Is the 1550nm wavelength sensitive to macrobending losses if the fiber patch cords are tightly routed in high-density management trays?

Yes, 1550nm light is more vulnerable to bending losses than 1310nm, so you must maintain the standard minimum bend radius for your SMF cabling.

If our indoor server room suffers a cooling failure, what is the maximum safe storage/non-operational thermal limit for this module?

The transceiver can withstand non-operational ambient warehouse exposure ranging from -40°C up to +85°C without experiencing degradation of its internal optical components.

Can the built-in DDM track sudden environmental voltage drops that might threaten link stability in remote field offices?

Yes, the module constantly samples host supply voltage alongside optical metrics, flagging anomalies before physical link loss occurs.

Does the digital optical diagnostic interface require a separate polling frequency, or does it stream metrics continuously?

The DOM parameters are continuously updated on the transceiver's internal registry, allowing your network monitoring software to poll the physical data in real time.

Can this module successfully overcome an older 65km single-mode run that has multiple bad splices and high patch panel loss?

It depends on your total link budget; this module offers a robust power budget designed specifically to handle the attenuation of long-haul single-mode lines.

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LINK-PP LS-SM5501-80C 155M SFP 1550nm 80km Duplex LC DOM SMF Optical Transceiver Module

Name: LINK-PP LS-SM5501-80C 155M SFP 1550nm 80km Duplex LC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 181784
Price: 15.05 USD
Availability: InStock
Rating: 4.9 (36 reviews)

# 181784

Product: LINK-PP LS-SM5501-80C 155M SFP 1550nm 80km Duplex LC DOM SMF Optical Transceiver Module
SKU: 181784
P/N: LS-SM5501-80C
Price: $ 17.5
Stock: 2900 in Stock
Sold: 600
Product URL: https://www.l-p.com/products/476884.htm

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Manufacture: LINK-PP

P/N: LS-SM5501-80C

Compatible:: Cisco; LINK-PP; Avaya; Brocade; DELL; Extreme; H3C; HPE H3C; HW; Juniper

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-SM5501-80C 155M SFP Specifications

LS-SM5501-80C drives long-haul connectivity as a hot-pluggable, commercial-grade 155M SFP single-mode optical module that leverages a 1550nm wavelength to sustain robust Fibre Channel and Ethernet links across an impressive 80km span.

LINK-PP Part Number	LS-SM5501-80C	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	DOM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	GR-468, MSA Compliant

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Q: Is the 1550nm wavelength sensitive to macrobending losses if the fiber patch cords are tightly routed in high-density management trays? By I***k on 2026-03-01

A: Yes, 1550nm light is more vulnerable to bending losses than 1310nm, so you must maintain the standard minimum bend radius for your SMF cabling. By admin on 2026-03-02
Q: If our indoor server room suffers a cooling failure, what is the maximum safe storage/non-operational thermal limit for this module? By L***n on 2026-01-29

A: The transceiver can withstand non-operational ambient warehouse exposure ranging from -40°C up to +85°C without experiencing degradation of its internal optical components. By admin on 2026-01-30
Q: Can the built-in DDM track sudden environmental voltage drops that might threaten link stability in remote field offices? By H***e on 2025-12-09

A: Yes, the module constantly samples host supply voltage alongside optical metrics, flagging anomalies before physical link loss occurs. By admin on 2025-12-10
Q: Does the digital optical diagnostic interface require a separate polling frequency, or does it stream metrics continuously? By K***e on 2025-11-11

A: The DOM parameters are continuously updated on the transceiver's internal registry, allowing your network monitoring software to poll the physical data in real time. By admin on 2025-11-12
Q: Can this module successfully overcome an older 65km single-mode run that has multiple bad splices and high patch panel loss? By J***k on 2025-08-25

A: It depends on your total link budget; this module offers a robust power budget designed specifically to handle the attenuation of long-haul single-mode lines. By admin on 2025-08-26

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A***e

Denmark

Verified Purchase

5 .0

2026-04-21

We deployed a batch of these LS-SM5501-80C SFP optical modules across our regional aggregation sites for legacy 155Mbps transport circuits. Optical spectrum analysis confirms the 1550nm laser line width is exceptionally clean, keeping modal dispersion minimal over long spans. The onboard Digital Optical Monitoring (DOM) aligns perfectly with our external optical power meter readings, providing dependable telemetry for RX/TX levels. The duplex LC housing locks securely into standard SFP ports without mechanical play. A very reliable choice for infrastructure teams managing legacy telecommunication frameworks.

137 Helpful vote Comments

V***n

Finland

Verified Purchase

5 .0

2026-03-20

Very cost-effective option for long-range point-to-point connections. 80km capability gives us plenty of safety margin for our 75km link. No frame loss detected during the 48-hour burn-in test.

48 Helpful vote Comments

S***e

Hungary

Verified Purchase

5 .0

2026-02-16

Straightforward deployment. The DOM interface provides precise measurements of transceiver temperature and supply voltage directly to our monitoring dashboard.

21 Helpful vote Comments

O***y

Israel

Verified Purchase

5 .0

2026-01-30

Solid choice for infrastructure contractors. We deployed these for a base station backhaul setup over single-mode fiber. The duplex LC interface fits firmly without loose connections.

60 Helpful vote Comments

D***h

Canada

Verified Purchase

5 .0

2026-01-04

Standard duplex LC clicks in perfectly, zero CRC errors on the port so far.

32 Helpful vote Comments

U***s

France

Verified Purchase

5 .0

2025-12-13

Solid 155M SFP for our long-haul legacy links, plugged in and worked instantly.

36 Helpful vote Comments

N***e

India

Verified Purchase

5 .0

2025-11-21

Our main objective was to link two remote pump stations using existing single-mode fiber infrastructure. These transceivers matched the required 155Mbps signaling rate perfectly. Firmware synchronization with our core enterprise switches worked right out of the box, avoiding any unverified transceiver blockages. Eye pattern captures during staging showed wide openings with clean jitter parameters. Operating temperatures in our indoor cabinets have leveled out at around 38°C, safe within the 0-70°C commercial specification.

152 Helpful vote Comments

Z***t

United States

Verified Purchase

4 .0

2025-10-02

Good commercial-grade SFP modules with clear DDM data. Delivery took a little longer than expected for our East Coast data center deployment.

28 Helpful vote Comments

C***d

Belarus

Verified Purchase

5 .0

2025-09-28

Tested the optical spectrum stability under continuous load. The 1550nm center wavelength remains steady with zero drift. Perfect fit for standard duplex LC patch cables.

45 Helpful vote Comments

R***y

Indonesia

Verified Purchase

5 .0

2025-09-08

Upgrading our legacy edge routing nodes required a very specific transceiver configuration—155M speed, 1550nm wavelength, and duplex LC connector on SMF. These modules met every parameter perfectly. The built-in DDM/DOM functions provide immediate visibility into transceiver supply voltage and optical power parameters via our standard SNMP monitoring tools. Physical fit is excellent; the bale clasp mechanism feels sturdy and allows for clean extraction during maintenance routines.

114 Helpful vote Comments

M***s

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-08-11

Replaced some aging optics in our metro backhaul line with these LS-SM5501-80C 155M SFP modules. The 1550nm laser maintains great signal stability over a 68km span. Tracking metrics via DOM shows normal thresholds.

26 Helpful vote Comments

B***p

Germany

Verified Purchase

5 .0

2025-07-21

Decentralized campus nodes are now connected via these 80km SFP modules. The receiving sensitivity is quite impressive even with a few patch panels in between.

25 Helpful vote Comments

T***r

Canada

Verified Purchase

5 .0

2025-06-07

Decent 155M single-mode SFP transceivers for long-distance transport. We are utilizing them for low-bandwidth utility signaling lines across towns. Links have been up without a single flap.

108 Helpful vote Comments

W***r

Spain

Verified Purchase

5 .0

2025-05-15

Stable 1550nm wavelength emission, attenuation margins are well within limits.

10 Helpful vote Comments

P***n

Ireland

Verified Purchase

4 .0

2025-03-27

The 80km optical link is stable and running clean. The physical latch on one module was stiff during unboxing, but it functioned correctly once inserted into the port.

24 Helpful vote Comments

E***n

Brazil

Verified Purchase

5 .0

2025-02-28

Excellent value for 80km single-mode fiber links, ordering another batch soon.

41 Helpful vote Comments

H***r

United States

Verified Purchase

5 .0

2024-04-17

I have used the Chat process with other companies. I can't say enough good things about LINK-PP and their interactions with customers! Simply one of the best I have encountered!! A company with great service!

26 Helpful vote Comments

L***s

Finland

Verified Purchase

5 .0

2024-04-07

Link-pp was based on their product quality, coupled with good service and price, which won the praise of our company.

44 Helpful vote Comments

L***n

United States

Verified Purchase

5 .0

2024-03-29

Never had a problem with this company. Online chat is good, ordering is easy, prices are great.

39 Helpful vote Comments

S***o

Brazil

Verified Purchase

5 .0

2024-03-11

This website is great and easy to use!

35 Helpful vote Comments

s***h

Iran, Islamic Republic of

Verified Purchase

5 .0

2024-02-19

Wanted some stuff at reasonable price. Order immediately processed. Very pleased with price.

39 Helpful vote Comments

D***o

Hong Kong

Verified Purchase

5 .0

2024-02-16

The 10/25/40G Transceiver Modules are cheap, but quality, packages are all good. Cost effective.

34 Helpful vote Comments

I***e

United States

Verified Purchase

5 .0

2024-02-01

Worked perfectly out of the box. Fast shipping.

88 Helpful vote Comments

L***i

Hong Kong

Verified Purchase

5 .0

2024-01-29

the site is really nice , i love how their costumer service treat us

85 Helpful vote Comments

B***n

Bulgaria

Verified Purchase

5 .0

2024-01-08

Worked fine in a DELL PoE switch.

18 Helpful vote Comments

R***a

Japan

Verified Purchase

5 .0

2023-09-04

Fast delivery, accurate order. Very pleased.

21 Helpful vote Comments

M***n

Romania

Verified Purchase

5 .0

2023-08-30

The shipping is Fast. I received the products within 10 days, amazing speed! The products were well packaged and worked fine during the past weeks. Glad to find LINK-PP, such a great website. Will definitly come back.

69 Helpful vote Comments

K***s

United States

Verified Purchase

5 .0

2023-07-18

fantastic! the part work perfectly and shipped extremely Fast!

146 Helpful vote Comments

V***d

Sweden

Verified Purchase

5 .0

2023-07-07

Great reviews by many professionals within the industry and well thought out shopping experience.

94 Helpful vote Comments

V***r

Ukraine

Verified Purchase

5 .0

2023-06-28

Extremely Fast to ship and super easy to order from the website, & speedy service. Thank you!

41 Helpful vote Comments

M***e

Macao

Verified Purchase

5 .0

2023-04-01

Have ordered from them many, many times. Never a problem!

139 Helpful vote Comments

C***s

United States

Verified Purchase

5 .0

2023-03-27

Without the help of Yoeng, I would not have purchased such great items without seeing them in person. She helped me make the right product choices and provided instruction that answered all of my questions, which really helps me a lot.You can rely on LINK-PP!

71 Helpful vote Comments

R***S

Indonesia

Verified Purchase

5 .0

2023-03-26

I'm very happy with my transaction and purchase. The Optical Transceiver Module works with no issue. I would definitely recommend this company for customer service and speed. I will be purchasing from them again in the future.

103 Helpful vote Comments

J***x

Maldives

Verified Purchase

5 .0

2023-03-12

With their wide variety of Optical Transceiver Modules and unbeatable prices, this is the first company I come to when in need of Optical Transceivers. Shipping is Fast and everything is well packaged.

124 Helpful vote Comments

V***r

United States

Verified Purchase

5 .0

2023-01-27

Quality products,Quality service,And Fast delivery highly recommend.

42 Helpful vote Comments

O***e

Canada

Verified Purchase

5 .0