Explore the difference between SFP and SFP+ transceivers to learn which one is most compatible with your applications.

How are SFP Transceivers Different From SFP+

SFP modules look fairly similar to the SFP+ modules. Both are common types of transceivers used to connect network devices or switches to fiber and copper cables. They are more commonly used to add fiber ports.

Since switches usually support both SFP and SFP+ modules, knowing the difference between both can be the key to choosing the right type of transceiver. The choice between SFP vs. SFP+ primarily depends on the application, cable type, desired data transmission rate, and required network optical range. Keep reading to explore SFP vs. SFP+ in greater detail in this guide by experts at Fibermart, an exclusive online store with an array of fiber optic products for sale. 

What is an SFP?

Replacing the Gigabit Interface Converter (GBIC), Small Form Factor Pluggable, or SFP, refers to a hot-swappable, compact transceiver designed to support SONET, Fiber Channel, and 100/1000 Mbps, among other standards of network communications.

Also known as Mini-GBIC, SFP transceivers are commonly used in data communication and telecommunication applications. These ports are commonly found in firewalls, NIC cards, routers, Ethernet switches, and a range of other devices. They enable the switch to connect to cables of different speeds and types.

SFP vs. SFP+

SFP and SFP+ are both transceivers that are virtually identical in appearance and size. The fundamental difference is that SFP+ is an updated version supporting higher speeds of up to 10 Gbps. The difference is transmission difference also accounts for the data rate difference, with SFP typically boasting a longer transmission distance.

In terms of compatibility, SFP+ ports usually accept SFP optics but at a lower speed, i.e., 1 Gbps. An SFP+ transceiver, however, shouldn't be plugged into an SFP port since the former doesn't support speeds below 1 Gbps.

SFP and SFP+ both have similar appearance and size. However, SFP+ is generally more costly than SFP. The primary difference, therefore, lies in the fact that SFP is used for 1000 Base or 100Bse applications, while SFP+ is better suited for Gigabit Ethernet applications.

Since SFP doesn't support a 10 Gbps data transmission rate, it can't be used in the same network. But SFP+ uses the same dimensions for pluggable transceivers in the 8.5 Gbps fiber channel and 10 Gbps Ethernet with SFP. SFP+ complies with SFF-8431 standards, while SFP is based on SFF-8472 and IEEE802.

Choosing Transceivers: SFP Vs. SFP+

Transceivers are available in different types depending on what they'll be used for. You can find, for example, multimode and single-mode SFP. The latter work with single-mode fibers, and the former is more compatible with multimode fibers.

 Meanwhile, simplex and multiplex WDM SFP transceivers are also available for multiplexing and single-fiber applications. PON SFP for fiber-based access networks and video SFP for transmitting high-definition videos.

SFPs are available in extended operating temperatures and commercial ranges, with and without extended diagnostic capabilities. The technology demonstrates the capability to evolve with increasing demands, showing a potential to evolve continually to support higher rates.

You can buy SFP and SFP+ to mix and match components from different vendors. Since some manufacturers sell devices supporting a single vendor-specific SFP, reach out to discuss the varieties available at Fibermart. We can provide you with the compatibility information and optics testing report to ensure compatibility.

Call (205)-282-9089 to speak to our industry experts. All our premium quality fiber optic solutions meet and exceed all compliance and industry standards. You can also request OEM and customized products!