Digi-Key Corporation and Signal Transformer Sign Distribution Agreement

THIEF RIVER FALLS, Minnesota, USA - May 11, 2006

Digi-Key Corporation and Signal Transformer Inc. today announced the signing of a global distribution agreement. One of the world’s fastest growing electronic component distributors, Digi-Key currently ships product to more than 130 countries around the world.

Signal Transformer is a subsidiary of Bel Fuse Inc. (NASDAQ: BELFA & BELFB), a manufacturer of products used in networking, telecommunications, high-speed data transmission, automotive and consumer electronics. In addition to offering a broad selection of standard transformers, Signal Transformer specializes in working with customers to find custom solutions.

Digi-Key will stock Signal’s chassis and PC mount transformers for use in a variety of applications. Split bobbin transformers with high isolation, international transformers and miniature low power transformers will be among the many types of Signal Transformer products offered in Digi-Key’s print and online catalogs and available to purchase directly from Digi-Key.

“We are pleased to expand our existing relationship with Bel and add Signal Transformer to our line card,” said Mark Larson, Digi-Key’s president and COO, “We are certain our customers will find its products of significant interest and appeal.”

“Signal Transformer’s addition to the family of Bel products already available through Digi-Key demonstrates the continued growth of our relationship and commitment to better meet the needs of our customers,” said Dan Bernstein, president and CEO of Bel Fuse Inc.

This distribution agreement between Digi-Key and Signal Transformers will allow Digi-Key to fulfill both the design and production requirements of its diverse customer base.

About Digi-Key Corporation

Digi-Key Corporation, based in Thief River Falls, Minn., is a global, full-service provider of both prototype/design and production quantities of electronic components, offering more than three million products from over 650 quality name-brand manufacturers. With over one million products in stock and an impressive selection of online resources, Digi-Key is committed to stocking the broadest range of electronic components in the industry and providing the best service possible to its customers. Additional information and access to Digi-Key's broad product offering is available on the Digi-Key website.

About Bel

Bel (www.belfuse.com) and its subsidiaries are primarily engaged in the design, manufacture and sale of products used in networking, telecommunications, high-speed data transmission, automotive 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 (passive jacks, plugs and cable assemblies). The company operates facilities around the world.

CONTACT: Steven G. Tsukichi, VP/Marketing, Digi-Key Corporation; Linda Sorrentino, Director of Marketing, Bel Fuse Inc., 858-676-9650 x103, lsorrentino@belfuse.com