Email Us
+86 027-87887588
+86 18971538004

Understanding Different Types of 10G SFP+ Modules


What is an SFP+ Module?

An SFP+ module (Small Form-Factor Pluggable Plus) is a compact, hot-pluggable network interface device used for both telecommunication and data communications applications. It is an enhanced version of the SFP (Small Form-Factor Pluggable) transceiver, supporting data rates up to 10 Gbps. SFP+ modules are essential components in high-speed network infrastructures, facilitating the connection between switches, routers, and other network devices. They support various communication standards, enabling them to function over different distances and fiber types.

SFP+ Module Classification

SFP+ modules are classified based on their transmission capabilities and the type of fiber they support. The primary classifications include:





Each type is designed to meet specific networking requirements in terms of distance and fiber compatibility.


The 10GBase-SR (Short Range) is a type of SFP+ module optimized for short-distance communication.10GBase-SR operates over multimode fiber (MMF) and can achieve distances up to 300 meters on OM3 MMF and up to 400 meters on OM4 MMF. It is commonly used in data centers and enterprise networks for interconnecting devices within the same building.


The 10GBase-LR (Long Range) SFP+ module is designed for longer-distance data transmission.

10GBase-LR operates over single-mode fiber (SMF) and can transmit data up to 10 kilometers. 10G LR SFP is suitable for connecting devices across campus networks or between buildings within an organization.


The 10GBase-ER (Extended Range) SFP+ module supports even greater transmission distances.

Operating over single-mode fiber, the 10GBase-ER can cover distances up to 40 kilometers. This module is ideal for metropolitan area networks (MANs) and long-haul data transmission applications.

10GBase-ZR: 10GBase-ZR

The 10GBase-ZR (Ultra-Extended Range) module is designed for the longest-distance transmissions.

10GBase-ZR operates over single-mode fiber and can achieve distances up to 80 kilometers. It is primarily used in carrier networks and large-scale enterprise networks that require long-distance connectivity.

Factors to Consider When Choosing 10G SFP+ Modules

Selecting the appropriate 10G SFP+ module depends on various factors:

Distance Requirements: Choose a module that supports the distance between your networking devices.

Fiber Type: Ensure compatibility with either single-mode or multimode fiber, depending on your infrastructure.

Network Environment: Consider the physical environment and potential signal interference.

Cost: Evaluate the cost-effectiveness based on your budget and the module's performance.

Compatibility: Verify that the module is compatible with your existing network equipment.


Understanding the different types of 10G SFP+ modules is crucial for designing and maintaining an efficient high-speed network. By considering factors such as distance, fiber type, and compatibility, you can select the right module to meet your network requirements. Whether it's the short-range 10GBase-SR for data centers or the ultra-extended range 10GBase-ZR for metropolitan networks, each module type has its specific use case, ensuring reliable and high-performance connectivity.


Is 10GBase-LR Single-Mode or Multi-Mode?

10GBase-LR is designed for single-mode fiber (SMF), providing long-distance connectivity up to 10 kilometers.

Are SFP+ Modules Universal?

While SFP+ modules are designed to be hot-pluggable and interoperable, not all modules are universal. Compatibility issues can arise due to variations in manufacturer specifications and firmware. It is essential to ensure that the SFP+ module is compatible with the specific brand and model of your network devices.

What is the Purpose of the SFP+ Port?

An SFP+ port on a network device allows for the insertion of SFP+ modules, enabling flexible network connections over fiber or copper cabling. These ports facilitate high-speed data transmission and are commonly found on switches, routers, and network interface cards (NICs).

What is the Difference Between SR Module and LR Module?

The primary difference between 10GBase-SR and 10GBase-LR modules lies in their operational range and the type of fiber they use:

10GBase-SR: Short-range, operates over multimode fiber (MMF), with a maximum distance of 300-400 meters.

10GBase-LR: Long-range, operates over single-mode fiber (SMF), with a maximum distance of 10 kilometers.

What is the Difference Between SFP 10G ER and SFP 10G ZR?

Both SFP 10G ER and SFP 10G ZR modules are designed for long-distance communication but differ in their maximum transmission ranges:

SFP 10G ER: Extended range, supports distances up to 40 kilometers over single-mode fiber.

SFP 10G ZR: Ultra-extended range, supports distances up to 80 kilometers over single-mode fiber.

Gearlink Optical Transceiver
Get in touch with WHGearlink Optical Transceiver Experts to get professional support and helps within 24 hours.
Talk to Us
No.1120, Building 12, Changhang Lanjing International, Hongshan district, Wuhan city, Hubei province, China, 430000.
+86 027-87887588