Is it suitable for legacy SONET or Fast Ethernet equipment?

Yes. The datasheet specifically lists 155Mbps optical systems, Fast Ethernet, and SONET OC-3 among the applications. It uses a hot-pluggable SFP footprint and complies with the SFP MSA and SFF-8472.

Can this SFP really support an 80km fiber link at 155Mbps?

Yes. The LS-SM5501-80I is specified for up to 155Mbps operation and up to 80km transmission over single-mode fiber. It uses a 1550nm DFB laser transmitter and a PIN photodiode receiver. Actual link performance depends on the installed fiber and optical loss budget.

Can I use this module for a remote outdoor communications cabinet?

Yes, provided the system requirements match the module specifications. The industrial version is rated for -40 to +85°C operating case temperature and supports up to 80km over SMF at 155Mbps, making it suitable for long-distance optical links in wider-temperature environments.

What makes the LS-SM5501-80I different from a standard-temperature SFP?

This is the industrial version, with an operating case temperature of -40 to +85°C. The datasheet also lists 0 to +70°C for the standard version. This makes the industrial model more suitable for outdoor cabinets, remote sites, and other environments with wider temperature variation.

Does it support DOM and what fiber connector does it use?

Yes. It supports Real-Time Digital Diagnostic Monitoring and SFF-8472 digital diagnostics. The optical interface is a Duplex LC receptacle, and the module is designed for SMF transmission.

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LINK-PP LS-SM5501-80I 155M SFP 1550nm 80km DOM Duplex LC SMF Optical Transceiver Module (Industrial)

Name: LINK-PP LS-SM5501-80I 155M SFP 1550nm 80km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 183331
Price: 18.748 USD
Availability: InStock
Rating: 5 (25 reviews)

# 183331

Product: LINK-PP LS-SM5501-80I 155M SFP 1550nm 80km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
SKU: 183331
P/N: LS-SM5501-80I
Price: $ 21.8
Stock: 450 in Stock
Sold: 550
Product URL: https://www.l-p.com/products/478313.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-SM5501-80I 155M SFP Specifications

The LINK-PP LS-SM5501-80I 155M SFP transceiver module uses a 1550 nm wavelength and transmits data at 155 Mbps over single-mode fiber (SMF) for distances of up to 80 km. It is designed for stable, long-distance transmission even in demanding industrial settings.

LINK-PP Part Number	LS-SM5501-80I	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	1550nm	Max Cable Distance	80km
Connector	Duplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-14 to -8dBm	RX Power	-32 to -6dBm
Receiver Sensitivity	< -32dBm	DDM/DOM	yes
Operating Temperature Range	-40 to 85°C	Protocols	GR-468, MSA Compliant

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Q: Is it suitable for legacy SONET or Fast Ethernet equipment? By G***s on 2026-04-22

A: Yes. The datasheet specifically lists 155Mbps optical systems, Fast Ethernet, and SONET OC-3 among the applications. It uses a hot-pluggable SFP footprint and complies with the SFP MSA and SFF-8472. By admin on 2026-04-22
Q: Can this SFP really support an 80km fiber link at 155Mbps? By S***l on 2025-12-12

A: Yes. The LS-SM5501-80I is specified for up to 155Mbps operation and up to 80km transmission over single-mode fiber. It uses a 1550nm DFB laser transmitter and a PIN photodiode receiver. Actual link performance depends on the installed fiber and optical loss budget. By admin on 2025-12-13
Q: Can I use this module for a remote outdoor communications cabinet? By O***z on 2025-08-24

A: Yes, provided the system requirements match the module specifications. The industrial version is rated for -40 to +85°C operating case temperature and supports up to 80km over SMF at 155Mbps, making it suitable for long-distance optical links in wider-temperature environments. By admin on 2025-08-25
Q: What makes the LS-SM5501-80I different from a standard-temperature SFP? By C***g on 2025-04-15

A: This is the industrial version, with an operating case temperature of -40 to +85°C. The datasheet also lists 0 to +70°C for the standard version. This makes the industrial model more suitable for outdoor cabinets, remote sites, and other environments with wider temperature variation. By admin on 2025-04-15
Q: Does it support DOM and what fiber connector does it use? By B***s on 2024-03-19

A: Yes. It supports Real-Time Digital Diagnostic Monitoring and SFF-8472 digital diagnostics. The optical interface is a Duplex LC receptacle, and the module is designed for SMF transmission. By admin on 2024-03-19

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T***s

Mexico

Verified Purchase

5 .0

2026-06-11

We needed a 155Mbps optical transceiver for a remote communications link, not a modern high-speed Ethernet upgrade. This module matched the application well and gave us the 1550nm long-distance fiber connectivity we were looking for at a reasonable cost.

43 Helpful vote Comments

S***h

Poland

Verified Purchase

5 .0

2026-05-28

Solid long-reach optic.

94 Helpful vote Comments

H***l

Mexico

Verified Purchase

5 .0

2026-04-14

Great for legacy links.

23 Helpful vote Comments

V***h

Republic of Korea

Verified Purchase

5 .0

2026-03-12

Works as expected :)

69 Helpful vote Comments

N***s

Sweden

Verified Purchase

5 .0

2026-01-12

Good fit for industrial network maintenance. We tested the module on our existing SMF route before production and confirmed the optical link was stable. The industrial temperature rating gives us additional confidence for equipment installed outside a climate-controlled room.

23 Helpful vote Comments

N***s

Taiwan, Province of China

Verified Purchase

5 .0

2026-01-01

80km reach is exactly what we needed.

44 Helpful vote Comments

M***t

Belarus

Verified Purchase

5 .0

2025-11-19

We used this industrial SFP in an outdoor cabinet for a remote network segment. The -40 to +85°C operating range was a key requirement, and the module also provides real-time digital diagnostic monitoring for easier remote maintenance.

48 Helpful vote Comments

J***y

Spain

Verified Purchase

5 .0

2025-10-25

The 80km reach is the main advantage for our deployment. We have a long single-mode fiber route between remote facilities, and this 1550nm SFP gives us enough optical reach without changing the existing SFP-based equipment. =D

27 Helpful vote Comments

B***k

Germany

Verified Purchase

5 .0

2025-09-02

Good replacement for our legacy SONET OC-3 equipment. The 1550nm DFB transmitter and PIN photodiode receiver worked well with our existing single-mode fiber and Duplex LC patching. No need to redesign the optical infrastructure.

65 Helpful vote Comments

S***k

Philippines

Verified Purchase

5 .0

2025-08-26

The module was a good match for our existing 155Mbps optical equipment. We checked the fiber path, connector condition, and optical readings during commissioning, and the link came up without any issues. A straightforward replacement for older long-reach optics.

100 Helpful vote Comments

S***s

Maldives

Verified Purchase

5 .0

2025-05-18

This 155Mbps SFP was a good fit for an older optical system we are maintaining. We tested the link over single-mode fiber and confirmed stable communication. DOM readings are also useful for our technicians during routine maintenance.

29 Helpful vote Comments

C***s

Singapore

Verified Purchase

5 .0

2025-04-11

Very practical for legacy Fast Ethernet infrastructure. We needed a long-distance 1550nm optical module with Duplex LC and SMF support, and this one matched the requirements without introducing unnecessary complexity.

18 Helpful vote Comments

G***l

New Zealand

Verified Purchase

4 .0

2025-03-12

The module itself worked properly and passed our link test. I only had a minor packaging issue on delivery, so I took one star off. The 1550nm 80km optical performance and industrial temperature specification were otherwise a good fit for our application.

33 Helpful vote Comments

H***e

Brunei Darussalam

Verified Purchase

5 .0

2025-02-12

Simple install, stable link. :D

18 Helpful vote Comments

R***s

Hong Kong

Verified Purchase

5 .0

2025-02-09

We used these for a long-distance fiber connection between two network cabinets. The 1550nm wavelength, Duplex LC interface, and 80km SMF reach matched our existing fiber infrastructure, so deployment was very straightforward.

27 Helpful vote Comments

E***n

Hong Kong

Verified Purchase

5 .0

2024-12-16

We deployed several units on a campus fiber network with long runs between buildings. The 80km SMF specification gives us plenty of reach, while the standard SFP footprint makes field replacement quick. :)

79 Helpful vote Comments

A***z

Bangladesh

Verified Purchase

5 .0

2024-12-15

We tested several units as part of a multi-platform compatibility check. The standard SFP interface and SFP MSA compliance made the physical integration easy. We also verified the 155Mbps link performance over our existing single-mode fiber before deployment.

30 Helpful vote Comments

L***n

United States

Verified Purchase

5 .0

2024-08-30

We installed these in several indoor and outdoor network cabinets during a maintenance project. The 1550nm DFB laser, PIN photodiode, and 80km SMF specification fit our optical requirements. The Duplex LC connection also made the physical installation quick.

72 Helpful vote Comments

C***l

Denmark

Verified Purchase

5 .0

2024-08-14

Good value for a specialized 155Mbps long-reach application. We did not need 1G or 10G bandwidth, so using this 155M SFP allowed us to maintain the existing network design while replacing aging optical hardware.

28 Helpful vote Comments

C***n

Australia

Verified Purchase

5 .0

2024-07-05

We selected the industrial version for an outdoor communications cabinet where the temperature range can be much wider than a normal equipment room. The -40 to +85°C operating range was an important reason for choosing this model.

56 Helpful vote Comments

J***t

New Zealand

Verified Purchase

5 .0

2024-06-14

The DOM feature is very useful for our operations team. We can check temperature and optical parameters from the host system when troubleshooting a remote link instead of immediately sending a technician to the cabinet.

5 Helpful vote Comments

B***e

Russian Federation

Verified Purchase

5 .0

2024-06-03

Good industrial SFP.

23 Helpful vote Comments

E***g

Taiwan, Province of China

Verified Purchase

5 .0

2024-04-15

This worked nicely for a remote fiber connection where temperature conditions were outside the range we would normally accept for a standard-temperature SFP. The industrial -40 to +85°C specification was important for our outdoor enclosure. ;)

82 Helpful vote Comments

G***a

Germany

Verified Purchase

5 .0

2024-03-29

We purchased these for a batch replacement project involving older 155Mbps optical equipment. The SFP MSA and SFF-8472 support made the module familiar to work with, and the Duplex LC connector matched our existing patch panels.

10 Helpful vote Comments

Z***s

Philippines

Verified Purchase

5 .0

2024-03-14

We use this type of module for long-distance optical links where reliability and environmental tolerance matter more than high bandwidth. The industrial temperature range and real-time diagnostics are useful features for remote infrastructure that is not always easy to access.

2 Helpful vote Comments