Bel Stewart Connector’s Category 7a ARJ45® Jack Integrated with Magnetics to Support 10GBase-T Ethernet Transmissions

Bel Stewart Connector, a division of Bel Fuse Inc. (NASDAQ: BELFA) (NASDAQ: BELFB), announced enhanced performance capabilities demonstrated by its ARJ45® Series of high-speed Category 7a modular jacks via the inclusion of integrated magnetics to support 10GBase-T performance parameters as defined by IEEE 802.3an-2006.

An industry leader in RJ45 interfaced 10GBase-T MagJack® connectors, Bel Stewart has extended its existing magnetic technology into the Category 7a performing ARJ45® jack, their newest twisted pair connector interface. The ARJ45 jack provides a viable connector solution for to-be-defined, next generation IEEE twisted pair Ethernet standards as the high frequency requirement of these future standards will likely exceed the limitations of existing RJ45 connectors.

The mechanical interface of the ARJ45 connector series meets the IEC 61076-3-110 standard, and the overall construction facilitates integration with the magnetics required for twisted pair Ethernet data transmission. The connector’s interface also provides the familiarity of an RJ45-style device in its use and port density, along with the performance benefits of a Category 7a connector system.

“Bel Stewart has supported passive versions of its ARJ45 connector since 2006 and we wanted to expand our product offering in this series,” said Derek Imschweiler, product manager of Interconnect Products at Bel Stewart. “Since IEEE standards for 40GBase-T or 100GBase-T do not currently exist, we felt it was appropriate to take the highest performing IEC twisted pair connector, Category 7a, and integrate it with magnetics to support the fastest twisted pair Ethernet standard available, 10GBase-T. This positions us with a clear product development path for our ARJ45 connector series toward higher speed standards as they are established.”

Bel Stewart’s standard ARJ45 connector product offering includes passive 90 degree PCB mounted jacks along with plugs and cable assemblies offering integrated strain relief boots and anti-snag features for plug tab protection. ARJ45 connectors are provided standard with gold-plated (50-microinch) contacts to ensure high-cycle life and are manufactured of UL94-VO plastics. Additional specifications include an operating temperature range of -40 degrees to +85 degrees C, and durability of 750 matching cycles. Their voltage range is 150 VAC, and current rating is 1.5 A @ 25 degrees C. For additional information, visit http://www.belfuse.com/StewartConnector/ProdList-ModularConnectors.asp?pPrLinID=9&pView=7&pPrLin=Modular%20Connectors&pCat=ARJ45%AE%20CAT7/7a%20Connectors&pReset=y&pOrder=BelPartNumber.

About Bel

Bel (www.belfuse.com) and its divisions, including Stewart Connector, are primarily engaged in the design, manufacture, and sale of products used in networking, telecommunications, high-speed data transmission, commercial aerospace, military, transportation, and consumer electronics. Products include magnetics (discrete components, power transformers and MagJack® connectors with integrated magnetics), modules (DC-DC converters, integrated analog front end modules and custom designs), circuit protection (miniature, micro and surface mount fuses) and interconnect devices (micro, circular and filtered D Sub connectors, passive jacks, plugs and high speed cable assemblies). The Company operates facilities around the world.

Except for historical information contained in this news release, the matters discussed are (including information regarding ARJ45® Category 7a connectors) forward-looking statements that involve risks and uncertainties. Among the factors that could cause actual results to differ materially are the following: the effect of business and economic conditions, the impact of competitive products and pricing; capacity and supply constraints or difficulties; product development, commercializing or technological difficulties; the regulatory and trade environment; and the risk factors reported from time to time in the Company's SEC reports.

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