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What Is The Difference: SFP vs SFP+

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As we know, a SFP module just looks the same as the SFP+ module. And most switches can both support SFP module and SFP+ module. So, do these two modules really refer to the same one? What’s the difference between SFP vs SFP+?

SFP vs SFP+

SFP vs SFP+: SFP Definition
SFP stands for Small Form-factor Pluggable. It is a hot-pluggable transceiver that plugs into the SFP port of a network switch and supports SONET, Gigabit Ethernet, Fibre Channel, and other communications standards. SFP specifications are based on IEEE802.3 and SFF-8472. They are capable of supporting speeds up to 4.25 Gbps. Due to its smaller size, SFP replaces the formerly common gigabit interface converter (GBIC). Therefore SFP is also called Mini-GBIC. By choosing different SFP module, the same electrical port on the switch can connect to different fiber types (multimode or single-mode) and different wavelengths.

SFP module Cisco

SFP vs SFP+: SFP+ Definition
Since SFP supports only up to 4.25 Gbps, SFP+ that supports data rates up to 16 Gbps was later introduced. In fact, SFP+ is an enhanced version of the SFP. The SFP+ specifications are based on SFF-8431. In today’s most applications, SFP+ module usually supports 8 Gbit/s Fibre Channel, 10 Gigabit Ethernet and Optical Transport Network standard OTU2. In comparison to earlier 10 Gigabit Ethernet XENPAK or XFP modules, SFP+ module is smaller and becomes the most popular 10 Gigabit Ethernet module in the market.

SFP+ module Cisco

SFP vs SFP+
Review the SFP and SFP+ definition mentioned above, we can know that the main difference between SFP and SFP+ is the data rate. And due to different data rate, the applications and transmission distance is also different.

Ethernet Application

SFP (1Gbps) SFP+ (10Gbps)
1000BASE-SX SFP 850nm 550m

1000BASE-LX/LH SFP 1310nm 20km

1000BASE-EX SFP 1310nm 40km

1000BASE-ZX SFP 1550nm 80km

10GBASE-SR SFP+ 850nm 300m

10GBASE-LRM SFP+ 1310nm 220m

10GBASE-LR SFP+ 1310nm 10km

10GBASE-ER SFP+ 1550nm 40km

10GBASE-ZR SFP+ 1550nm 100km

Fiber Channel Application

SFP (2G, 4G) SFP+ (8G)
2.125Gbps:

2G Fibre Channel SFP 1310nm 2km/15km/20km/40km

2G Fibre Channel SFP 1510nm 80km

4.25Gbps:

4G Fibre Channel SFP 850nm 150m

4G Fibre Channel SFP 1310nm 5km/10km/15km/20km

8.5Gbps:

8G Fibre Channel SFP+ 850nm 150m

8G Fibre Channel SFP+ 1310mn 10km/20km/40km

8G Fibre Channel SFP+ 1510nm 80km

SONET/SDH Application

SFP (155Mbps, 622Mbps, 2.5Gbps) SFP+ (10G)
155Mbps:

OC-3/STM-1 1310nm 2km/15km/40km

OC-3/STM-1 1510nm 80km

622Mbps:

OC-12/STM-4 1310nm 500m/2km/15km/40km

OC-12/STM-4 1510nm 80km

2.5Gbps:

OC-48/STM-16 1310nm 2km/15km/40km

OC-48/STM-16 1510nm 80km

OC-192/STM-64 850nm 300m

OC-192/STM-64 1310nm 2km/10km/20km/40km

OC-192/STM-64 1510nm 80km

As we’ve explained the difference of SFP vs SFP+. Usually, SFP module plugs into SFP port of the switch and SFP+ module plugs into SFP+ port of the switch. But, sometimes SFP module can also be plugged into SFP+ port. Which SFP or SFP+ module should you choose all depends on your switch types. Fiberstore is a reliable SFP transceiver module manufactures, all SFP module and SFP+ module types are available in FS.COM. Besides, SFP+ cable is also provided. What’s more, the price of SFP module and SFP+ module is lower than many other manufactures. SFP test is strict in FS.COM. Matching fiber patch cable is also available.

Related Article: Compatible SFPs for Ubiquiti EdgeSwitch and UniFi switch

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Related Article: Understanding Video SFP Transceivers

How Many SFP Module Types Do You Know

How many modules types do you know? From the Fiberstore, I find this answer.The Fiber Optic Transceivers have a full range of sfp modules. Fiberstore supply various kinds of SFP module 100% compatible with Cisco SFP, HP SFP, Juniper SFP, Netgear SFP, DELL SFP, CWDM SFP, DWDM SFP, BIDI SFP, 10G SFP and so on. Next, I will give you a brief introduction on SFP module types provided by Fiberstore.

SFP Module Types

First SFP Module Types: CWDM SFP

The CWDM SFP (small form-factor pluggable) transceiver is really a compact optical transceiver used in optical communications for both telecommunication and data communications applications on the wavelength. CWDM SFP are used to link the ports to the fiber optic network, typical CWDM SFP like Cisco’s could support both Gigabit Ethernet and Fiber Channel. CWDM SFP transceiver modules make use of the SFP interface for connecting the equipment and use dual LC PC fiber connector interface for connecting the optical network. FiberStore CWDM SFP transceivers can be found with a variety of different transmitter and receiver types, allowing users to decide on the appropriate transceiver for each link to provide the required optical reach over the available optical fiber.

Second SFP Module Types: DWDM SFP

The Dense Wavelength-Division Multiplexing (DWDM) transceivers offer DWDM transport with dramatically lower power and cost in a standard pluggable SFP package. Fiberstore DWDM SFP is available in all 100 GHz C/L-band wavelengths on the DWDM ITU grid. As multirate interfaces they support any protocol from 100 Mbps to 4.25 Gbps. The modules meet the requirements of the IEEE802.3 Gigabit Ethernet standard and ANSI Fiber Channel specifications, they are suitable for interconnections in Gigabit Ethernet and Fiber Channel environments. The DWDM SFP is designed to accept DWDM SONET/SDH (with or without FEC) for 200km links and Ethernet/Fiber Channel protocol traffic for 80km links.

Third SFP Module Types: 10G SFP

The 10G SFP Transceiver Modules refers to 10G SFP Plus Transceivers,someone know that the sfp+ is an enhanced version of the SFP that supports data rates up to 10 Gbit/s. Several standards for 10G SFP has been released, 10GBase-SR is for OM3 multimode optical fiber, relevant SFP plus working distance 300 meters max, 10GBase-LR is for single mode optical fiber, relevant SFP plus working distance 10km, 10GBase-LRM is for FDDI multimode fiber, the SFP plus working distance 220 meters.

Want to know more SFP Module Types, pls visit fs.com, We will continue to update fiber optic transceiver information.Our optical transceivers are backed by a lifetime warranty, and you can buy with confidence. We also can customize optical transceivers to fit your specific requirements.

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