What is the operating temperature range for the LS-SM3125E-10E transceiver module?

It is built for demanding environments, safely operating within an extended industrial temperature range of -20°C to +85°C.

What makes this module "dual-rate"?

It can dynamically toggle between 10Gbps and 25Gbps data lines. This lets you deploy it in your legacy 10G setup today and effortlessly step up to 25G tomorrow with a simple configuration adjustment.

Does the LS-SM3125E-10E SFP28 module support loopback functions for troubleshooting?

Yes, it supports both optical and electrical loopback functions to simplify system diagnostics and link verification.

What happens if I attempt to transmit over distances exceeding 10km?

Pushing the link past 10km causes optical signal attenuation that will trigger bit errors, packet loss, or a total dropped link. Always stay within the 10km link budget footprint.

What specific laser safety classification does the 1310nm optical transmitter inside this SFP28 assembly fall under?

The module integrates a fully enclosed, eye-safe Class 1 laser engine compliant with international IEC 60825-1 safety regulations.

Under continuous 25Gbps line-rate load testing, what is the typical heat dissipation profile per module inside a crowded 48-port switch?

Every module is optimized to draw under 1.2W, which minimizes localized thermal stress and prevents port-throttling even when the switch cage is fully loaded.

If our fiber link drops to 10G due to an older switch configuration on one end, will the DOM monitoring telemetry still report data accurately?

Yes, the internal diagnostic controller functions independently of the port speed and tracks all critical Tx/Rx power and temperature levels at both 10G and 25G rates.

How does the built-in DDM/DOM monitor laser degradation over years of continuous campus deployment?

The real-time DOM tracks laser bias current fluctuations and Tx/Rx power trends, feeding data directly to your SNMP stack for predictive failure analysis.

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LINK-PP LS-SM3125E-10E 10/25G SFP28 Dual-Rate 1310nm 10km Duplex LC/UPC DOM SMF Optical Transceiver Module

Name: LINK-PP LS-SM3125E-10E 10/25G SFP28 Dual-Rate 1310nm 10km Duplex LC/UPC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 183262
Price: 35.26 USD
Availability: InStock
Rating: 4.9 (33 reviews)

# 183262

Product: LINK-PP LS-SM3125E-10E 10/25G SFP28 Dual-Rate 1310nm 10km Duplex LC/UPC DOM SMF Optical Transceiver Module
SKU: 183262
P/N: LS-SM3125E-10E
Price: $ 41
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Product URL: https://www.l-p.com/products/478243.htm

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Compatible P/N:: LS-SM3125-02C | 2km; LS-SM3125-02I | 2km; LS-SM3125-10C | 10km; LS-SM3125-10I | 10km; LS-SM3125E-10C | 10km; LS-SM3125E-10E | 10km; LS-SM3125E-10I | 10km; LS-SM3125-20C | 20km; LS-SM3125-20I | 20km; LS-SM3125-30C | 30km; LS-SM3125-30I | 30km; LS-SM3125-40C | 40km; LS-SM3125-40I | 40km

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LINK-PP LS-SM3125E-10E 10/25G SFP28 Specifications

LS-SM3125E-10E is a next-generation 10/25G SFP28 dual-rate optical transceiver module that delivers reliable duplex LC/UPC connectivity over single-mode fiber (SMF), engineered to transmit data seamlessly at a 1310nm wavelength up to a 10km distance with an ultra-efficient maximum power consumption of just 1.2W while incorporating digital diagnostic functions.

LINK-PP Part Number	LS-SM3125E-10E	Vendor Name	LINK-PP
Form Factor	SFP28	Max Data Rate	25.78Gbps
Wavelength	1310nm	Max Cable Distance	10km
Connector	Duplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-8 to +3dBm	RX Power	-14 to +3dBm
Receiver Sensitivity	＜-13dBm	Receiver Overload	2dBm
Operating Temperature Range	-20 to 85°C	Protocols	SFF-8472, SFF-8024, SFF-8431, SFF-8432, CEI-28G-VSR

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Q: What specific laser safety classification does the 1310nm optical transmitter inside this SFP28 assembly fall under? By V***h on 2026-02-18

A: The module integrates a fully enclosed, eye-safe Class 1 laser engine compliant with international IEC 60825-1 safety regulations. By admin on 2026-02-19
Q: Under continuous 25Gbps line-rate load testing, what is the typical heat dissipation profile per module inside a crowded 48-port switch? By E***n on 2025-10-01

A: Every module is optimized to draw under 1.2W, which minimizes localized thermal stress and prevents port-throttling even when the switch cage is fully loaded. By admin on 2025-10-02
Q: If our fiber link drops to 10G due to an older switch configuration on one end, will the DOM monitoring telemetry still report data accurately? By F***n on 2025-06-22

A: Yes, the internal diagnostic controller functions independently of the port speed and tracks all critical Tx/Rx power and temperature levels at both 10G and 25G rates. By admin on 2025-06-23
Q: How does the built-in DDM/DOM monitor laser degradation over years of continuous campus deployment? By N***y on 2025-04-26

A: The real-time DOM tracks laser bias current fluctuations and Tx/Rx power trends, feeding data directly to your SNMP stack for predictive failure analysis. By admin on 2025-04-27

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E***n

United Kingdom

Verified Purchase

5 .0

2026-04-10

Finding a reliable 10G/25G dual-rate transceiver wholesale source in the UK that balances strict technical parameter compliance with fair pricing is tough. These SFP28 modules have saved our institutional network upgrade project budget. We are running them on single-mode fiber links interconnecting separate departmental buildings over an 8km span. The 1310nm DFB laser punches right through the patch panel connections without any noticeable signal degradation. Having true hardware-level dual-rate auto-negotiation capabilities means our legacy 10G switches talk perfectly to our brand new 25G core switches. Excellent stability and zero packet jitter detected during peak traffic hours. (^_^)

108 Helpful vote Comments

A***e

Russian Federation

Verified Purchase

5 .0

2026-03-29

We swapped out our older single-rate optics for these dual-rate 1310nm SMF transceivers to future-proof our core rings. The seamless fallback to 10G avoids immediate expensive hardware swap-outs while letting us scale up seamlessly. Very cost-effective.

24 Helpful vote Comments

T***u

Belgium

Verified Purchase

5 .0

2026-02-17

Duplex LC/UPC standard fitting is tight and robust. No complaints at all!

14 Helpful vote Comments

X***g

Norway

Verified Purchase

5 .0

2026-01-25

We operate a high-density regional telecom ring and needed 1310nm 10km SFP28 DOM multi-vendor compatible transceivers. These hit the exact sweet spot between low latency and budget protection. The digital monitoring data helps us track fiber health over long distances dynamically. Just perfect!

35 Helpful vote Comments

R***y

Spain

Verified Purchase

5 .0

2025-12-27

Solid 10km single-mode link established over old fiber runs. Zero errors.

25 Helpful vote Comments

H***e

India

Verified Purchase

4 .0

2025-12-08

These 1310nm single-mode modules operate with high precision, and the multi-vendor EEPROM code works as advertised in our edge switches. One minor detail: the plastic dust caps on the duplex LC interface were a bit loose on a couple of units inside the packaging. No dust entered the optics, and they cleaned out fine before installation, but tighter dust caps would offer better peace of mind. Still a very solid buy.

17 Helpful vote Comments

D***n

Mexico

Verified Purchase

5 .0

2025-11-12

We recently executed a large-scale top-of-rack leaf-spine network expansion, deploying nearly 300 units of these 10/25G SFP28 dual-rate optical modules. EEPROM coding was completely compliant with our networking hardware. We did not encounter a single initialization error or unrecognized port failure during the entire turn-up phase. The live DOM tracking is seamlessly exposed through standard CLI commands, providing valuable Tx/Rx bias currents and real-time power metrics. LINK-PP has delivered an outstanding balance of affordability and carrier-grade consistency.

135 Helpful vote Comments

W***e

United Kingdom

Verified Purchase

5 .0

2025-10-26

We deploy these regularly for 25G base station backhaul module UK setups. They hold up surprisingly well against extreme temperature shifts inside unconditioned roadside enclosures. The duplex LC/UPC connector clicks in clean and keeps dust sealed out. Will keep buying!

43 Helpful vote Comments

Z***r

Netherlands

Verified Purchase

5 .0

2025-09-14

Clean eye diagrams on our scope when running these at 25G. The Duplex LC patch cables plug in firmly with zero wobble. Very low power consumption per module, which keeps our rack temperatures predictable under heavy loads. Excellent enterprise hardware.

61 Helpful vote Comments

U***n

Denmark

Verified Purchase

5 .0

2025-08-03

Using these for a campus fiber network deployment over a 7km single-mode run. The 1310nm optics are incredibly stable, and the dual-rate flexibility means we can run them at 10G today and flip the port config to 25G next year when the core upgrade goes live. Solid investment!

27 Helpful vote Comments

G***s

Brazil

Verified Purchase

4 .0

2025-07-22

Solid dual-rate optical transceiver option for enterprise data centers. We ran an automated script to parse the DOM data across a batch of 40 modules, and all metrics are highly accurate. One minor annoyance: the pull-tab release mechanism felt a bit stiff on two of the units when we tried to unlatch them from a high-density 48-port switch cage. A little careful leverage solved it, and the link works perfectly. Good price-to-performance ratio.

24 Helpful vote Comments

P***l

Italy

Verified Purchase

5 .0

2025-07-09

Best budget 1310nm 10km SFP28 optical modules I've tested this year. Highly recommended.

17 Helpful vote Comments

C***e

Republic of Korea

Verified Purchase

5 .0

2025-06-08

Our field engineering crew deployed these dual-rate 10/25G transceivers across 15 distinct cellular base station backhaul links in outdoor cabinets. The dual-rate flexibility is critical for our migration pipeline, allowing backward compatibility with older 10G eCPRI interfaces while remaining fully ready for 25G upgrades via remote software configuration. The duplex LC/UPC interface fits tightly with high-grade optical patch cables, maintaining minimal insertion loss. Over three months of field operations including heavy summer daytime heat waves, the DOM alerts remained clear, with internal module temperatures well within safe operational limits. A superb product for mission-critical network backbones.

122 Helpful vote Comments

V***l

Finland

Verified Purchase

5 .0

2025-05-29

If you're looking for high-quality 10/25G SFP28 optical transceivers in Europe, don't sleep on these. Hooked them up between a custom storage server and our main aggregation switch for a high-speed home laboratory/small enterprise NAS setup. Optical monitoring metrics look excellent. ✨

50 Helpful vote Comments

Y***y

Sweden

Verified Purchase

5 .0

2025-04-07

Great modules for server-to-switch interconnects. Found these via a search for dual-rate optical transceiver distributors. They handle standard IEEE protocols with zero frame drops during heavy line-rate 25GbE load testing. Definitely buying bulk next time around. (・∀・)

58 Helpful vote Comments

S***e

Austria

Verified Purchase

5 .0

2025-03-26

Excellent dual-rate 10/25G SFP28 optical modules for our enterprise upgrade.

11 Helpful vote Comments

B***k

Turkey

Verified Purchase

5 .0

2025-02-21

Perfect compatibility, robust casing, and true 10km reach. Exactly what you expect from industrial-grade networking gear. The shipping was incredibly secure, with individual anti-static packaging for every single SFP28 transceiver. Outstanding work.

57 Helpful vote Comments

F***h

Norway

Verified Purchase

5 .0

2025-01-30

We utilize these 1310nm 10km single-mode transceivers to build links between indoor baseband processing units and outdoor tower-mounted remote radio heads. The dual-rate capability is perfect for matching up with changing mobile fronthaul/backhaul bandwidth profiles. The duplex LC/UPC interface fits tightly to the fiber patch cord, and the standard single-mode optics minimize link attenuation over long vertical tower cable runs. Real-time DOM telemetry monitoring has shown zero drift in optical laser bias or receiver performance across several weeks of fluctuating northern European coastal climate conditions.

101 Helpful vote Comments

O***l

Poland

Verified Purchase

5 .0

2025-01-09

Flawless 10/25G dual-rate performance in our campus core switches, plug & play!

39 Helpful vote Comments

W***n

Singapore

Verified Purchase

5 .0

2024-09-16

Every time, the LINK-PP was very knowledgeable and interested in our business. The Optical Transceiver Module arrive on time and have been in production with no issues,Highly recommend this reliable website.

21 Helpful vote Comments

U***o

Denmark

Verified Purchase

5 .0

2024-09-13

Provided exactly what they advertised...truth in sales.

21 Helpful vote Comments

R***n

Spain

Verified Purchase

5 .0

2024-03-20

The usual excellent service from this vendor.

42 Helpful vote Comments

R***g

Cambodia

Verified Purchase

5 .0

2024-02-20

Great prices. Great Service.

62 Helpful vote Comments

P***f

United States

Verified Purchase

5 .0

2023-10-24

This is very good product. It was delivered earlier than promised.

19 Helpful vote Comments

M***n

Turkey

Verified Purchase

5 .0

2023-10-13

Your guys offered a great range of products at competitive prices with Fast delivery. Happy~

11 Helpful vote Comments

E***E

United States

Verified Purchase

5 .0

2023-08-23

Buy the sfp+ Cages from several vendors, Link-pp is the best, highly compatible.

83 Helpful vote Comments

M***i

Japan

Verified Purchase

5 .0

2023-05-12

Package arrived on time, and the Optical Transceiver Module work perfectly.

21 Helpful vote Comments

L***s

Morocco

Verified Purchase

5 .0

2023-05-08

What a low price received on this product.

12 Helpful vote Comments

N***e

Mexico

Verified Purchase

5 .0

2023-03-10

Working as expected!

14 Helpful vote Comments

B***g

United States

Verified Purchase

5 .0

2023-03-07

We planned to buy 100pcs 10/25/40G Transceiver Modules ,compatibility is the biggest key factors. These Optical Transceiver Modules could meet our needs and also reach we required.

46 Helpful vote Comments

J***m

Mexico

Verified Purchase

5 .0

2023-02-21

No issues. Everything arrived on time as advertised.

39 Helpful vote Comments

P***f

Mexico

Verified Purchase

5 .0