Does this module work with standard SFP ports?

Yes. The LS-SM5501-A2C uses the standard SFP form factor and is designed for 155 Mbps optical connectivity. It supports SFP MSA and SFF-8472, making it suitable for compatible network equipment that supports this optical specification.

Does this module support DOM/DDM monitoring?

Yes. The module supports Real Time Digital Diagnostic Monitoring, and the product specification lists DOM support. It is also compliant with SFP MSA and SFF-8472 digital diagnostic functions.

Can this SFP really support a 120km link over single-mode fiber?

Yes. The LS-SM5501-A2C is specified for up to 120km over SMF at 155 Mbps. It uses a 1550nm DFB laser transmitter and PIN photodiode receiver, with receiver sensitivity specified at -34dBm.

What fiber and connector should we use with this 1550nm SFP?

It is designed for single-mode fiber (SMF) and uses a Duplex LC interface. For a 120km deployment, the complete optical link should be engineered according to the actual fiber loss, connectors, splices, and available optical power budget.

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LINK-PP LS-SM5501-A2C 155M SFP 1550nm 120km DOM Duplex LC SMF Optical Transceiver Module

Name: LINK-PP LS-SM5501-A2C 155M SFP 1550nm 120km DOM Duplex LC SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 183334
Price: 22.188 USD
Availability: InStock
Rating: 5 (21 reviews)

# 183334

Product: LINK-PP LS-SM5501-A2C 155M SFP 1550nm 120km DOM Duplex LC SMF Optical Transceiver Module
SKU: 183334
P/N: LS-SM5501-A2C
Price: $ 25.8
Stock: 410 in Stock
Sold: 980
Product URL: https://www.l-p.com/products/478316.htm

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Compatible:: LINK-PP

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

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LINK-PP LS-SM5501-A2C 155M SFP Specifications

The LINK-PP LS-SM5501-A2C 155M SFP transceiver is built for long-distance transmission, operating at 1550nm to deliver consistent 155 Mbps performance over single-mode fiber (SMF) up to 120km.

LINK-PP Part Number	LS-SM5501-A2C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	1550nm	Max Cable Distance	120km
Connector	Duplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
DOM Support	Yes	Receiver Sensitivity	< -34dBm
TX Power	-2 to +3dBm	RX Power	-34 to -6dBm
Operating Temperature Range	0 to 70°C	Protocols	GR-468, MSA Compliant

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Q: Does this module work with standard SFP ports? By Z***z on 2026-03-04

A: Yes. The LS-SM5501-A2C uses the standard SFP form factor and is designed for 155 Mbps optical connectivity. It supports SFP MSA and SFF-8472, making it suitable for compatible network equipment that supports this optical specification. By admin on 2026-03-04
Q: Does this module support DOM/DDM monitoring? By S***z on 2025-11-08

A: Yes. The module supports Real Time Digital Diagnostic Monitoring, and the product specification lists DOM support. It is also compliant with SFP MSA and SFF-8472 digital diagnostic functions. By admin on 2025-11-09
Q: Can this SFP really support a 120km link over single-mode fiber? By S***g on 2025-07-09

A: Yes. The LS-SM5501-A2C is specified for up to 120km over SMF at 155 Mbps. It uses a 1550nm DFB laser transmitter and PIN photodiode receiver, with receiver sensitivity specified at -34dBm. By admin on 2025-07-10
Q: What fiber and connector should we use with this 1550nm SFP? By J***l on 2024-03-12

A: It is designed for single-mode fiber (SMF) and uses a Duplex LC interface. For a 120km deployment, the complete optical link should be engineered according to the actual fiber loss, connectors, splices, and available optical power budget. By admin on 2024-03-13

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J***s

Canada

Verified Purchase

5 .0

2026-06-22

The 1550nm DFB laser and PIN receiver combination is a solid match for our long-distance optical application. We checked DOM readings during installation and found the module easy to monitor and troubleshoot.

11 Helpful vote Comments

B***r

Lithuania

Verified Purchase

5 .0

2026-03-18

Nice replacement option for older 155 Mbps equipment. We tested the modules across several compatible network platforms and the link came up cleanly. The Duplex LC connector and DOM support also made troubleshooting much easier.

37 Helpful vote Comments

S***s

Netherlands

Verified Purchase

5 .0

2026-02-09

Used the LS-SM5501-A2C for a 120km single-mode fiber connection between two network sites. The 1550nm DFB transmitter gave us the reach we needed, while DOM made it easier to monitor optical levels during commissioning.

29 Helpful vote Comments

A***s

Singapore

Verified Purchase

5 .0

2026-01-11

These worked well for our telecom access project. We needed a 155 Mbps optical transceiver with long SMF reach, and this module provided the 120km distance we were looking for without changing the existing fiber architecture.

75 Helpful vote Comments

R***k

Denmark

Verified Purchase

5 .0

2025-11-22

Reliable 155 Mbps optics for our legacy network. The modules passed our compatibility checks and worked well with the equipment listed in our deployment plan. DOM was especially helpful during acceptance testing.

49 Helpful vote Comments

J***n

Poland

Verified Purchase

5 .0

2025-10-12

We purchased a batch for remote network cabinets where the fiber runs are well beyond normal campus distances. The 1550nm wavelength and 120km SMF specification matched our design, and the modules have remained stable during continuous operation. :)

80 Helpful vote Comments

R***s

Morocco

Verified Purchase

5 .0

2025-10-05

For our remote access network, we needed 120km reach rather than another short-distance SFP. The LS-SM5501-A2C gave us the required 1550nm optical interface and worked smoothly during our multi-vendor compatibility testing.

80 Helpful vote Comments

B***r

Malaysia

Verified Purchase

5 .0

2025-06-18

Installed these in several outdoor network cabinets connected by long single-mode fiber. The standard 0 to 70°C operating range fits our indoor equipment locations, and the 155 Mbps link has been stable after deployment.

7 Helpful vote Comments

B***s

South Africa

Verified Purchase

5 .0

2025-06-08

Good value for a 120km SFP. DOM is useful for checking TX and RX levels during maintenance.

70 Helpful vote Comments

E***r

Mexico

Verified Purchase

5 .0

2025-04-11

Clean install and stable link.

1 Helpful vote Comments

M***s

Italy

Verified Purchase

5 .0

2025-03-01

Very good for long-distance SMF.

98 Helpful vote Comments

B***n

Belgium

Verified Purchase

5 .0

2024-12-05

Works exactly as expected in our 155 Mbps fiber link. The 1550nm optics and 120km SMF reach were a good fit for our remote site connection.

23 Helpful vote Comments

L***y

Hong Kong

Verified Purchase

5 .0

2024-12-02

We needed a cost-effective 1550nm SFP for a long fiber route between two facilities. This one fit the bill nicely. The Duplex LC interface was compatible with our existing cabling, and optical levels were easy to monitor through DOM.

20 Helpful vote Comments

J***l

Argentina

Verified Purchase

5 .0

2024-10-18

Good price and good performance. ;)

33 Helpful vote Comments

A***s

Canada

Verified Purchase

4 .0

2024-10-15

The modules arrived with slightly more packaging than expected and delivery took a little longer than planned. Once installed, though, the 155 Mbps links performed well and the 120km SMF specification matched our requirements.

83 Helpful vote Comments

Z***z

United Arab Emirates

Verified Purchase

5 .0

2024-09-06

We deployed these for a long-distance campus fiber link and had no issues. Duplex LC made the installation straightforward. =D

14 Helpful vote Comments

A***t

Indonesia

Verified Purchase

5 .0

2024-06-03

Excellent for our long-haul fiber project. The 120km reach gave us enough margin for the site-to-site connection, and the SFP MSA/SFF-8472 support made integration and DOM monitoring straightforward.

31 Helpful vote Comments

E***g

Sweden

Verified Purchase

5 .0

2024-05-14

We used these in a multi-site fiber rollout connecting remote cabinets back to the main facility. The 1550nm/120km specification was the main reason we selected them, and performance has been consistent so far. :-D

61 Helpful vote Comments

A***n

Brunei Darussalam

Verified Purchase

5 .0

2024-04-15

Easy to deploy in the rack. The SFP form factor is hot-pluggable, and DOM gives our team useful visibility into optical performance. We used Duplex LC SMF patching and had the link operational quickly.

61 Helpful vote Comments

S***s

Bulgaria

Verified Purchase

5 .0

2024-03-02

Good fit for long-haul legacy Ethernet and optical systems. The 155 Mbps rate is exactly what we needed, and the receiver sensitivity below -34dBm gives useful margin on our long fiber route.

37 Helpful vote Comments

N***r

Ukraine

Verified Purchase

5 .0

2024-01-22

Solid long-reach SFP :)

86 Helpful vote Comments