Why Do People Still Use Copper SFP Transceivers?


Electric sfp Introduction

In the age of fiber optics and lightning-fast data transfer, it might come as a surprise that copper SFP (Small Form-factor Pluggable) transceivers are still widely used. In this blog post, we will discuss why copper SFPs continue to hold their ground in the networking world, as well as their advantages and disadvantages compared to their optical counterparts. We will also help you understand how to choose the right copper SFP for your needs.

What is Copper SFP?

Copper SFPs are transceiver modules that support data transmission over copper cables, such as Cat5e or Cat6, using RJ45 connectors. They are commonly used in applications where short distances and lower costs are priorities, like data centers and local area networks (LANs). Two popular copper SFP options are SFP-10G-T (10 Gigabit Ethernet) and 1000BASE-T (1 Gigabit Ethernet), while other notable variants include SFP-10G-T-S, SFP-1G-T, and QSFPTEK transceivers.

SFP+ RJ45 copper

How Does the RJ45 SFP Transceiver Work?

An RJ45 SFP transceiver is a hot-swappable module that plugs into the SFP port of a network device, such as a switch or router. The transceiver receives electrical signals from the device and converts them into a format suitable for transmission over copper cables. On the receiving end, another transceiver converts the signals back into electrical form, allowing the data to be interpreted by the receiving device.

These transceivers support various data rates and standards, such as 1000BASE-T (1 Gigabit Ethernet) and 10GBASE-T (10 Gigabit Ethernet), and are compatible with a wide range of network devices. The use of copper cables with RJ45 connectors makes copper SFPs an attractive choice for short-range applications, as they are cost-effective and easy to install.

What is the Difference Between Optic SFP and Copper SFP?

Optical SFPs and copper SFPs both serve the same purpose: to facilitate data transmission between network devices. However, they differ in their underlying technology and the types of cables they use. Here are the main differences between the two:

  1. Transmission Medium: Optical SFPs use fiber optic cables for data transmission, while copper SFPs use copper cables.
  2. Distance: Optical SFPs can transmit data over much longer distances than copper SFPs, often spanning several kilometers, while copper SFPs are limited to shorter distances, typically around 100 meters.
  3. Data Rate: Both types of SFPs support a range of data rates, but optical SFPs generally offer higher speeds than copper SFPs.
  4. Cost: Copper SFPs and their associated cabling are typically less expensive than optical SFPs and fiber optic cables, making them more attractive for short-range applications.
  5. Signal Interference: Copper cables are more susceptible to electromagnetic interference (EMI) and signal degradation compared to fiber optic cables, which can lead to reduced performance over longer distances.

How to Choose Copper SFP and SFP+?

When choosing a copper SFP or SFP+ transceiver, consider the following factors:

  1. Compatibility: Ensure that the transceiver is compatible with your network devices and supports the desired data rate and Ethernet standard.
  2. Distance: Determine the maximum distance between your network devices and choose a copper SFP with a range that meets your requirements. Remember that copper SFPs are best suited for short-range applications.
  3. Data Rate: Select a copper SFP that supports the required data rate,such as 1 Gigabit Ethernet (1000BASE-T) or 10 Gigabit Ethernet (SFP-10G-T).
  1. Cable Type: Choose a copper SFP that is compatible with the type of copper cable you will be using, such as Cat5e or Cat6.
  2. Vendor: Opt for a reputable vendor, like QSFPTEK, that offers high-quality transceivers and provides good customer support.
  3. Budget: Copper SFPs are generally more cost-effective than optical SFPs, but prices can still vary. Consider your budget when selecting a copper SFP, but don’t compromise on quality for the sake of saving a few dollars.
  4. Power Consumption: Copper SFPs typically consume more power than optical SFPs, so factor in power consumption when making your choice.


Copper SFP transceivers continue to be popular due to their cost-effectiveness, ease of installation, and compatibility with a wide range of network devices. When choosing a copper SFP or SFP+, be sure to consider compatibility, distance, data rate, cable type, vendor, budget, and power consumption. By carefully weighing these factors and selecting the right copper SFP for your needs, you can build a reliable and cost-effective network solution that meets your requirements.

6 Sfp Transceiver Facts You Should Know

 When you hear the name SFP transceiver, you might think that you know everything about it. Only experienced professionals know everything there is to know about these often-overlooked devices. The sfp optical module, or miniGBIC, has many iterations. Each version has traits that make it unique. Let’s now break down the SFP optical transceiver.

1. Sfp transceiver: What Is It?

The small form-factor pluggable (SFP) transceiver is a small device that converts computer data from one form to another for transmission. The 1g SFP transceiver is attached to devices such as network switches, network interface cards (NICs), and routers. The tail end of an sfp optical module joins a copper or optical fiber cable. The SFP transceiver is hot-pluggable thanks to the design of gigabit sfp ports.


Types of sfp transceivers include SFP, QSFP, SFP+, and QSFP+.Due to the different standards met by SFP connectors, you can make a robust network with them. An SFP transceiver, being hot-pluggable, can be upgraded quickly and on the fly. SFP modules support single-mode or multi-mode cables, and they can transmit data up to 80 kilometers. Furthermore, the sfp optical transceiver has bandwidths ranging from 10 megabits per second to 40 gigabits per second.

2. SFP module Differences

The market has a plethora of SFP modules, making it hard to select the best one. If you want to choose the ideal sfp transceiver, you must first define your objectives. The best sfp optical transceiver for one person might be of little to no use for another person. Regardless of the person looking to buy an sfp transceiver, the choice becomes simpler by looking at the specifications they need.

Sfp Transceiver Transmission Distance

The first class of SFP modules, according to distance, is short-range (sr) SFP modules. The other class is long-range sfp. Short-range sfp modules use multi-mode fiber cables to transmit data. A normal short-range SFP sends data up to 500 meters, while an extended SFP supports a 2-kilometer distance.

A long-range SFP transceiver can be standard or extended. It sends data between 10 and 80 kilometers over a single-mode fiber cable.

sfp data transmission distance

Sfp Transceiver Bandwidth

Your preferred sfp transceiver should be faster than your required speed. The data transfer limit of SFP modules ranges between 10 megabits per second and a gigabit per second. The SFP+ transceiver has a bandwidth of 10 Gbps. Additionally, QSFP+ can reach up to 40 Gbps. If you provide more headroom on your network, you don’t have to upgrade it for years.

sfp data rate capabilities

The SFP Transceiver cable type

An SFP transceiver can use copper or fiber optic cables. How you have arranged your servers will determine the type of cables you require. If your racks are a short distance apart, you can choose copper cables. However, if the racks are more than 15 meters apart, your only choice is optical cables. Optical cables are cheaper than copper cables which makes them the only option for long-distance connections.

If your racks have many wires, you should use copper cables because they are easier to bend without damage.

Copper cables are not preferable for networks where data loss is unacceptable. An SFP transceiver with copper cables can be inefficient if there is electromagnetic interference. Optical cables, however, are not affected by electromagnetic interference. They are therefore suitable for mission-critical data networks.

3. SFP fiber optics and Direct Attach Cable

A Direct Attach Cable (DAC) is a Twinaxial cable that has transceivers attached on both ends. You cannot detach the SFP transceiver at the end of this type of cable. Transmitting data over short distances in a server room requires the use of DACs. The main benefit of a DAC cable is that you do not need to use separate transceivers and cables. You need less money to buy DACs, and it also costs less to maintain them.

A DAC supports plug-and-play just like the SFP transceiver. The DAC also consumes less energy compared to standalone optical modules.

sfp dac cable

4. The Question Of Compatibility

Before you buy an SFP transceiver, you should find out if it works with your devices. The problem with compatibility is that not all sfp manufacturers make switches and other host devices. How do you make sure that an SFP optical module will work with your host devices? The only way to be safe is to buy compatible modules from manufacturers like QSFPTEK.

Many people find that the Cisco sfp price exceeds their available budget. These people turn to third-party sfp manufacturers to buy optical modules. It is an excellent decision because third-party manufacturers such as QSFPTEK supply compatible SFP transceiver modules. These modules work with multiple host devices regardless of the OEM.

5. Standards Supported By An SFP optical module

Optical transceivers support multiple standards. The Multi-Source Agreement, commonly known as MSA, is the most common for third-party optical modules. The standard ensures that an SFP transceiver supports host devices of many different OEMs. Devices that conform to the MSA standard work with devices from other sfp manufacturers bearing the same certification.

Standards such as the MSA ensure cross-compatibility of optical modules. They also make it easier for manufacturers to develop products quickly. It is because the MSA specifies many electrical and mechanical parameters, so companies can know what works. That saves a lot of time and money in R&d.




QSFPTEK is one of the top high-tech companies that provide innovative telecom services to its customers. QSFPTEK is a certified company that offers high-quality technical products that are well developed which have passed through multiple processes to ensure that they are well produced. QSFPTEK ensures it gives 100 % feedback to its customers and keeps constant contact with them with knowledgeable, highly skilled expertise. The dedicated team is in the progress of meeting the customer’s expectations. QSFPTEK delivers its services to customers worldwide through free shipping, and all of their telecom solutions have a warranty assurance. Through the help of our team, who works at our factory using the latest technologies and quality laboratory, we have successfully managed to satisfy thousands of our customers with the required optical products at an affordable price since we always put our customers to be the center of our focus.

QSFPTEK’s warehouse

Products that QSFPTEK offers

Having successfully looked at what is QSFPTEK lets us know some of the products that our QSFPTEK company offers to our customers. After looking at these products, we will then discuss some of the modules that QSFPTEK manufactures. QSFPTEK company offers media converters, mux, optic cables, demux, and fiber, ensuring that they fully meet your expectations by serving as your telecom solutions.

We produce media converters used in data centers, healthcare services, telecom places, and other sites. QSFPTEK media converters are of high quality and are made by skilled, dedicated expertise, and they ensure before delivering, they are tested; therefore, if you are looking for media best media converters to put together a network and you need product help, feel free and contact our QSFPTEK team or visit our website that I will earnestly provide at the end of this article.

The transceiver QSFPTEK offers

Modules that QSFPTEK company offers

Some of the modules that QSFPTEK produces are SFP, COPPER SFP,40G Transceiver, GBIC, SFP BIDII, XENPAK, neo photonics, WTD, and other 100 plus optical modules that are issued with a warranty of 3 years in case of any quality-related issue. Currently, at our factory, we have managed to produce QSFPTEK QT- SFP 10G-T module.

In this article, we will look at three modules: SFP, copper SFP, and the current module, the QT-SFP 10G-T module.


Before we briefly describe SFPs transceivers, let us first know what this acronym stands for. SFPs mean small form-factor, and these transceivers are network equipment’s break the confusion between SFP transceivers SFP module, it is worth noting that they are the same. To mention, their descriptions are small, have transmitters, and are hot-pluggable. One can use these transceivers from our QSFPTEK company for network applications either individually or in the industry. The power dissipation of these transceivers is low and can support various types of cables. These SFPs can be installed in the network system without a need of either shutting them down or restarting because of their nature of being hot-pluggable. To know which type of SFPs transceiver is the best for you, first, you have to know the different categories of these modules. They are categorized into the application, cable type, transfer rate, transmission range, and the reliable connection between any two devices.

Relative link: Are Modern Third-Party SFP 10g lr Transceivers As Good As Their OEM Counterparts?

Copper SFP

QSFPTEK manufactures copper SFP. Copper SFP in our industry is under the small form- pluggable. This copper SFP module can cover a max cable distance of about 100m. Therefore, these modules from Copper SFPs are best at short-range applications. However, Copper SFPs transceivers are costly. This module is used in hot plugging applications. Copper SFP from QSFPTEK company is produced in a way that contributes to high performance, has a compact design feature, and consumes low power. It is quite essential to note that QSFPTEK company produces copper SFP modules of different speed rates. If you have any inquiries concerning our Copper SFP modules, kindly contact us, and you will be given 100% feedback.


This is our latest series from our QSFPTEK company. This module is less costly and has made as to be highly competitive in this industry. The overview of this module is that it is delivered by our company in a branded white box only. Outside its box, you can discover some CE and FCC markings. At the back of the white branded box, you will see the factory where this module was manufactured. The modules come with nice labels that are easier to identify.

Why choose QSFPTEK company

As a way of conclusion, it is affirmatively to note why our QSFPTEK company is the best compared to others in this industry of high-tech solutions. One of the most competitive advantages that we as QSFPTEK are proud of is the availability of a large factory which has all necessities needed in this industry factory further has a modern laboratory that helps us to test all the products that we produce in a line of ensuring that they are of high quality. Besides this, our QSFPTEK company has knowledgeable, professionally skilled, and dedicated experts who have over ten years of experience in this industry and are well equipped with all the latest tools required to produce Telcom solutions. In this way, we have managed to meet the expectations of thousands of our customers globally.

We distribute our services through free shipping, and our products must first pass-through testing before we deliver. Upon delivery, we issue a three years warranty to our customers for product quality issues. QSFPTEK costs are lower because we have orders of high volume as well as mass production. Some of the resumes we get from our customers are good because we always make sure we serve them according to their will, which has made QSFPTEK company remain competitive and top-notch compared to others. These are why we should choose our company, and we will meet all your interest in Telcom solutions.

For more about our QSFPTEK, you can always contact us through sales@qsfptek.com, and we will give you direct and instant feedback.