The insatiable demand for higher bandwidth, driven by cloud computing, AI workloads, and 5G backhaul, has made 25G Ethernet a cornerstone of modern data centers. At the heart of any 25G deployment is the optical transceiver, and for short-reach applications, the SFP28-25G-ESR is a prevalent and powerful solution.
If you're an network architect, engineer, or IT manager, understanding this specific module is key to optimizing your infrastructure. Let's break down everything you need to know.
📝 Key Takeaways
The SFP28-25G-ESR is a fast optical transceiver. It supports 25 Gigabit Ethernet. It can send data up to 300 meters. It uses multimode fiber for this.
It works with many network brands. It fits in new equipment. It also fits in older equipment. This makes upgrades easy. It also saves money.
The module uses Clock Data Recovery (CDR) technology. This keeps data signals clear. It keeps them steady. It helps reduce errors. It lowers network downtime.
Its hot-pluggable design allows quick installation. You can replace it fast. You do not need to turn off devices. This saves time. It also saves effort.
Choosing SFP28-25G-ESR helps networks grow. It helps them stay ready for future needs.
📝 What is an SFP28-25G-ESR?
The SFP28-25G-ESR is a hot-pluggable, 25G optical transceiver in the SFP28 (Small Form-Factor Pluggable 28) form factor. The acronym decodes as:
SFP28: Form factor supporting 25 gigabits per second.
25G: Data rate of 25Gbps.
ESR: Extended Short Reach, a MSA (Multi-Source Agreement) standard for optical interfaces.
It is designed primarily for short-range connections over OM4 multimode fiber (MMF), making it ideal for interconnecting switches within the same rack or across adjacent racks in a data center.
📝 Key Specifications and Applications
The SFP28-25G-ESR is defined by a clear set of parameters that dictate its use cases.
Feature | Specification | Use Case Implication |
|---|---|---|
Data Rate | 25.78125 Gbps (NRZ) | Supports single-lane 25 Gigabit Ethernet. |
Wavelength | 850nm (VCSEL laser) | Standard for multimode fiber optics. |
Fiber Type | Multimode Fiber (MMF) | Uses cost-effective OM3 or OM4 fiber cables. |
Max Reach | 300 meters on OM3 | Ideal for intra-data center links (ToR/EoR). |
Connector | Duplex LC | Industry-standard, easy to deploy. |
Digital Diagnostic Monitoring (DDM) | Yes (DOM) | Real-time monitoring of temperature, voltage, TX/RX power. |
Its primary application is in Leaf-Spine data center architectures, connecting top-of-rack (ToR) leaf switches to end-of-row (EoR) or spine switches. It's a perfect fit for:
25G SFP28 server connectivity
Data center interconnects (DCI)
High-performance computing (HPC) clusters
Enterprise network upgrades
📝 Why Choose the SFP28-25G-ESR? Advantages Over Other Options
Cost-Effectiveness: Compared to single-mode alternatives like the 25G LR, the ESR leverages VCSEL lasers and MMF, which significantly reduces the total cost of ownership ( optics, patch cables, and transceivers).
Power Efficiency: SFP28 modules are designed for low power consumption, typically under 1W, which is crucial for high-density switch configurations.
Density and Scalability: The SFP28 form factor allows for high port density on a single switch, enabling seamless scaling of 25G networks.
Standardization & Compatibility: As an MSA-compliant module, it ensures interoperability with equipment from major switch vendors like Cisco, Arista, Juniper, and others.
SFP28-25G-ESR vs. SFP28-25G-SR: What's the Difference?
You might also encounter the SFP28-25G-SR module. The key difference lies in the reach:
SR (Short Reach): Typically supports up to 100 meters on OM4 fiber.
ESR (Extended Short Reach): Extends the reach to 400 meters on OM4 fiber.
The ESR variant provides greater flexibility for data center design without needing to step up to a more expensive long-range module.
📝 Introducing the LINK-PP SFP28-25G-ESR: Reliability Meets Performance
When selecting a transceiver, quality and compatibility are non-negotiable. This is where LINK-PP excels. The LINK-PP LS-MM8525-S3C optical module is engineered to the highest standards, offering 100% MSA compliance and rigorous testing for flawless performance.
✅ Full Vendor Compatibility: Certified to work seamlessly with major networking brands.
✅ Rigorous Quality Assurance: Each module undergoes extensive testing to ensure longevity and reliability, reducing the risk of network downtime.
✅ Advanced DDM Support: Provides accurate real-time data for proactive network monitoring and troubleshooting.
✅ Lifetime Warranty & Support: Backed by exceptional customer service, giving you peace of mind.
Choosing a high-quality 25G SFP28 module like the one from LINK-PP is essential for maintaining a robust and low-latency network infrastructure. It's a cost-effective 25G connectivity solution without compromising on performance or reliability.
📝 Conclusion: Power Your 25G Network with Confidence
The SFP28-25G-ESR is a fundamental building block for efficient, high-speed 25G networks. Its blend of performance, reach, and cost-effectiveness makes it an unbeatable choice for short-reach data center links.
By opting for a reputable brand like LINK-PP, you ensure maximum compatibility, reliability, and value for your investment.
📞 Ready to upgrade your network infrastructure? 🚀
Explore our high-performance LINK-PP LS-MM8525-S3C modules and experience the difference quality makes. Browse our catalog of compatible 25G optical transceivers today to find the perfect solution for your needs and ensure your network is built for the future.
➡️ [Source LINK-PP 25G Transceivers Now]
📝 FAQ
What does SFP28-25G-ESR stand for?
SFP28-25G-ESR means Small Form-factor Pluggable 28, 25 Gigabit, Extended Short Reach. This module lets you use 25G Ethernet over multimode fiber. It can send data up to 300 meters.
What devices use SFP28-25G-ESR modules?
Network switches, routers, and storage devices use these modules. Brands like Cisco, Dell, and HPE support them. Many data centers and big networks use them for fast connections.
What fiber cables work with SFP28-25G-ESR?
This module works with OM3 or OM4 multimode fiber cables. It uses a duplex LC/UPC connector. This makes setup easy and keeps the connection strong.
What makes SFP28-25G-ESR different from standard SR modules?
The sfp28-25g-esr can send data farther than standard SR modules. It reaches up to 300 meters. It also has CDR technology for better signal quality at fast speeds.
What should users check before installing SFP28-25G-ESR?
Users need to make sure their device works with the module. They should also check if they have the right fiber cable. Looking at the module’s specs helps stop problems and keeps the network running.
