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SFP MODULES

( number of products: 320 )

SFP Modules and Transceivers – Fast and Flexible Fiber Optic Connectivity

Optical modules, commonly known as SFP (Small Form-factor Pluggable) modules or transceivers, are essential components of modern networking infrastructure. They enable standard ports in switches, routers, and network interface cards to be instantly transformed into flexible interfaces supporting fiber optic or copper-based data transmission.

At Esus IT, we offer a complete range of optical modules supporting SFP (1 Gb/s), SFP+ (10 Gb/s), SFP28 (25 Gb/s), QSFP+ (40 Gb/s), and QSFP28 (100 Gb/s) standards. We provide solutions that are fully compatible with equipment from leading brands such as Cisco, HP/HPE, Dell, Ubiquiti, MikroTik, Intel, and Mellanox, ensuring reliable and stable operation of your network infrastructure.

Most Popular Types of SFP Modules Available at Esus IT

Depending on your cabling technology and the distance over which data must be transmitted, our product range includes:

  • MultiMode (MM) Modules: Designed for short-distance data transmission, typically up to 300–550 meters. Ideal for connecting servers to switches within the same data center or between different floors of a building. These modules commonly operate at an 850 nm wavelength.
  • SingleMode (SM) Modules: Intended for long-distance transmission, ranging from 10 km and 20 km to 80 km or more. Commonly used to connect remote company locations and within carrier-grade networks, utilizing wavelengths of 1310 nm or 1550 nm.
  • BiDi (WDM) Single-Fiber Modules: Innovative transceivers that allow simultaneous transmission (TX) and reception (RX) of data over a single fiber strand by using two different wavelengths (e.g., 1310/1550 nm). This can significantly reduce the cost of deploying or leasing fiber optic infrastructure.
  • SFP RJ45 (Copper) Modules: Enable an optical SFP port to function as a standard RJ45 Ethernet port, making them extremely useful for quick network reconfigurations and migrations.

Compatibility Without Compromise

Many networking equipment manufacturers, such as Cisco and HP, implement vendor restrictions that prevent the use of generic optical modules. At Esus IT, we understand these requirements. That is why we offer dedicated and vendor-programmed transceivers tailored to specific brands. Our modules are correctly recognized by switch operating systems, generate no warning messages in system logs, and deliver the same transmission performance as significantly more expensive original components.

FAQ – Optical Modules and SFP Transceivers

1. What is the difference between an SFP and an SFP+ module?

The main difference is bandwidth. Standard SFP modules support speeds of up to 1 Gb/s, while SFP+ modules—despite having the same physical dimensions—are designed for 10 Gb/s networking applications.

2. Can I insert an SFP+ module into an SFP port on a switch?

Generally, no. Traditional SFP ports are not designed to support the higher operating frequencies required by SFP+ modules. Conversely, using a 1G SFP module in a 10G SFP+ port is often possible, provided that the switch software allows the port speed to be manually configured to a lower rate.

3. What is the DOM/DDM feature in an optical module specification?

DDM (Digital Diagnostic Monitoring), also known as DOM (Digital Optical Monitoring), is a diagnostic technology that enables administrators to remotely monitor key operating parameters of a module in real time. This includes module temperature, supply voltage, and, most importantly, transmitted and received optical signal power, making fiber troubleshooting much easier.

4. Which optical connectors are used in SFP modules?

The vast majority of SFP and SFP+ modules use compact LC connectors (Duplex for standard modules and Simplex for BiDi versions). Older GBIC modules and certain specialized devices may use SC connectors, but LC has become the industry-standard connector type for modern SFP applications.

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