What is the maximum physical distance this 155M single-mode SFP module can reliably support?

It is engineered to maintain a clean link budget over single-mode fiber spans up to 20km.

Will this commercial-grade SFP module overheat if deployed in a fully loaded, high-density top-of-rack switch?

No, it features low power dissipation properties, ensuring it stays well within thermal limits under full continuous traffic loads.

Does this 100BASE-LX SFP transceiver comply with the SFF-8472 standard for Digital Optical Monitoring?

Yes, it features full SFF-8472 compliance, giving you real-time access to critical operating metrics.

Do these 155M SFP modules come with a warranty for enterprise deployments?

Yes, all our commercial-grade optical transceivers are backed by a comprehensive 1-3 years of hardware warranty.

Breadcrumb: Home; Products; Optics Transceivers | SFP Modules; 1/2/4G Transceiver Modules; 100M SFP; 183989

Click to open expanded view

LINK-PP LS-SM3101-20C 155M SFP 1310nm 20km Duplex LC DOM SMF Optical Transceiver Module

Name: LINK-PP LS-SM3101-20C 155M SFP 1310nm 20km Duplex LC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 183989
Price: 5.762 USD
Availability: InStock
Rating: 4.8 (16 reviews)

Product: LINK-PP LS-SM3101-20C 155M SFP 1310nm 20km Duplex LC DOM SMF Optical Transceiver Module
SKU: 183989
P/N: LS-SM3101-20C
Price: $ 6.7
Stock: 590 in Stock
Sold: 610
Product URL: https://www.l-p.com/products/478922.htm

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

16 Reviews

4 Questions

610 Sold

$ 6.7

Free shipping. For wholesale pricing, please contact us directly.

Qty (pcs) :

Unit Price :

$ 6.7

100

$ 6.365

1000

$ 6.164

3000

$ 5.963

6000

$ 5.762

Manufacture: LINK-PP P/N: LS-SM3101-20C SKU: 183989

Compatible:: LINK-PP; FS; H3C

Compatible P/N:: LS-SM3101-10C | 10km; LS-SM3101-10I | 10km; LS-SM3101-15C | 15km; LS-SM3101-20C | 20km; LS-SM3101-20I | 20km; LS-SM3101-40C | 40km; LS-SM3101-40I | 40km; LS-SM5501-80C | 80km; LS-SM5501-80I | 80km; LS-SM5501-A2C | 120km; LS-SM5501-A2I | 120km

Shipping:

Free Shipping

to United States via FedEx

Estimated delivery time : 3-10 days.

5-Year Warranty 30-Day Returns 30-Day Exchange

Stock:

{{parseInt(detail_data.left_num) ? detail_data.left_num +' in Stock' :detail_data.zeroStockOrder==0?'Out of Stock':'Available'}} .

Quantity:

( Min. Order {{detail_data.prodInfo.minimum_ordered_quantity}} )

Total Price:

{{ detail_data.displayed_price.unit_prefix }} {{ detail_data.displayed_price.original_total_price }} ( {{ detail_data.displayed_price.rate_of_discount }}% OFF ) {{detail_data.displayed_price.ex_sell_type}}

Specifications
Features
Certification
Testing
Shipping
Usage
Support
Assurance
Comparison
Specification
Matching Products
Download
Q&A
Customer Reviews

LINK-PP LS-SM3101-20C 155M SFP Specifications

LS-SM3101-20C constitutes a sophisticated 155M SFP single-mode optical transceiver, leveraging the precise synergy of a 1310nm FP laser and a PIN photodetector to facilitate 20km transmission reach while maintaining operational consistency across a 0°C to 70°C temperature spectrum.

LINK-PP Part Number	LS-SM3101-20C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	1310nm	Max Cable Distance	20km
Connector	Duplex LC	Media	SMF
Transmitter Type	FP	Receiver Type	PIN
TX Power	-14 to -8dBm	RX Power	-32 to -6dBm
Receiver Sensitivity	-32dBm	DOM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	IEEE802.3ab, GR-468, MSA Compliant

Key Features of LINK-PP LS-SM3101-20C 155M SFP

LINK-PP LS-SM3101-20C represents a versatile 155M SFP optical transceiver module designed to deliver stable connectivity over a 20km transmission distance. This module integrates a duplex LC interface and Digital Optical Monitoring (DOM) to ensure reliable real-time tracking of critical operating metrics. It serves as a compliant and efficient solution for optimizing localized network infrastructure and standard fast ethernet links.

LINK-PP LS-SM3101-20C 155M SFP Optical Module

This module fully complies with the 100BASE-LX standard, providing a seamless integration path for legacy platforms requiring structured hardware configurations. Built in strict adherence to the SFP Multi-Source Agreement (MSA), it guarantees comprehensive hardware compatibility across diverse vendor platforms. Additionally, it supports standard SFF-8472 digital diagnostics functions to facilitate regular system updates and proactive maintenance.

LS-SM3101-20C: 155 Mbps Connectivity for Legacy Telecom Backhaul

Operating at a designated data rate of 155Mbps, this transceiver provides the exact bandwidth required to sustain standard Fast Ethernet and specialized telecommunications backhaul interfaces. It maintains consistent data throughput across legacy network frameworks without introducing unnecessary power or hardware overhead. This specific data profile makes it ideal for utility grids and older transport networks that rely on dedicated low-speed aggregation.

LS-SM3101-20C Module with 1310nm Wavelength

The module utilizes a specialized 1310nm optical window to achieve an optimal balance between signal attenuation and dispersion characteristics. This mainstream wavelength choice ensures wide compatibility with standard optical test sets and existing patch panels. By centering the signal path at 1310nm, the system minimizes internal losses to safeguard overall link margins.

LS-SM3101-20C Module Supporting 20km Transmission

Engineered to extend connectivity across expanded regional architectures, this transceiver easily bridges distances up to 20km. The 20km reach allows network engineers to establish dependable connections between distant campus buildings or edge nodes. It provides sufficient optical budget to handle common link challenges such as attenuation and aging fiber infrastructure.

LS-SM3101-20C Module with Duplex LC Interface

Featuring an industry-standard duplex LC connector layout, this interface enables swift, reliable connections and excellent structural density in crowded patch panels. The physical design ensures low insertion loss and secure physical contact for consistent signal transmission. Its compact footprint simplifies cable routing and fits effortlessly into dense network environments.

LS-SM3101-20C Module with DOM for Real-Time Monitoring

Equipped with built-in Digital Optical Monitoring (DOM), the module allows network administrators to trace laser telemetry data without taking the link offline. This function tracks operational parameters like internal temperature, supply voltage, and received optical power levels. These actionable insights help technical teams detect faults early and prevent sudden system downtime.

LINK-PP LS-SM3101-20C 155M SFP Certification

LINK-PP LS-SM3101-20C 155M SFP module adheres to strict international regulatory frameworks, including ISO 9001, CE, RoHS, and FCC standards to ensure hardware safety, manufacturing quality, and environmental compliance.

LS-SM3101-20C Quality Testing Program

Every module undergoes rigorous factory testing protocols to verify optical performance, signal integrity, and structural reliability before shipment.

LS-SM3101-20C Quality Certifications

These recognized standard credentials ensure that the transceiver meets uniform production rules and industry safety mandates for global network deployments.

LS-SM3101-20C Certified for Reliable Host-Device Compatibility

The module is strictly verified across multiple hardware platforms to guarantee plug-and-play operation and seamless communication with diverse network switches.

Rigorous Testing Ensures Reliable SFP Performance

Every module undergoes thorough evaluation to guarantee stable data transmission, and you can explore our complete protocols through the LINK-PP Test Support Center.

Rigorous Testing Ensures Reliable Transceiver Performance

Optical Spectrum Test

Verify central wavelength accuracy and spectral width parameters.

Eye Pattern Test

Analyze signal quality and optical transmitter wave shapes.

Bit Error Rate Test

Measure data transmission accuracy across varying link budgets.

Temperature Test

Confirm structural reliability under diverse thermal operating conditions.

Product Shipping for LINK-PP LS-SM3101-20C 155M SFP

We provide secure global transit and optimized order handling for every module. Our efficient logistics network ensures safe, timely arrival.

Anti-Static Protective Packaging

Shield fragile optical components from damaging electrostatic discharge during handling.

Shock-Resistant Transport Protection

Safeguard optical transceivers against physical impacts during long-distance transit.

Fast Order Processing and Dispatch

Accelerate shipment preparation to minimize delivery waiting times for customers.

Global Logistics and International Delivery

Transport items securely across global regions using dependable shipping networks.

LINK-PP LS-SM3101-20C 155M SFP Usage Demonstration

Designed for commercial network layouts, the LS-SM3101-20C 155M SFP transceiver establishes secure, long-range links across smart grid infrastructures and campus networks. Users can quickly insert this hot-pluggable transceiver module into compatible host ports to drive automated control systems, legacy backhaul architectures, and enterprise fiber networks.

LS-SM3101-20C Technical Support

LINK-PP offers end-to-end technical support, from pre-sales consultation to post-deployment assistance, ensuring smooth integration and reliable network performance.

Pre-Sales Technical Consultation

Professional guidance to help you select the optimal LS-SM3101-20C module for your network design and application needs.

Compatibility Verification Support

Validated compatibility with LINK-PP switches and other mainstream networking platforms for seamless deployment.

Deployment & Installation Assistance

Comprehensive step-by-step guidance for installation, configuration, and initial setup, ensuring accurate deployment and reliable, stable operation from the start.

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle, delivering long-term stability for enterprise and carrier-grade networks.

LINK-PP LS-SM3101-20C 155M SFP After-Sales Assurance

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

Model Comparison Table

	Current Model LS-SM3101-20C	LS-SM3101-15C	LS-SM3101-10C	LS-SM3101-40I	LS-SM5501-80C	LS-MM8501-S5C

Compatible	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP	LINK-PP
Data Rate (Max)	155Mbps	155Mbps	155Mbps	155Mbps	155Mbps	155Mbps
Wavelength	1310nm	1310nm	1310nm	1310nm	1550nm	850nm
Connector	Duplex LC	Duplex LC	Duplex LC	Duplex LC	Duplex LC	Duplex LC
Cable Distance (Max)	20km	15km	10km	40km	80km	550m
Cable Type	SMF	SMF	SMF	SMF	SMF	MMF
TX Power	-14 to -8dBm	-14 to -8dBm	-14 to -8dBm	-14 to -8dBm	-14 to -8dBm	-14 to -8dBm
Receiver Sensitivity	-32dBm	-32dBm	-32dBm	-32dBm	< -32dBm	-23dBm
Operating Temperature	0 to 70°C	0 to 70°C	0 to 70°C	-40 to +85°C	0 to 70°C	0 to 70°C
Form Factor	SFP	SFP	SFP	SFP	SFP	SFP
Transmitter Type	FP	DFB	FP	DFB	DFB	VSCEL
Receiver Type	PIN	PIN	PIN	PIN	PIN	PIN
DOM Support	Yes	Yes		Yes	Yes
Protocols	IEEE802.3ab, GR-468, MSA Compliant	GR-468, MSA Compliant	IEEE802.3ab, GR-468, MSA Compliant	GR-468, MSA Compliant	GR-468, MSA Compliant	MSA Compliant

Action

Matching Products

Pictures

ID#

Description

Price

Stock

Add to Cart

Download

Product Drawing

PDF
LS-SM3101-20C.pdf

Questions & Answers
Ask a Question

No data

Q: What is the maximum physical distance this 155M single-mode SFP module can reliably support? By F***n on 2026-02-22

A: It is engineered to maintain a clean link budget over single-mode fiber spans up to 20km. By admin on 2026-02-23
Q: Will this commercial-grade SFP module overheat if deployed in a fully loaded, high-density top-of-rack switch? By C***w on 2026-01-18

A: No, it features low power dissipation properties, ensuring it stays well within thermal limits under full continuous traffic loads. By admin on 2026-01-19
Q: Does this 100BASE-LX SFP transceiver comply with the SFF-8472 standard for Digital Optical Monitoring? By G***y on 2025-12-30

A: Yes, it features full SFF-8472 compliance, giving you real-time access to critical operating metrics. By admin on 2025-12-31
Q: Do these 155M SFP modules come with a warranty for enterprise deployments? By J***n on 2025-12-05

A: Yes, all our commercial-grade optical transceivers are backed by a comprehensive 1-3 years of hardware warranty. By admin on 2025-12-06

Customer Reviews
Write a Review

{{stardata.star}}

{{comment.count}} reviews
5 Stars

{{comment.star5}}%

4 Stars

{{comment.star4}}%

3 Stars

{{comment.star3}}%

2 Stars

{{comment.star2}}%

1 Star

{{comment.star1}}%

All Reviews ({{comment.star_num?comment.star_num:comment.count}})

All Reviews

5 stars only

4 stars only

3 stars only

2 stars only

1 star only
Reviews with Pictures ( {{comment.pic_comment}} )
See All Reviews

No data

G***n

France

Verified Purchase

4 .0

2026-03-22

Had a minor delay getting our customs clearance paperwork processed for Europe, but your sale team sorted it out. The SFP modules themselves are top-tier and fully compatible.

22 Helpful vote Comments

M***h

Spain

Verified Purchase

5 .0

2026-03-01

Our campus network features several 12-17km single-mode fiber runs connecting peripheral security checkpoints back to the core. These 1310nm 20km SFP transceivers are perfect for this exact distance window. The PIN receiver handles the signal beautifully without requiring inline optical attenuators, yet there's enough margin to survive minor macrobends in the fiber path. For any network engineer putting together a low-bandwidth, long-distance link, this module is an incredibly dependable asset.

104 Helpful vote Comments

B***y

France

Verified Purchase

5 .0

2026-02-18

We buy these in bulk for rural broadband access nodes. The 20km transmission distance gives us plenty of optical budget headroom over standard single-mode fiber. Will order again.

32 Helpful vote Comments

J***g

Australia

Verified Purchase

5 .0

2026-02-09

If you are managing a large-scale municipal network deployment, these are a no-brainer. Much more cost-effective than buying branded original modules, and the spec sheets are fully compliant.

39 Helpful vote Comments

O***h

United States

Verified Purchase

4 .0

2026-01-19

FedEx took their time delivering to our data center in Texas, but the product itself is top-tier. These commercial 0-70°C SFP modules run incredibly stable under heavy traffic loads.

28 Helpful vote Comments

E***h

United Kingdom

Verified Purchase

5 .0

2026-01-03

Solid 155M modules. Dropped 20 of these into our legacy campus switch stack and they linked up instantly. No fuss.

113 Helpful vote Comments

H***g

Brazil

Verified Purchase

5 .0

2025-12-27

It's getting harder to find quality commercial-grade 155M SFP optical modules that don't throw error codes. LINK-PP nailed the firmware on these. Running cool at 32°C in our central rack.

41 Helpful vote Comments

P***n

Sweden

Verified Purchase

5 .0

2025-12-14

Best budget Fast Ethernet SFP module. Exactly what we needed for our perimeter IP camera backhaul.

43 Helpful vote Comments

D***n

Japan

Verified Purchase

5 .0

2025-11-29

Bought a 100-pack for an enterprise building-to-building fiber patch project. Excellent build quality on the duplex LC interface. Latency is non-existent.

25 Helpful vote Comments

L***n

India

Verified Purchase

4 .0

2025-11-11

The transceivers perform flawlessly on our single-mode fiber runs, but the printed model numbers on the stickers are tiny and hard to read in dim rack lighting. Packaged safely though.

18 Helpful vote Comments

A***r

United States

Verified Purchase

5 .0

2025-10-28

Always a bit skeptical trying new optical transceivers on older enterprise gear, but these LS-SM3101-20C 155M SFP modules are fantastic. Working flawlessly alongside some OEM hardware in our server room.

65 Helpful vote Comments

I***n

Canada

Verified Purchase

5 .0

2025-10-04

Finding reliable 155M SFP modules with accurate Digital Optical Monitoring for legacy STM-1/OC-3 transport links can be a headache. These modules have completely stabilized our telco backhaul loops. The receiver sensitivity is excellent, easily managing the attenuation on our older 15km single-mode fiber lines. We've seen a noticeable drop in interface flapping since swapping out our old degraded optics for these fresh LINK-PP units. Absolute lifesaver for maintaining older telecom infrastructure.

95 Helpful vote Comments

N***s

Netherlands

Verified Purchase

5 .0

2025-09-26

Hooked these up to a 16km single-mode run. The 1310nm FP laser provides a really clean transmit signal, and the PIN receiver handles the incoming light beautifully. No bit errors at all.

37 Helpful vote Comments

F***y

Italy

Verified Purchase

5 .0

2025-09-15

Our facility uses a hybrid of heavy industrial automation and standard commercial IT server racks. We used these SFP 155M 1310nm 20km modules to link our main server room to edge media converters near the factory floor. Even though these are rated for standard commercial operating temperatures (0°C to 70°C), they are running remarkably cool inside our climate-controlled distribution frames. The duplex LC connectors click in securely, resisting ambient machine vibrations. Outstanding performance for critical plant monitoring.

106 Helpful vote Comments

K***t

United States

Verified Purchase

5 .0

2025-08-30

Zero issues. The DOM metrics on these 1310nm SFP modules match our fluke testers perfectly. Fast shipping to Chicago!

27 Helpful vote Comments

C***n

Germany

Verified Purchase

5 .0

2025-08-07

We recently overhauled a city-wide surveillance network requiring over 120 legacy Fast Ethernet fiber links across various nodes. We standardized on the LINK-PP LS-SM3101-20C 155M SFP module due to its strict compliance with the SFP MSA. Operating over 9-micron single-mode fiber, the 1310nm wavelength holds a stable optical budget even through multiple patch panels. The integrated DOM telemetry is a massive plus for our field techs, allowing us to monitor Tx/Rx power levels, temperature, and supply voltage remotely via SNMP. Excellent product for long-range infrastructure.

129 Helpful vote Comments