Digi-Key and Allegro MicroSystems Sign Distribution Partnership

THIEF RIVER FALLS, Minnesota, USA - April 18, 2006

Digi-Key Corporation and Allegro MicroSystems, Inc., a leader in the integrated magnetic sensor and integrated motor driver product segments, today announced the signing of a distribution agreement. As one of the world’s fastest growing distributors of electronic components, Digi-Key currently ships products to more than 140 countries around the globe.

Allegro Microsystems, Inc. is a global leader in the development, manufacture and marketing of high performance power integrated circuits and Hall-effect sensors. Allegro’s innovative, system-level solutions serve high-growth applications within the automotive, computer/office automation, industrial, consumer and communications markets, while its leading-edge product and processes reinforce its expertise in motor driver and power management technology. In addition to its place as a world leader in automotive sensing electronics and Hall-effect magnetic sensors, Allegro holds leading positions with printer, scanner, copier and portable device (e.g. cellular phones) applications.

Allegro products will be offered in Digi-Key’s print and online catalogs with this new distribution agreement enabling Digi-Key to fulfill both the design and production needs of its growing customer base.

“We welcome this innovative company to our vendor lineup,” said Mark Larson, Digi-Key president and COO. “Allegro MicroSystems’ desire to back its technically advanced products with value for its customers makes this company an excellent match for Digi-Key.”

“Digi-Key’s depth and breadth of product offering will enhance Allegro’s ability to satisfy our customers’ demands for immediate access to our growing portfolio of products,” said Arnie Maguire, Allegro’s director of North American sales. “We are delighted to partner with this established leader in the e-commerce area.”

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 Allegro MicroSystems, Inc.

Allegro MicroSystems, Inc. is a supplier of advanced mixed-signal power semiconductors and Hall-effect sensors targeted toward the automotive, communications, computer/office automation, consumer, and industrial markets. Allegro maintains a leadership position in the integrated magnetic sensor and integrated motor driver product segments. With more than 2000 employees, Allegro is headquartered in Worcester, MA. Further information about Allegro can be found at www.allegromicro.com.

CONTACT: Steven G. Tsukichi, VP/Marketing, Digi-Key Corporation; Stephanie Fennelly, Communications Manager, Allegro, 508-854-5363 (voice), sfennelly@allegromicro.com