We have older top-of-rack switches that require low-power optics — what is the maximum power draw for this transceiver?

The LS-BL312725-40C operates on a standard +3.3V supply and draws under 1.5W of power. This low power draw prevents port thermal throttling in dense switch configurations.

We are mounting switches inside an unconditioned street cabinet for video surveillance backhaul — is this optical module sufficient?

This commercial-grade SFP28 module is rated for 0°C to +70°C case operating temperature inside standard indoor racks or climate-controlled enclosures. If your outdoor cabinets experience freezing winters or extreme heat, we recommend our industrial-grade version (-40°C to +85°C).

We manage a multi-tenant rack environment — can we read real-time laser bias and temperature stats via standard SNMP polling on this optical transceiver?

Yes, the built-in SFF-8472 compliant DDM function lets you monitor optical Rx/Tx power, voltage, laser bias current, and temperature natively via SNMP or CLI.

Can we use these transceivers for 5G mobile fronthaul tower links running eCPRI protocol?

Yes, it fully supports both 25.78Gbps Ethernet (IEEE 802.3cc) and 5G eCPRI / CPRI Option 10 wireless protocols over 40km SMF.

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Arista SFP-25G-BD-40 Compatible LINK-PP 25G SFP28 BiDi 1310nm-TX/1270nm-RX 40km Simplex LC/UPC DOM SMF Optical Transceiver Module

Name: Arista SFP-25G-BD-40 Compatible LINK-PP 25G SFP28 BiDi 1310nm-TX/1270nm-RX 40km Simplex LC/UPC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 218396
Price: 356.9 USD
Availability: InStock
Rating: 4.9 (35 reviews)

# 218396

Product: Arista SFP-25G-BD-40 Compatible LINK-PP 25G SFP28 BiDi 1310nm-TX/1270nm-RX 40km Simplex LC/UPC DOM SMF Optical Transceiver Module
SKU: 218396
P/N: LS-BL312725-40C
Price: $ 415
Stock: 111 in Stock
Sold: 977
Product URL: https://www.l-p.com/products/494250.htm

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Manufacture: LINK-PP

P/N: LS-BL312725-40C

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

Compatible P/N:: SFP-25G-BD | 10km; SFP-25G-BD-I | 10km; SFP-25G-BD | 20km; SFP-25G23-BX20-I | 20km; SFP-25G32-BX20-I | 20km; SFP-25G-BD-40 | 40km; SFP-25G-BD-40-I | 40km; SFP-25G23-BX40 | 40km

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Arista SFP-25G-BD-40 Compatible LINK-PP 25G SFP28 Specifications

SFP-25G-BD-40 operates as a 25G SFP28 BiDi single-mode optical transceiver module, delivering reliable 40km connectivity over 1310nm-TX/1270nm-RX wavelengths within a 0 to 70°C commercial temperature envelope.

Arista Part Number	SFP-25G-BD-40	Vendor Name	LINK-PP
Form Factor	SFP28	Max Data Rate	25.78Gbps
Wavelength	1310nm-TX/1270nm-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: We have older top-of-rack switches that require low-power optics — what is the maximum power draw for this transceiver? By N***s on 2026-03-28

A: The LS-BL312725-40C operates on a standard +3.3V supply and draws under 1.5W of power. This low power draw prevents port thermal throttling in dense switch configurations. By admin on 2026-03-29
Q: We are mounting switches inside an unconditioned street cabinet for video surveillance backhaul — is this optical module sufficient? By H***e on 2026-01-09

A: This commercial-grade SFP28 module is rated for 0°C to +70°C case operating temperature inside standard indoor racks or climate-controlled enclosures. If your outdoor cabinets experience freezing winters or extreme heat, we recommend our industrial-grade version (-40°C to +85°C). By admin on 2026-01-10
Q: We manage a multi-tenant rack environment — can we read real-time laser bias and temperature stats via standard SNMP polling on this optical transceiver? By M***y on 2025-06-25

A: Yes, the built-in SFF-8472 compliant DDM function lets you monitor optical Rx/Tx power, voltage, laser bias current, and temperature natively via SNMP or CLI. By admin on 2025-06-26
Q: Can we use these transceivers for 5G mobile fronthaul tower links running eCPRI protocol? By L***r on 2025-04-03

A: Yes, it fully supports both 25.78Gbps Ethernet (IEEE 802.3cc) and 5G eCPRI / CPRI Option 10 wireless protocols over 40km SMF. By admin on 2025-04-04

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M***x

Japan

Verified Purchase

5 .0

2026-05-23

Flawless 25G BiDi SFP28 module for saving fiber cores between two remote POPs. ⚡

41 Helpful vote Comments

H***l

Thailand

Verified Purchase

5 .0

2026-05-04

Power consumption is under 1.5W per module, which keeps our switch thermal budget in check. Solid for high-density 25G deployments.

87 Helpful vote Comments

W***y

Finland

Verified Purchase

5 .0

2026-04-24

High-density 25G links with simplex LC fiber saved us thousands in dark fiber lease fees. Paired this LS-BL312725-40C with its complementary 1270nm-TX/1310nm-RX module and achieved 25Gbps line rate over 35km.

107 Helpful vote Comments

B***s

United States

Verified Purchase

5 .0

2026-03-18

Overhauled our regional campus backbone using these 25G BiDi SFP28 optics over single-strand LC single-mode fiber. Low power consumption keeps switch chassis heat to a minimum, preserving overall hardware lifespan in compact wiring closets. Optical power diagnostics align precisely with calibrated handheld power meter measurements within a tight tolerance. Compatibility was tested across our switches and passed without any link flaps. A dependable 25G optical transceiver that delivers consistent performance at enterprise scale.

102 Helpful vote Comments

P***a

Netherlands

Verified Purchase

5 .0

2026-02-24

We needed to double our bandwidth over a leased single-strand fiber pair between two nodes 34km apart. The LINK-PP LS-BL312725-40C modules worked instantly on our core datacenter switches. DDM shows optical power well within specs at -6dBm RX.

95 Helpful vote Comments

F***b

Turkey

Verified Purchase

5 .0

2026-01-25

Reliable 25G SFP28 single-mode optical transceiver with LC simplex connector. Low insertion loss and tight wavelength tolerance (1310nm TX / 1270nm RX). Excellent build quality! ✨

84 Helpful vote Comments

N***s

Germany

Verified Purchase

4 .0

2026-01-20

Module synced instantly at 25G full duplex over a 37km single-strand fiber loop. Only minor critique is that the parcel was rerouted through a different regional sorting hub, adding an extra day to total transit time. High-quality hardware overall, will buy again!

20 Helpful vote Comments

A***n

Singapore

Verified Purchase

5 .0

2025-12-28

We integrated 100 units of these 25G BiDi SFP28 modules across remote hub sites for eCPRI base station backhaul. Thermal stability was a primary concern, but even inside street enclosures reaching over 50°C internal temps, the DDM telemetry logged stable laser output without wavelength drift. The 1310nm TX and 1270nm RX optical separation is clean with zero cross-talk on OTDR traces. Low power consumption under 1.5W per optic keeps the switch chassis cool, delivering genuine enterprise-grade reliability for demanding wireless backhaul.

120 Helpful vote Comments

R***t

Poland

Verified Purchase

5 .0

2025-11-17

Ideal solution for CPRI Option 10 base station links. Low power consumption under 1.5W per transceiver keeps switch thermal load manageable in tight distribution frames.

79 Helpful vote Comments

A***s

Italy

Verified Purchase

5 .0

2025-10-21

Hot-swap friendly, no reboot needed.

42 Helpful vote Comments

T***a

United States

Verified Purchase

5 .0

2025-10-02

Found what I needed at a good price. Ordered it and received it in four days.

103 Helpful vote Comments

Z***d

India

Verified Purchase

5 .0

2025-09-01

Bought these for our 25G NAS cluster. Single-fiber bidirectional transmission is a lifesaver when you've already maxed out your conduit space. No FEC errors so far after 3 weeks.

78 Helpful vote Comments

F***r

Sweden

Verified Purchase

5 .0

2025-08-17

Upgraded our inter-building backbone from 10G BiDi to 25G BiDi. These 1310nm-TX 1270nm-RX SFP28 transceivers snapped right in with clean DOM diagnostics and immediate link establishment across our distribution layer switches.

72 Helpful vote Comments

R***z

Canada

Verified Purchase

5 .0

2025-07-23

Perfect 1310nm-TX/1270nm-RX optics pair for our long-haul 40km single-mode fiber span.

71 Helpful vote Comments

j***a

Brunei Darussalam

Verified Purchase

5 .0

2025-07-18

My contact with LINK-PP involved more than just a few clicks and a purchase for 1000Base-T Optical Transceiver Module. I had to make a return for no fault of the Company and they were helpful and courteous throughout the process. I am quite pleased.

64 Helpful vote Comments

E***s

Ukraine

Verified Purchase

5 .0

2025-05-29

LINK-PP do things right and if for some reason there is an issue they make it right.

78 Helpful vote Comments

P***z

Spain

Verified Purchase

5 .0

2025-05-11

Great price for 40km 25G BiDi SFP28 module, no brainer!

53 Helpful vote Comments

D***r

Italy

Verified Purchase

5 .0

2025-03-13

I have never had a problem with ordering from Linkpp

49 Helpful vote Comments

C***m

Norway

Verified Purchase

5 .0

2025-03-04

Deploying 25G SFP28 BiDi 40km optics for 5G fronthaul eCPRI links usually gets expensive. LINK-PP modules gave us enterprise-grade stability at a fraction of standard cost. Zero bit errors recorded after 72 hours of stress test.

111 Helpful vote Comments

J***e

Indonesia

Verified Purchase

5 .0

2024-08-09

I just placed my second order with LINK-PP and have been extremely impressed by the service. Orders are filled quickly and the prices are far better than ordering directly from local stores.

69 Helpful vote Comments

T***S

United States

Verified Purchase

5 .0

2024-05-27

can not wait to receive my items. So far the process has been awesome.

29 Helpful vote Comments

H***a

United States

Verified Purchase

5 .0

2024-03-04

Received in 7 days, very good.

32 Helpful vote Comments

D***g

Republic of Korea

Verified Purchase

4 .0

2024-02-22

Came on time, great customer service with attention to communication. Great supplier!

87 Helpful vote Comments

L***r

United States

Verified Purchase

5 .0

2023-12-16

pleased with the purchase!

55 Helpful vote Comments

H***u

United States

Verified Purchase

5 .0

2023-10-23

Will absolutely purchase from you soon. Pretty good.

49 Helpful vote Comments

S***r

Cameroon

Verified Purchase

5 .0

2023-08-14

I have no problem with this company. They are good people and gave a lot of help to me during the purchase.

43 Helpful vote Comments

G***a

United States

Verified Purchase

5 .0

2023-07-22

Item arrived much quicker than I expected. Thank you.

13 Helpful vote Comments

r***g

Netherlands

Verified Purchase

5 .0

2023-05-26

Yes you can get this item for much cheaper elsewhere but who knows what kind of quality you\'re gonna be getting. And replacing that part and dealing network problems from low quality parts will cost you much more in the long run.

59 Helpful vote Comments

J***d

United States

Verified Purchase

5 .0

2023-05-07

Item came on time, as described. No issues with the seller.

98 Helpful vote Comments

M***f

Russian Federation

Verified Purchase

5 .0

2023-03-20

They do a great job. Customer service is very responsive. All of the 10/25/40G Transceiver Modules and Lan Transformer are tested.

39 Helpful vote Comments

G***d

United States

Verified Purchase

5 .0

2022-09-18

First order on this website. It is very easy to find what I need and place the orders, will see how Fast it ships and if the product is as advertised.

29 Helpful vote Comments

E***l

Italy

Verified Purchase

5 .0

2022-04-14

Always been reliable.

89 Helpful vote Comments

D***i

Brazil

Verified Purchase

5 .0

2022-04-10

Good company, great people, excellent range of product, fair prices. I have never had a bad experience with them.

57 Helpful vote Comments

M***t

Hong Kong

Verified Purchase

5 .0

2022-03-08

The price for 10/25/40G Transceiver Modules is very competitive, in fact better than I've seen elsewhere and the purchase process was flawless. I'd only purchase through l-p.com in the future.

54 Helpful vote Comments

J***p

Norway

Verified Purchase

5 .0

2022-02-07

Great company to do business with. Best prices around, Fast and quality shipping.

28 Helpful vote Comments