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RJ45 Jacks Go Magnetic for 1-Gb/s Applications

May 14, 2025

Phoenix Contact expanded its Ethernet lineup with rugged RJ45 magnetic jacks that simplify PCB design, reduce EMI, and deliver 1-Gb/s performance.

Cabe Atwell

Related To:

Electronic Design

Designed to handle data flows of up to 1 Gb/s, Phoenix Contact’s new RJ45 magnetic jacks are similar to traditional Ethernet ports. The difference is they integrate magnetic components, such as transformers, chokes, and common-mode filters, directly in the jack housing.

According to Phoenix, the new RJ45 jacks (see figure) simplify the Ethernet design process, reduce PCB complexity, and minimize the risk of EMC. The latest jack series is offered in 90- and 180-degree orientations and is well-suited for wave soldering (THT) and reflow (THR) processing, which enables automated processing.

Phoenix Contact RJ45 magnetic jack — Phoenix Contact’s robust RJ45 magnetic jacks can handle data rates up to 1 Gb/s.

They also have a sturdy industrial design, making them good fits in harsh environments. Options include shield springs and LEDs as visual status indicators.

About the Author

Cabe Atwell | Technology Editor, Electronic Design

Cabe is a Technology Editor for Electronic Design.

Engineer, Machinist, Maker, Writer. A graduate Electrical Engineer actively plying his expertise in the industry and at his company, Gunhead. When not designing/building, he creates a steady torrent of projects and content in the media world. Many of his projects and articles are online at element14 & SolidSmack, industry-focused work at EETimes & EDN, and offbeat articles at Make Magazine. Currently, you can find him hosting webinars and contributing to Electronic Design and Machine Design.

Cabe is an electrical engineer, design consultant and author with 25 years’ experience. His most recent book is “Essential 555 IC: Design, Configure, and Create Clever Circuits”

Cabe writes the Engineering on Friday blog on Electronic Design.