What is the maximum transmission distance of the SM25G-SR?

It supports up to 100m over OM4 multi-mode fiber and 70m over OM3 MMF.

Can I use this module with single-mode fiber or APC connectors?

No, it is designed for multimode fiber with standard PC/UPC LC connectors; single-mode or APC will cause high loss and damage risk.

What is the typical power consumption of the SM25G-SR?

It consumes less than 3.3W under normal operating conditions.

Is the module MSA-compliant and interoperable with other brands?

Yes, it complies with SFP28 MSA and IEEE standards, ensuring interoperability with most MSA-compliant 25G switches and NICs.

Is the internal mechanical latch robust enough to handle frequent daily patch reconfigurations in a staging lab?

Yes, the secure Duplex LC bail latch mechanism is rigorously cycle-tested to ensure repeated clean connections without physical drift.

If our data center cooling system suffers a temporary failure, what is the maximum safe storage/idle temp threshold before internal optics degrade?

The transceiver housing can withstand non-operational storage temperatures ranging from -40°C up to 85°C without warping the internal optical array.

We have a critical cross-connect run that measures exactly 90m over OM4 fiber. Is that pushing the absolute edge of this optic's link budget?

Not at all, as long as your multi-mode fiber faces are clean and your patch panels are within normal insertion loss specs, it will hold a flawless 25G link.

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Chelsio SM25G-SR Compatible LINK-PP 25G SFP28 850nm 100m Duplex LC DOM MMF Optical Transceiver Module

Name: Chelsio SM25G-SR Compatible LINK-PP 25G SFP28 850nm 100m Duplex LC DOM MMF Optical Transceiver Module
Brand: LINK-PP
SKU: 214090
Price: 17.08 USD
Availability: InStock
Rating: 4.9 (32 reviews)

# 214090

Product: Chelsio SM25G-SR Compatible LINK-PP 25G SFP28 850nm 100m Duplex LC DOM MMF Optical Transceiver Module
SKU: 214090
P/N: LS-MM8525-S1C
Price: $ 19.86
Stock: 8903 in Stock
Sold: 1.3K
Product URL: https://www.l-p.com/products/473156.htm

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Manufacture: LINK-PP

P/N: LS-MM8525-S1C

Compatible:: Cisco; LINK-PP; Arista; Avago; Brocade; Chelsio; DELL; Edge-Core; FS; H3C; HPE Aruba; HPE BladeSystem; HPE H3C; HW; IBM; Intel; Juniper; Mellanox; NETGEAR; Ubiquiti

Compatible P/N:: SM25G-SR | 100m

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Chelsio SM25G-SR Compatible LINK-PP 25G SFP28 Specifications

SM25G-SR is a hot-pluggable 25GBASE-SR SFP28 optical transceiver utilizing an 850nm VCSEL transmitter and PIN receiver to deliver a deterministic 25Gbps line rate across optical transport distances of up to 70m over OM3 or 100m over OM4 multi-mode fiber.

Chelsio Part Number	SM25G-SR	Vendor Name	LINK-PP
Form Factor	SFP28	Max Data Rate	25.7813Gbps
Wavelength	850nm	Max Cable Distance	100m@OM4/70m@OM3
Connector	Duplex LC	Media	MMF
Transmitter Type	VCSEL	Receiver Type	PIN
Power Consumption	≤3.3W	Extinction Ratio	>2dB
DDM/DOM	Supported	Operating Temperature Range	0°C to +70°C
TX Power	-8.4~2.4dBm	Minimum Receiver Power	＜-10.3dBm
Powerbudget	1.9dB	Receiver Overload	2.4dBm
DDM/DOM	Supported	FEC Function	Support RS-FEC, FC FEC
Protocols	SFF-8472, SFF-8024, SFF-8431, SFF-8432	Warranty	5 Years

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Q: Is the internal mechanical latch robust enough to handle frequent daily patch reconfigurations in a staging lab? By U***l on 2026-04-22

A: Yes, the secure Duplex LC bail latch mechanism is rigorously cycle-tested to ensure repeated clean connections without physical drift. By admin on 2026-04-23
Q: If our data center cooling system suffers a temporary failure, what is the maximum safe storage/idle temp threshold before internal optics degrade? By W***n on 2025-11-21

A: The transceiver housing can withstand non-operational storage temperatures ranging from -40°C up to 85°C without warping the internal optical array. By admin on 2025-11-22
Q: We have a critical cross-connect run that measures exactly 90m over OM4 fiber. Is that pushing the absolute edge of this optic's link budget? By A***y on 2025-03-08

A: Not at all, as long as your multi-mode fiber faces are clean and your patch panels are within normal insertion loss specs, it will hold a flawless 25G link. By admin on 2025-03-09

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J***l

Ireland

Verified Purchase

5 .0

2026-04-07

These modules are doing a fantastic job handling heavy virtualization traffic across our NVMe-over-Fabrics setup. The 850nm VCSEL laser holds up under high duty cycles. No CRC errors on the interfaces since deployment. Delivery to Ireland was fast, too.

117 Helpful vote Comments

J***d

Indonesia

Verified Purchase

5 .0

2026-03-13

Managing enterprise networks means constantly balancing tight budgets against stringent uptime SLAs. I ordered a batch of these LINK-PP 25GBASE-SR SFP28 transceivers for a corporate headquarters network refresh, linking our distribution switches across three separate floors. The 850nm VCSEL transceivers have given us absolutely zero trouble. They interface perfectly with our existing multi-mode fiber patch leads and panels. The real-time DOM diagnostics are vital for our proactive maintenance strategies, allowing us to see exactly how the optical links are performing. The modules are fully compliant with IEEE 802.3 and SFF-8472 standards, ensuring total interoperability. LINK-PP has engineered an exceptional product here that I highly recommend for enterprise switch infrastructure.

149 Helpful vote Comments

A***y

New Zealand

Verified Purchase

5 .0

2026-01-29

Easiest 25G upgrade ever. Link came up instantly over our existing OM4 runs.

18 Helpful vote Comments

N***n

United Kingdom

Verified Purchase

4 .0

2026-01-28

Good cheap 25GBASE-SR optics for enterprise switch deployments. The DOM functions perfectly, reporting accurate laser metrics. Deducted one star because delivery to our UK site took an extra two days due to customs clearance delays. The modules themselves are perfect though.

26 Helpful vote Comments

G***w

Iran, Islamic Republic of

Verified Purchase

5 .0

2026-01-11

While these are commercial-grade (0-70°C) modules meant for controlled indoor server environments, we utilized them in our indoor staging lab to simulate short-distance 25G base station backhaul loops and edge aggregation configurations. The transceivers performed flawlessly under intensive packet injection testing mimicking heavy mobile data streams. The 850nm wavelength over Duplex LC multi-mode fiber provides excellent signal integrity over short distances, and the optical eye diagram was remarkably clean. The DOM feature works effortlessly on our carrier-grade edge routers, providing critical metrics on Tx laser degradation over time. LINK-PP's build quality is evident in the casing mold—there is no physical stickiness or insertion friction in high-density patch panels, which can be an annoying issue with cheap 3rd party clones. For indoor network distribution layers and telecom staging, this transceiver is exceptional value.

151 Helpful vote Comments

M***e

Romania

Verified Purchase

4 .0

2025-11-24

Ordered a pack of 12 for our corporate network room upgrade. Modules link up cleanly at 25Gbps on our switches. However, the outer packaging was missing the English user instruction leaflet. Not a big deal for experienced network engineers, but would be nice for completeness. Hardware is solid.

13 Helpful vote Comments

G***y

Lithuania

Verified Purchase

5 .0

2025-11-08

Excellent 25G SFP28 transceivers for server-to-switch interconnects in our regional data center. Checked the DDM info via CLI, and Tx/Rx optical powers are completely within nominal ranges. Will definitely look into LINK-PP for our next bulk fiber hardware procurement.

159 Helpful vote Comments

F***d

Hong Kong

Verified Purchase

5 .0

2025-10-03

Perfect fit for our data center leaf-spine architecture. 25G rate is stable, with low heat generation, and DOM readings are fully integrated into our SNMP monitoring dashboard. Very happy with this purchase.

48 Helpful vote Comments

J***y

Cambodia

Verified Purchase

5 .0

2025-06-21

Bought a batch of these LS-MM8525-S1C 25GBASE-SR modules for a Core-to-Aggregation link upgrade in our Chicago office. They hit full 25G speeds over 85m of OM4 fiber without any fuss. The built-in DOM allows real-time diagnostics on our Enterprise switches. Real lifesaver for the price!

106 Helpful vote Comments

L***i

Bulgaria

Verified Purchase

4 .0

2025-06-17

Modules perform exactly as advertised, hitting full 25G line rates over our 60m OM3 fiber runs. My only tiny complaint is that the pull-tab latches are a bit stiff on first insertion compared to our old 10G optics. They seat securely though, and DOM telemetry is perfect. Good budget choice.

16 Helpful vote Comments

E***e

Singapore

Verified Purchase

5 .0

2025-05-15

Using these for internal server room patching between our main firewalls and core switches. The 100m distance limit on OM4 is perfect for our layout. Total peace of mind with the native DOM monitoring support. Will buy again.

85 Helpful vote Comments

H***n

Israel

Verified Purchase

5 .0

2025-04-24

We had a critical requirement to upgrade our internal corporate SAN to handle multi-stream 4K video editing and large database replication. Our setup involves an array of servers connected to a central storage array via OM4 fiber. These 25G SFP28 transceivers were a drop-in replacement for our aging 10G modules. The link came up at full 25Gbps instantly without any manual configuration or speed forcing required in the OS. We monitored the DDM/DOM attributes via the switch interface for a week; the operating temperature remained perfectly stable at 41°C. The duplex LC connector gives a solid, reassuring 'click' when fully seated, preventing accidental disconnects during routine cable management in the rack. Having reliable, cheap 25GBASE-SR optics available saves our IT budget that can be reallocated to raw storage capacity. A+ product.

128 Helpful vote Comments

M***s

Taiwan, Province of China

Verified Purchase

5 .0

2025-04-11

LINK-PP does it again. Flawless EEPROM coding, compatibility is 100% verified.

21 Helpful vote Comments

C***y

Spain

Verified Purchase

5 .0

2025-02-27

Super fast shipping to our warehouse in Spain. Modules work beautifully. ✨

53 Helpful vote Comments

J***M

United States

Verified Purchase

5 .0

2023-07-16

It’s compatible with my devices. Quality of your products & your support is very good. 5 Stars for everything.

44 Helpful vote Comments

K***i

Maldives

Verified Purchase

5 .0

2023-07-13

Received what I ordered in a timely manner. Products arrived well packed and in perfect condition.

33 Helpful vote Comments

R***y

Canada

Verified Purchase

5 .0

2023-06-10

Simple order. Good price. Promptly delivered

62 Helpful vote Comments

C***n

Sweden

Verified Purchase

5 .0

2023-06-08

Always like to order network gear from you guys, awesome!

95 Helpful vote Comments

E***a

Israel

Verified Purchase

5 .0

2023-04-29

Great products and prices, outstanding communication. Excellent warranties, too.

69 Helpful vote Comments

N***v

Brazil

Verified Purchase

5 .0

2023-04-16

Brilliant and easy way to select the most suitable Transceiver Modules for my Switches.

23 Helpful vote Comments

H***n

Canada

Verified Purchase

5 .0

2023-04-06

Very easy to order, very good web display and cheaper than others

43 Helpful vote Comments

M***n

South Africa

Verified Purchase

5 .0

2023-03-16

The item was as advertized and delivered Fast

47 Helpful vote Comments

B***s

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2022-12-29

Great price for product and shipping. Fast shipping. Will shop again!

80 Helpful vote Comments

S***g

Bulgaria

Verified Purchase

5 .0

2022-10-22

found it easy to shop LINK-PP although the system kept deleting my order

31 Helpful vote Comments

C***n

Denmark

Verified Purchase

5 .0

2022-09-15

Prices for some items are not very reasonable.

47 Helpful vote Comments

M***y

Belarus

Verified Purchase

5 .0

2022-05-03

Ordering was quick with email notifications of shipping and tracking numbers. Price was very competitive.

12 Helpful vote Comments

L***i

United States

Verified Purchase

5 .0

2022-04-15

Cheap prices, Fast shipping and good products.

23 Helpful vote Comments

J***n

Israel

Verified Purchase

5 .0

2022-04-09

It’s not my first time dealing with this company but i’m just satisfied as usual.

84 Helpful vote Comments

G***T

Thailand

Verified Purchase

5 .0

2022-02-11

The component worked - no hassle - and continues working. Nice so far.

18 Helpful vote Comments

W***n

Sweden

Verified Purchase

5 .0

2022-01-14

The company works with us very easily and I would recommend them to others

65 Helpful vote Comments

M***l

Ireland

Verified Purchase

5 .0

2022-01-12

I've always been satisfied with the selection and prices you guys offer. You guys ROCK!

14 Helpful vote Comments

S***n

India

Verified Purchase

5 .0

2022-01-03

Quick and easy ordering process..best price i found online for this item!

48 Helpful vote Comments

Verified Purchase

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Chelsio SM25G-SR Compatible LINK-PP 25G SFP28 850nm 100m Duplex LC DOM MMF Optical Transceiver Module

Product Details

Chelsio SM25G-SR Compatible LINK-PP 25G SFP28 Specifications

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Key Features of Chelsio SM25G-SR Compatible LINK-PP 25.7813G SFP28

Chelsio SM25G-SR Compatible LINK-PP 25G SFP28 Optical Module

SM25G-SR: 25 Gbps Connectivity for Top-of-Rack Interconnects

SM25G-SR Module with 850nm Wavelength

SM25G-SR Module Supporting 100m Transmission

SM25G-SR Module with Duplex LC Interface

SM25G-SR Module with DOM for Real-Time Monitoring

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