Can these modules withstand continuous vibration near railway tracks or heavy industrial machinery?

Yes, the rugged metal alloy casing and latching duplex LC mechanism prevent signal loss caused by physical mechanical vibration.

Will this 25G optics transceiver work on existing multi-mode fiber cabling already pulled in our building?

No, the LS-SM3125-30I is a single-mode SFP transceiver; running it over multi-mode fiber will cause severe optical attenuation and packet loss.

Can we use this 30km SFP28 transceiver for 25G backhaul on remote cell towers with unheated cabinets?

Yes, its industrial-grade rating (-40°C to +85°C) ensures stable laser output even in extreme outdoor weather.

Will high electromagnetic interference in power substations disrupt signal quality over this transceiver?

No, the fully enclosed metal shell provides superior EMI shielding against high-voltage electrical interference.

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FS SFP-25GERL-31-I Compatible LINK-PP 25G SFP28 1310nm 30km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)

Name: FS SFP-25GERL-31-I Compatible LINK-PP 25G SFP28 1310nm 30km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 218376
Price: 121.26 USD
Availability: InStock
Rating: 4.8 (11 reviews)

# 218376

Product: FS SFP-25GERL-31-I Compatible LINK-PP 25G SFP28 1310nm 30km Duplex LC/UPC DOM SMF Optical Transceiver Module (Industrial)
SKU: 218376
P/N: LS-SM3125-30I
Price: $ 141
Stock: 170 in Stock
Sold: 692
Product URL: https://www.l-p.com/products/494319.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

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11 Reviews

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Manufacture: LINK-PP

P/N: LS-SM3125-30I

Compatible:: Cisco; LINK-PP; Arista; Brocade; FS; Generic; Mellanox

Compatible P/N:: SFP-25GLRL-31-I | 2km; SFP-25GLR-31 | 10km; SFP-25GLR-31-I | 10km; SFP-25GMLR-31-I | 10km; SFP-25GERL-31 | 30km; SFP-25GERL-31-I | 30km; SFP-25GER-31 | 40km; SFP-25GER-31-I | 40km

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FS SFP-25GERL-31-I Compatible LINK-PP 25G SFP28 Specifications

FS SFP-25GERL-31-I Compatible LINK-PP module is an industrial-grade 25GBASE-ER SFP28 transceiver featuring a 1310nm EML laser and duplex LC/UPC interface, supporting up to 30km transmission over single-mode fiber with a defined optical power budget and tolerance to chromatic dispersion per ER specifications, alongside integrated DOM for real-time monitoring of Tx/Rx optical power and temperature.

FS Part Number	SFP-25GERL-31-I	Vendor Name	LINK-PP
Form Factor	SFP28	Max Data Rate	25.78Gbps
Wavelength	1310nm	Max Cable Distance	30km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	APD
Receiver Sensitivity	-19dBm	Operating Temperature range	-40°C to +85°C
Protocols	MSA Compliant, CPRI, eCPRI	Warranty	5 Years

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Q: Can these modules withstand continuous vibration near railway tracks or heavy industrial machinery? By J***r on 2026-03-01

A: Yes, the rugged metal alloy casing and latching duplex LC mechanism prevent signal loss caused by physical mechanical vibration. By admin on 2026-03-02
Q: Will this 25G optics transceiver work on existing multi-mode fiber cabling already pulled in our building? By E***s on 2026-01-26

A: No, the LS-SM3125-30I is a single-mode SFP transceiver; running it over multi-mode fiber will cause severe optical attenuation and packet loss. By admin on 2026-01-27
Q: Can we use this 30km SFP28 transceiver for 25G backhaul on remote cell towers with unheated cabinets? By M***e on 2025-11-13

A: Yes, its industrial-grade rating (-40°C to +85°C) ensures stable laser output even in extreme outdoor weather. By admin on 2025-11-14
Q: Will high electromagnetic interference in power substations disrupt signal quality over this transceiver? By S***d on 2025-04-17

A: No, the fully enclosed metal shell provides superior EMI shielding against high-voltage electrical interference. By admin on 2025-04-18

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M***z

Spain

Verified Purchase

5 .0

2026-05-11

Used these 25G 1310nm optical modules to connect our primary data center to a disaster recovery site 16 miles away. Latency is rock solid, and DDM monitoring integrates smoothly with our NMS dashboard via SNMP. Enterprise-grade performance at a fraction of standard vendor pricing!

68 Helpful vote Comments

J***e

Denmark

Verified Purchase

5 .0

2026-02-16

We conducted a comprehensive optical bench test on the LINK-PP LS-SM3125-30I transceiver before deploying 40 units across our municipal fiber network. Using an optical spectrum analyzer, we verified a steady 1310nm center wavelength powered by a precision EML laser and a high-sensitivity APD receiver, yielding an impressive power budget. On our 28km OS2 single-mode fiber span with multiple patch panels, the module established a rock-solid 25Gbps link on our core switches without throwing vendor alarms. DDM telemetry reported real-time Tx/Rx optical power with pinpoint accuracy compared to our inline power meter. Exceptional engineering for high-demand network deployments!

128 Helpful vote Comments

J***s

Japan

Verified Purchase

5 .0

2026-02-03

Runs cool and stable at 30km distance. Essential gear for our WISP tower setups!

68 Helpful vote Comments

L***s

Canada

Verified Purchase

5 .0

2026-01-22

We deployed 20 of these LINK-PP LS-SM3125-30I SFP28 transceivers for an inter-building fiber trunk over 22km. The EEPROM came properly pre-coded for our enterprise switches, and the link locked at 25Gbps immediately without needing to force port speeds. Very impressed with the hardware build quality!

91 Helpful vote Comments

K***e

Romania

Verified Purchase

4 .0

2026-01-21

The LS-SM3125-30I transceivers themselves are outstanding! Plugged into our 25G core switches and established a clean link over 22km immediately. Deducted one star only because shipping delayed delivery by two days due to weather, which pushed back our maintenance window slightly. Optic performance is 5/5!

36 Helpful vote Comments

D***n

Sweden

Verified Purchase

5 .0

2025-11-18

We manage tower setups in northern Sweden where winter temperatures drop below -30°C. These industrial-grade 25G 30km SFP28 modules handled the arctic cold effortlessly. Laser output power remained stable throughout freezing winter storms.

121 Helpful vote Comments

M***n

Germany

Verified Purchase

5 .0

2025-11-14

Passed all DOM checks immediately on our core switch. Fast shipping to Frankfurt!

49 Helpful vote Comments

C***z

Finland

Verified Purchase

4 .0

2025-11-01

Excellent 25G SFP28 1310nm optical modules. Tested over 28km of OS2 single-mode fiber with a perfect optical power budget. Docked one star because local customs clearance in Finland took 3 days longer than estimated. Customer support provided tracking updates quickly though. Stellar hardware!

29 Helpful vote Comments

R***s

Norway

Verified Purchase

5 .0

2025-10-07

Solid performance for campus aggregation switches. Tested compatibility across multiple switch platforms in our lab, and the DOM features work accurately. Will be adopting these as our standard 25G 30km SFP optics across all regional sites.

114 Helpful vote Comments

W***z

Australia

Verified Purchase

5 .0

2025-06-05

Outstanding 25GBASE-ER SFP28 optics! We specifically needed industrial temperature tolerance for outdoor cabinets along railway tracks. These 1310nm modules have been running for 3 months in harsh conditions with zero optical signal degradation. Perfect for rugged environment deployments.

105 Helpful vote Comments

P***n

United States

Verified Purchase

5 .0

2025-04-19

Excellent 25G SFP28 optic working flawlessly across our aggregate nodes. Great value.

75 Helpful vote Comments