SFP-10G-SR vs SFP-10G-SR-S vs SFP-10G-SR-X, What is the difference?

SFP-10G-SR, SFP-10G-SR-S, and SFP-10G-SR-X 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?

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 link with 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.

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.

What is SFP-10G-SR-X

SFP-10G-SR-X is also typically used as a 10GBASE-SR SFP+ transceiver part number by Cisco. According to Cisco, it is 10GBASE-SR SFP+ Module supports multirate including 10GBASE-SR, 10GBASE-SW and OTU2/OTU2e for extended operating temperature range. Different from SFP-10G-SR,
SFP-10G-SR -X supports OTU2/OTU2e.

SFP-10G-SR-X is also used as the replacement model of compatible 10GBase-SR SFP+ Transceiver with the same function and specification offered by many other 3rd party providers and stores.

SFP-10G-SR vs SFP-10G-SR-S vs SFP-10G-SR-X Comparison, Similarity and difference?

Now let us make a comparison on the detailed specification on them. the below table lists the main specification of those 10GBASE-SR SFP+ transceivers.

FeaturesSFP-10G-SRSFP-10G-SR-SSFP-10G-SR-X
ApperanceSameSameSame
Transceiver TypeSFP+ TransceiverSFP+ TransceiverSFP+ Transceiver
Wavelength850 nm850 nm850 nm
Reach300 m300 m300 m
Fibre TypeMultimode Fiber (MMF)Multimode Fiber (MMF)Multimode Fiber (MMF)
Connector TypeLC DuplexLC DuplexLC Duplex
Data Rate10 Gbps10 Gbps10 Gbps
Cabling TypeEthernet 10GBASE-SREthernet 10GBASE-SR10GBASE-SR,10GBASE-SW, OTU2/OTU2e
DOM SupportYesYesYes
Operating Temperature0°C to 70°C (Commercial Grade)0°C to 70°C (Commercial Grade)-5°C to 85°C (Extended Grade)
Storage Temperature-40°C to 85°C-40°C to 85°C-40°C to 85°C
Compatibility
Power Consumption0.6 W0.6 W0.6 W
Weight0.025 kg0.025 kg0.025 kg
Other featuresNon-S-ClassS-ClassExtended Temperature and  OTU2/OTU2e
Price (Router-Switch)US$235.00 US$158.00 US$1,575.00 
Price (Monoprice)N/AUS$136.75 N/A
Price (Optcore)US$12.00 US$12.00 US$14.00 

Conclusion

From the above comparison, we know that SFP-10G-SR, SFP-10G-SR-S, and SFP-10G-SR-X are 10GBASE-SR SFP+ transceiver, the main difference is the different operating temperature and supports different data rate. They have the same main features but minor different some specifications. Both the SFP-10G-SR price and SFP-10G-SR-S price is relatively lower than SFP-10G-SR-X price, for most customers, SFP-10G-SR-S will be the right option at a cheaper price. Optcore offers high-quality 3rd party 10GBASE-SR SFP+ transceivers that 100% compatible with SFP-10G-SR, SFP-10G-SR-S, and SFP-10G-SR-X  at best price.

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