhaul. Even in our enclosed cabinets hitting 65°C, these commercial 0 to 70°C transceivers maintained perfect signal integrity and zero jitter.
M***g
Chile
Verified Purchase
5 .0
2026-07-27
The duplex LC connector latches firmly. Good build quality for a 20km SMF module.
S***r
Macao
Verified Purchase
5 .0
2026-07-10
Upgraded our indoor network with this 2.5G SFP 1310nm 20km. Excellent DOM support!
B***r
Spain
Verified Purchase
5 .0
2026-07-04
Perfect fit for our 2.5G NAS setup. ^^
N***z
Italy
Verified Purchase
5 .0
2026-06-16
Cheap and reliable 2.5G SFP 1310nm 20km.
A***h
Bolivia
Verified Purchase
4 .0
2026-05-30
Delivery took an extra day. Otherwise, these 1310nm 20km transceivers are solid for my lab. -_-
A***k
Poland
Verified Purchase
5 .0
2026-05-11
Tested this DOM Duplex LC SMF Optical Transceiver Module in our multi-vendor core network. The 1310nm DFB laser pushes a clean 2.5Gbps over 15km SMF. DDM telemetry integrates seamlessly via CLI.
M***z
Netherlands
Verified Purchase
5 .0
2026-03-24
Nice bulk deal on these 1310nm DFB modules.
E***n
Argentina
Verified Purchase
5 .0
2026-03-05
Installed these 1310nm transceivers for a local ISP backbone. No packet loss so far!
C***z
Norway
Verified Purchase
5 .0
2026-02-25
Fantastic Link-PP optical transceiver. Used them for a batch of enterprise edge routers successfully.
D***s
Ecuador
Verified Purchase
4 .0
2026-02-19
Box was slightly dented upon arrival, but the 2.5G SFP modules work perfectly.
S***n
Norway
Verified Purchase
5 .0
2026-02-04
MSA compliant 2.5G SFP, zero compatibility issues here.
A***z
Czech Republic
Verified Purchase
5 .0
2026-01-27
Single mode 2.5Gbps connections are rock solid. Way better than my old copper setup.
P***s
Switzerland
Verified Purchase
5 .0
2026-01-21
Flawless 2.5Gbps single mode module!
J***r
Bolivia
Verified Purchase
5 .0
2026-01-13
Link-PP 2.5G optic runs cool at 0-70°C. ❄️
M***h
Spain
Verified Purchase
5 .0
2025-12-13
Dropped latency instantly on our base station backhaul!
J***z
Ecuador
Verified Purchase
5 .0
2025-12-01
DOM duplex LC SMF works straight out perfectly!
M***s
Bolivia
Verified Purchase
5 .0
2025-11-29
Solid optical transceiver module for data center interconnect.
S***l
Russian Federation
Verified Purchase
5 .0
2025-11-03
Multi-brand switch compatibility is legit. Plugged right in without OEM vendor lock-in errors.
N***z
Costa Rica
Verified Purchase
5 .0
2025-10-16
DDM features read accurately on our core switch.
M***s
Italy
Verified Purchase
5 .0
2025-10-11
Ideal for our server room. Operates well within the 0 to 70°C commercial range.
A***s
Czech Republic
Verified Purchase
5 .0
2025-10-09
Deployed a batch of MSA compliant 2.5G SFP optics for campus fiber networking. TX/RX power levels hit exact datasheet specs. Massive budget saver compared to overpriced OEM branded transceivers!
S***m
Canada
Verified Purchase
5 .0
2024-08-07
I have purchased Optical Transceiver Modules in the past and would not hesitate to purchase again.
M***y
Turkey
Verified Purchase
5 .0
2024-07-21
Great Price. Great Customer Service. Answered their phone promptly - shipped with great packaging. I would definitely shop here again.thank you!
R***o
Taiwan, Province of China
Verified Purchase
5 .0
2024-07-19
love the selection and prices!
S***e
Indonesia
Verified Purchase
5 .0
2024-04-10
Very reasonable price. Well detailed information.
C***s
Singapore
Verified Purchase
5 .0
2024-04-05
Guess what: they worked right away, from the moment I put them in the switch! So I am happy. Happy that the ethernet port are the right ones, happy with you handling my case and happy with LINK-PP as a company with such a great customer care.
M***n
Mexico
Verified Purchase
5 .0
2024-01-19
This was a nice deal online. I got warranty Optical Transceiver Module at an incredible price.
H***a
United States
Verified Purchase
5 .0
2024-01-03
brilliant product, delivered earlier than originally stated and work excellent
C***o
United States
Verified Purchase
5 .0
2023-12-31
These are the best Optical Transceiver Modules I’ve used. They are WAY better than the cheap ones that fail all the time.They feel high quality as well! You definitely get what you pay for in this instance. Well worth the money.
M***m
Republic of Korea
Verified Purchase
5 .0
2023-12-08
Excellent price and easy website. just placed the order so I can't comment on delivery yet.
A***r
Italy
Verified Purchase
5 .0
2023-09-16
First purchase a very pleasant experience
I***i
United States
Verified Purchase
5 .0
2023-07-09
Was impressed with the quality of the items I got.
H***n
United States
Verified Purchase
5 .0
2023-06-03
The Optical Transceiver Module works well now. I like to communicate with these professional people and also like their good products.
M***k
South Africa
Verified Purchase
5 .0
2023-04-28
Good quality and I will recommend.
T***n
United States
Verified Purchase
5 .0
2023-04-13
Everything went smoothly and products were delivered on time! I just regeret not finding this place earlier and that would help me save both time and money. It is really great, I will definitely come back again!
M***y
Indonesia
Verified Purchase
5 .0
2023-04-04
l-p.com is the best optical transceiver store, which i know. I received perform well.
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