SFP-10g-sr vs SFP-10g-sr-s: What's the difference?

SFP-10G-SR and SFP-10G-SR-S are 10GBASE-SR SFP+ transceiver with the similar product description, they are commonly used in Cisco switches and other networking devices for very short reach applications, but many IT managers are confused when choosing a 10G SFP+ SR module. Which one should be chosen? What is the similarity? Any Difference between them?  
 

Features	SFP-10G-SR	SFP-10G-SR-S
Apperance	Same	Same
Transceiver Type	SFP+ Transceiver	SFP+ Transceiver
Wavelength	850 nm	850 nm
Reach	300 m	300 m
Fibre Type	Multimode Fiber (MMF)	Multimode Fiber (MMF)
Connector Type	LC Duplex	LC Duplex
Data Rate	10 Gbps	10 Gbps
Cabling Type	Ethernet 10GBASE-SR	Ethernet 10GBASE-SR
DOM Support	Yes	Yes
Operating Temperature	0°C to 70°C (Commercial Grade)	0°C to 70°C (Commercial Grade)
Storage Temperature	-40°C to 85°C	-40°C to 85°C
Compatibility
Power Consumption	0.6 W	0.6 W
Weight	0.025 kg	0.025 kg
Other features	Non-S-Class	S-Class
Price (Router-Switch)	US$235.00	US$158.00
Price (Monoprice)	N/A	US$136.75
Price (Optcore)	US$12.00	US$12.00

 
 
 
Today, let’s make a comparison to help you learn the difference. Please note all the below information is only for reference, you are recommended to buy original transceiver from Cisco or it’s distributor directly. First, we’d better get to know some basic information that helps us classify difference.

What is SFP-10G-SR？

SFP-10G-SR is typically used as a part number by Cisco. According to Cisco, it is 10GBASE-SR SFP+ Module supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade Multimode Fiber (MMF). SFP-10G-SR is a hot-swappable input/output device which allows a 10 Gigabit Ethernet port to linkwith a fiber optic network. SFP-10G-SR is also used as the replacement model of compatible 10GBase-SR SFP+ Transceiver with the same function and performance supplied by many other 3rd party suppliers and stores.

Do SFP-10G-SR Modules Support GE?

10GBASE-SR SFP modules can support GE speeds, but this depends also on host system port properties. In the case of Cisco Catalyst switches, it will not mostly work, but in some systems, you can configure a 10G port to run in GE mode and it will be supported by a transceiver module.

Which Patch Cable Should I Use for SFP-10G-SR?

10GBASE-SR SFP module has an LC duplex connector operating over 850nm for short reach, a multimode LC-LC fiber patch cable is the best fit. It supports a link length of 26 meters on standard multimode fiber (MMF), and the reach can be extended up to 300 m with laser-optimized OM3 MMF and to 400 m with OM4 MMF.

Description

Designed to work with most Cisco® networking equipment, the Cisco SFP-10G-SR-SFP+ Transceiver Module is ideal for large data centers and enterprise networks. It offers 10-gigabit Ethernet® connectivity options for extra high-speed network applications in server rooms. Stainless steel material provides this Cisco SFP-10G-SR- small form-factor pluggable (SFP)+ transceiver module with corrosion-resistance for long-term durability.
 

What is SFP-10G-SR-S？

Like as SFP-10G-SR, SFP-10G-SR-S is typically used as the part number of Cisco S-Class 10GBASE-SR SFP+ Module. The main difference between SFP-10G-SR and SFP-10G-SR-S is the different features. According to Cisco, S-class optics is an inexpensive option designed for enterprise and data center 10G and 40G applications. The S class is suitable for the below environment: in non-temperature controlled environments, e.g. rugged/ industrial (RGD), Optics plugged on platforms that require extended operating temperature range (EXT), TAA compliance.

Another difference is the price, SFP-10G-SR-S is offered with a more attractive price. That is because of SFP-10G-SR-S does not display several unnecessary features like as SFP-10G-SR.

SFP-10G-SR-S is also used as the replacement model of compatible low price 10GBase-SR SFP+ Transceiver with the same function and performance supplied by many other 3rd party vendors and suppliers. It usually works with selected Cisco switches.

The Cisco 10GBASE-SR module SFP-10G-SR-S supports a link length of 26 meters on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber (MMF). Using 2000 MHz*km MMF (OM3), up to 300-meter link lengths are possible. Using 4700 MHz*km MMF (OM4), up to 400 meter link lengths are possible.
 

Cisco SFP-10G-SR-S module (S-Class)

The Cisco 10GBASE-SR module supports a link length of 26 meters on standard Fiber Distributed Data Interface (FDDI)-grade Multimode Fiber (MMF). Using 2000 MHz*km MMF (OM3), up to 300-meter link lengths are possible. Using 4700 MHz*km MMF (OM4), up to 400 meter link lengths are possible. SFP-10G-SR-S does not support FCoE.
 
 
 
 

SFP-10G-SR-S vs SFP-10G-SR: Similarity

Seemingly and technically, they don’t have much difference. SFP-10G-SR-S shares the same product specification with SFP-10G-SR. SFP-10G-SR is compliant with 10GBASE-SR standard. The Cisco 10GBASE-SR module supports a link length of 26m on standard Fiber Distributed Data Interface (FDDI)-grade multimode fiber, up to 300m link lengths over OM3 and 400m link lengths over OM4 cables.
Cisco SFP-10G-SR transceiver is hot-swappable input/output device which allows a 10 Gigabit Ethernet port to link with a fiber optic network. Because it is hot-swappable and MSA compliant, the Cisco SFP-10G-SR transceiver can be plugged directly into any Cisco SFP+ based transceiver port, without the need to power down the host network system. This capability makes moves, add-ons and exchanges quick and painless.