SFP-10G-LR vs SR：What's the difference?

The difference between SFP-10G-LR and SFP-10G-SR modules lies in their range, the type of fiber they use, and their applications:

1. SFP-10G-SR:

   • "SR"stands for Short Range.

   • Typically used for short-distance data transmission.

   • Works with multimode fiber(MMF).

   • Supports distances up to about 300 meters.

   • Operates at a wavelength of 850 nm.

   • Commonly used in intra-building connectionsin data centers and enterprise networks.

2. SFP-10G-LR:

   • "LR"stands for Long Range.

   • Designed for long-distance data transmission.

   • Compatible with single-mode fiber(SMF).

   • Can support distances up to about 10 kilometers.

   • Operates at a wavelength of 1310 nm.

   • Suited for longer-distance connectionssuch as between different buildings or campus locations.

10G stands for its maximum transmission rate of 10.3 Gbps. It is suitable for 10 Gigabit Ethernet. 10G optical networks have become popular in telecommunication networks. 10G switches are also being used by more and more people.

SR and LR represent the transmission distance of the optical module. SR, LR, LRM, ER and ZR are more common in the 10G IEEE standard. The transmission distance they represent is from short to long. You can check it by the following table.

Comparison of appearance

Let us first look at the appearance of the SFP-10G-LR-S optical module and the SFP-10G-SR-S optical module. They are packaged in the form of SFP+ and can be plugged into the SFP+ port of the switch and are also hot-pluggable. The overall size is also the same. Because of different manufacturers, there are differences in the label position and interface design of the two optical modules, but the components are the same and there is no difference between them.

In summary, SFP-10G-SR is ideal for short-distance, high-speed connections using multimode fiber within a single building or data center. In contrast, SFP-10G-LR is designed for long-distance connections using single-mode fiber, suitable for connecting different sites or buildings over a greater distance.
 

What do SFP-10G-LR and SFP-10G-SR represent respectively?

What is SFP-10G-SR?

The SFP-10G-SR is a 10GBase-SR SFP+ module that offers customers a range of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closets and service provider transport applications. The module has many features and benefits, including the industry’s smallest form factor, the highest density of each chassis. These modules are also hot-swappable and can be easily switched. These modules also feature digital optical monitoring (DOM) to monitor signal strength, SFP temperature, and transceiver voltage. The SFP-10G-SR module supports links up to 300 meters in multimode OM3 fiber.

The SFP-10G-SR is a specific type of transceiver module used in network communications. Here are the key details about it:

1. Type: SFP-10G-SR is a transceiver module that follows the Small Form-Factor Pluggable (SFP) standard, specifically designed for 10 Gigabit Ethernet (10GbE) applications.

2. Speed and Application: It supports a data rate of 10 Gbps, making it suitable for high-speed networking tasks, particularly in enterprise and data center environments.

3. Range and Fiber Type: "SR" stands for Short Range. This module is designed for short-distance data transmission, typically up to 300 meters. It is commonly used with multimode fiber optic cables.

4. Wavelength: The SFP-10G-SR operates at a wavelength of 850 nm (nanometers).

5. Connector Type: It generally uses an LC duplex connector, common in fiber optic technology.

6. Usage: This module is widely used in local area network (LAN) environments, data centers, and high-speed storage area networks (SANs) for short-reach applications.

7. Compatibility: It is designed to be compatible with various networking equipment, including switches, routers, and network interface cards that have 10G SFP+ ports.

The SFP-10G-SR is a popular choice for organizations that require fast data transfer over short distances, like within the same building or campus.

 

What is SFP-10G-LR?

The SFP-10G-LR is a 10GBase-LR SFP+ module that offers customers with a variety of 10 Gigabit Ethernet connectivity options for data center, enterprise wiring closets and service provider transport applications. The SFP-10G-LR module supports 10 km of link length on standard single-mode fiber (SMF, G.652).

The SFP-10G-LR is a specific type of transceiver module used in network communications. Here are the key details about it:

1. Type: SFP-10G-LR is a transceiver module following the Small Form-Factor Pluggable (SFP) standard, specifically designed for 10 Gigabit Ethernet (10GbE) applications.

2. Speed and Application: It supports a data rate of 10 Gbps, making it suitable for high-speed networking tasks in enterprise and data center environments.

3. Range and Fiber Type: "LR" stands for Long Range. This module is designed for longer distance data transmission, typically up to 10 kilometers (about 6.2 miles). It is commonly used with single-mode fiber optic cables.

4. Wavelength: The SFP-10G-LR operates at a wavelength of 1310 nm (nanometers).

5. Connector Type: It usually uses an LC duplex connector, which is standard in fiber optic technology.

6. Usage: This module is widely used in metropolitan area network (MAN) environments and larger data centers, or in situations where the networking equipment is spread across different buildings or locations within a city.

7. Compatibility: It is designed to be compatible with a variety of networking equipment, such as switches, routers, and network interface cards, that have 10G SFP+ ports.

The SFP-10G-LR is ideal for organizations that need to transmit data over longer distances, like between buildings in a campus or city-wide network infrastructure.

 

Precautions for purchasing sfp 10g lr and sfp 10g sr:

When purchasing SFP-10G-LR and SFP-10G-SR transceiver modules, there are several important factors and precautions to consider to ensure compatibility and optimal performance in your network setup:

1. Compatibility with Network Devices: Ensure that the SFP modules you purchase are compatible with your existing network equipment, such as switches, routers, and network interface cards. Check the manufacturer’s specifications or consult with the vendor.

2. Distance and Fiber Type:

   • For SFP-10G-SR, designed for Short Range, the typical maximum transmission distance is up to 300 meters over multi-mode fiber.

   • For SFP-10G-LR, designed for Long Range, the typical transmission distance is up to 10 kilometers over single-mode fiber. Make sure to choose the module that suits your network’s distance requirements.

3. Wavelength:

   • SFP-10G-SR modules usually operate at a wavelength of 850 nm.

   • SFP-10G-LR modules typically operate at 1310 nm. Ensure that the wavelength matches your network design and fiber type.

4. Cable Type: Use the appropriate type of optical fiber cable – multi-mode for SFP-10G-SR and single-mode for SFP-10G-LR.

5. Connector Type: Both modules typically use LC duplex connectors. Ensure that your fiber cables have the correct connector type.

6. Quality and Reliability: Purchase from a reputable supplier to ensure that you get high-quality, reliable modules that meet industry standards.

7. Data Rate: Both modules support a data rate of 10 Gbps. Ensure that this matches your network requirements.

8. Vendor Lock-in: Some network equipment manufacturers implement vendor lock-in that restricts the use of third-party SFP modules. Check if your equipment requires modules from the same manufacturer or if it supports third-party modules.

9. Warranty and Support: Consider the warranty and customer support offered by the vendor. It's beneficial to have good support for troubleshooting and replacements, if necessary.

10. Budget Considerations: While budget is an important consideration, it's crucial not to compromise on quality. Cheaper, low-quality modules can lead to network performance issues.

11. Regulatory Compliance: Ensure that the modules comply with necessary regulatory standards and certifications.

12. Power Consumption: Check the power consumption specifications of the SFP modules, as it can impact the overall power usage of your networking equipment.

By keeping these factors in mind, you can make an informed decision when purchasing SFP-10G-LR and SFP-10G-SR modules for your network.