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How to Make Reliable Ethernet Connections Using RJ45 Jacks With Magnetic Modules
Published: Friday, 25 September 2020

The RJ45 connector is the most widely used connector type—enabling Ethernet networking across a wide spectrum of devices from routers, switches, VDSL digital equipment, network set-top boxes, PCBs and other home and commercial hardware. When transferring signals across Ethernet devices, your connection must incorporate magnetics to protect against electromagnetic interference (EMI) and common mode signals and meet Base-T isolation requirements.

RJ45 Magnetic Component Advantages Versus Discretes
One of the most common ways to make the connection while meeting the Ethernet standard is to integrate magnetics with an RJ45 jack. While it’s possible to create an all-discrete design, RJ45 jacks with magnetic modules—also known as integrated connector modules, or ICMs—offer clear benefits.

Here are just some of the advantages of using RJ45 jack and connector modules for your Ethernet devices:

Broad acceptance. ICMs are appropriate for a wide range of Ethernet systems.
Less design effort. Because the magnetics are integrated into the jack, they can be added to a design more quickly and easily than separate, discrete components.
Space savings. The total package with integrated magnetics is typically the same size as the connector itself. The modules also reduce the amount of discrete components required for the design, which lowers space requirements, component count and assembly costs.
Efficiency gains. In addition to a quicker design process, the reduced component count also speeds up manufacturing.

Considerations for Selecting an RJ45 Jack With Integrated Module
ICMs have one potential design concern: the tightly arranged copper components within the module can create crosstalk, so be sure to look for an RJ45 magnetic module with good shielding. RJ45 magnetic modules for Power over Ethernet (PoE) applications must also handle higher currents and offer stronger isolation capability.

We offer integrated RJ45 jack and connector modules with shielding to satisfy a variety of Ethernet-enabled devices. The RJ45 products can be applied to various transport requirements, such as 10Base, 10/100Base, 1000Base (1G), 10G and PoE. Highlights of the lineup include:

12F/14F-1X Series. This 10BASE-T RJ45 jack and magnetic module’s integrated filter is the same size as the RJ45 connector, saving PCB space while reducing EMI radiation and improving EMI performance.
13F/6X Series. Designed for 100BASE-T transmission over UTP-5 cable, this RJ45 jack and magnetic module series offers designs to support every PHY. It also meets or exceeds IEEE 802.3 and ANSI X.3263 standards.
13F-67 Series (PoE and PoE+). This version of the 13F/6X Series is designed to provide the higher current and isolation required for PoE applications.

Make Your Ethernet Connections Fast and Reliable
A wide range of Ethernet-enabled devices across industries have one thing in common: RJ45 technology. To meet the prevailing Ethernet standards for isolation, the connection must include magnetics. RJ45 jacks with integrated modules can meet Ethernet connection needs while speeding up design and manufacturing time and saving PCB space.

Our RJ45 magnetic modules provide various transmission speeds and design options to ensure fast, reliable signal transmission for any Ethernet networked device.

For more information about Daburn-Polytron RJ45 jacks with integrated modules, visit our product page: RJ45 Magnetics.