Does this module support bidirectional communication over multi-mode fiber infrastructure?

No, this long-haul 40km SFP28 transceiver is strictly engineered and calibrated for single-mode fiber installations only.

Is this LS-BL273125-40C SFP28 module rated for harsh outdoor unconditioned node deployments?

This 25G transceiver module is rated for commercial operating temperatures (0°C to 70°C). If you want to deploy the module in unconditioned outdoor environments, you can select our industrial-grade LS-BL273125-40I module with a wide temperature range (-40°C to 85°C).

What is the typical power consumption of this 40km 25G SFP28 module under maximum data center traffic loads?

The LS-BL273125-40C BiDi optical module is engineered for high energy efficiency, operating comfortably with a low power consumption profile of less than 1.5W per unit.

Can I use this LS-BL273125-40C optical module on both ends of a single fiber link?

No, BiDi modules must always be deployed in complementary pairs. You must pair this Side A module (Tx1270nm/Rx1310nm) with a Side B module (Tx1310nm/Rx1270nm) at the remote end.

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25G SFP28

202111

LINK-PP LS-BL273125-40C 25G SFP28 BiDi 1270nm-TX/1310nm-RX 40km Simplex LC/UPC DOM SMF Optical Transceiver Module

Name: LS-BL273125-40C
Brand: LINK-PP
SKU: 202111
Price: 356.9 USD
Availability: InStock
Rating: 5 (59 reviews)

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: LINK-PP LS-BL273125-40C 25G SFP28 BiDi 1270nm-TX/1310nm-RX 40km Simplex LC/UPC DOM SMF Optical Transceiver Module

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Manufacture: LINK-PP

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

Compatible P/N:: LS-BL273325-10C | 10km; LS-BL273325-10E | 10km; LS-BL273325-10I | 10km; LS-BL332725-10C | 10km; LS-BL332725-10E | 10km; LS-BL332725-10I | 10km; LS-BL273325-20C | 20km; LS-BL273325-20E | 20km; LS-BL273325-20I | 20km; LS-BL332725-20C | 20km; LS-BL332725-20E | 20km; LS-BL332725-20I | 20km; LS-BL273125-40C | 40km; LS-BL273125-40I | 40km; LS-BL312725-40C | 40km; LS-BL312725-40I | 40km

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LINK-PP LS-BL273125-40C 25G SFP28 Specifications

LS-BL273125-40C is a hot-pluggable 25G SFP28 BiDi optical transceiver engineered for long-reach data transmission over single-mode fiber up to 40km, integrating a 1270nm DFB transmitter and a 1310nm APD receiver with built-in Digital Diagnostic Monitoring (DDM) to ensure deterministic signal integrity across a commercial operating temperature range of 0 to 70°C.

LINK-PP Part Number	LS-BL273125-40C	Vendor Name	LINK-PP
Form Factor	SFP28	Max Data Rate	25.78Gbps
Wavelength	1270nm-TX/1310nm-RX	Max Cable Distance	40km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	APD
TX Power	-1 to +7dBm	RX Power	-15 to +3dBm
Receiver Sensitivity	＜-19dBm	Receiver Overload	-7dBm
Operating Temperature Range	0 to 70°C	Protocols	MSA Compliant, CPRI, eCPRI

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Q: Does this module support bidirectional communication over multi-mode fiber infrastructure? By D***t on 2026-04-11

A: No, this long-haul 40km SFP28 transceiver is strictly engineered and calibrated for single-mode fiber installations only. By admin on 2026-04-12
Q: Is this LS-BL273125-40C SFP28 module rated for harsh outdoor unconditioned node deployments? By B***n on 2026-02-07

A: This 25G transceiver module is rated for commercial operating temperatures (0°C to 70°C). If you want to deploy the module in unconditioned outdoor environments, you can select our industrial-grade LS-BL273125-40I module with a wide temperature range (-40°C to 85°C). By admin on 2026-02-08
Q: What is the typical power consumption of this 40km 25G SFP28 module under maximum data center traffic loads? By A***h on 2025-07-21

A: The LS-BL273125-40C BiDi optical module is engineered for high energy efficiency, operating comfortably with a low power consumption profile of less than 1.5W per unit. By admin on 2025-07-22
Q: Can I use this LS-BL273125-40C optical module on both ends of a single fiber link? By C***k on 2025-05-02

A: No, BiDi modules must always be deployed in complementary pairs. You must pair this Side A module (Tx1270nm/Rx1310nm) with a Side B module (Tx1310nm/Rx1270nm) at the remote end. By admin on 2025-05-03

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E***d

United States

Verified Purchase

5 .0

2026-04-17

Perfect fit for enterprise core switch cluster! Using these BiDi optical modules in our corporate HQ server room to interconnect two main switch stacks across buildings. The simplex LC fiber connector snaps in tight with no mechanical play. SFF-8472 compliance ensures full telemetry reporting into our network monitoring software. Zero CRC errors recorded so far.

100 Helpful vote Comments

B***n

United States

Verified Purchase

5 .0

2026-03-16

Leasing dark fiber in metropolitan areas is incredibly expensive, so when our business needed to triple its data replication throughput between data centers, renting another fiber pair was cost-prohibitive. Deploying this BiDi single-mode SFP module allowed us to achieve 25Gbps bidirectional speeds over our existing single leased strand. The digital diagnostic monitoring (DDM) proved invaluable during staging, instantly showing us that our patch cord had a speck of dust causing high insertion loss. Once cleaned, RX power stabilized perfectly at -12dBm over our 31km link. (•‿•)✌️

127 Helpful vote Comments

J***n

United States

Verified Purchase

5 .0

2026-02-03

We completed a regional fiber loop expansion across three municipal buildings using single-strand single-mode fiber where our longest link spans approximately 34.6km with multiple old fusion splices. Thanks to the high-performance APD receiver design on these 25G SFP28 BiDi optical modules, the link maintained a solid lock without a single flap or frame drop under heavy load. The optical power budget is robust enough to easily handle real-world fiber attenuation and insertion loss. Total power consumption remained under 1.5W per module, keeping our edge switch stacks running cool in secondary distribution frames.

128 Helpful vote Comments

Z***n

United States

Verified Purchase

5 .0

2026-01-29

Deployed 20 of these SFP28 modules for our metro network ring upgrade, running stably at 25Gbps for weeks.

38 Helpful vote Comments

B***e

United States

Verified Purchase

5 .0

2025-12-19

Using these modules for a suburban base station backhaul deployment over a 28km stretch. The 25G BiDi SFP28 40km link budget leaves plenty of margin for splices and patch panels. Latency is virtually non-existent, fully matching eCPRI protocol specifications. Will definitely order more bulk batches for our phase 2 network rollout next quarter.

44 Helpful vote Comments

I***y

United States

Verified Purchase

5 .0

2025-11-07

Deploying 25G infrastructure for a carrier network upgrade requires strict compliance with wireless transport protocols, and we selected these 25G optical modules to handle CPRI Option 10 and eCPRI traffic profiles from BBU to RRH. With a max data rate of 25.78 Gbps, these transceivers handle high-bandwidth wireless fronthaul effortlessly across a 28km stretch. The single-mode fiber architecture combined with the 1270nm-TX/1310nm-RX configuration cut our dark fiber leasing overhead by exactly half across 45 cell sites. Built-in DDM data diagnostics allow to track optical power levels in real time and catching fiber bends before a full outage occurs.

149 Helpful vote Comments

R***n

Thailand

Verified Purchase

5 .0

2025-10-18

Thank you for the good quality, I like it very much.

54 Helpful vote Comments

D***y

United States

Verified Purchase

4 .0

2025-10-17

Always remember to order the matching opposite wavelength pair! The LS-BL273125-40C works perfectly as the upstream Side A (1270nm-TX/1310nm-RX). Make sure you don't forget to purchase the matching companion module (Side B: 1310nm-TX/1270nm-RX) for the remote end of the fiber link, otherwise your link won't establish! Wish there was a clear reminder bundle checkbox on the main checkout page. Optics are top tier though.

23 Helpful vote Comments

B***m

Ukraine

Verified Purchase

5 .0

2025-10-14

I had a great experience at l-p.com. They offer incredible Sfp Cage with an unbeatable price. Would recommend to anyone!

109 Helpful vote Comments

Y***s

United States

Verified Purchase

5 .0