JERSEY CITY, NJ -- April 15, 2010 -- BEL FUSE INC., (NASDAQ:BELFA) & (NASDAQ:BELFB) will release preliminary unaudited financial results for the first quarter ended March 31, 2010 at approximately 7:30 a.m. EDT on Thursday, April 29, 2010. Bel has scheduled a conference call at 11:00 a.m. EDT that morning to discuss its results for the quarter. To participate in the call, dial (720) 545-0088, conference ID #68715481.

A simultaneous webcast of the conference call may be accessed online from the Events and Presentations link on the Investor Info tab at www.BelFuse.com. The webcast will be available for replay, for a period of 20 days, at this same Internet address. For a telephone replay, dial (706) 645-9291, conference ID #68715481 after 2:00 p.m. EDT.

About Bel

Bel (www.belfuse.com) and its divisions, including Bel Power, 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, 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.

*  *  *  *  *

#4718

Bel Fuse Inc.

206 Van Vorst Street

Jersey City, NJ 07302

www.belfuse.com

tel 201.432.0463

fax 201.432.9542

Investor Contact:

Neil Berkman Associates

(310) 277-5162

info@berkmanassociates.com

Company Contact:

Daniel Bernstein

President

ir@BelFuse.com