Richardson Electronics and Ohmite Sign Global Distribution Agreement

Expands technical support of Ohmite’s leading high-performance resistor technology

LaFox, IL, Tuesday, July 21, 2015 – Richardson Electronics, Ltd. (NASDAQ: RELL) announced today a new global distribution agreement with Ohmite Manufacturing Company, a Chicago-based provider of resistive products for high-current, high-voltage and high-energy applications. The agreement supports Ohmite’s efforts to expand sales and technical support of its high-performance resistor technology.

Ohmite has been the leading provider of resistive products for high-current, high-voltage and high-energy applications for over 90 years. The company’s full complement of resistor construction includes wirewound, wire element, thick film, and ceramic composition.

Richardson Electronics is a global channel partner for world-class electron devices, power electronics, and RF & microwave components.

“Ohmite offers a broad selection of power resistors, and their ongoing product development means that they continue to offer the leading edge resistor technology required in today’s sophisticated applications,” said Greg Peloquin, Executive Vice President of Richardson Electronics’ Power & Microwave Technologies group. “With compatible focus markets, we are excited to support our new partner and bring their innovative technologies to our customers.”

“Richardson Electronics is a wonderful channel partner with a wide global presence, providing local technical support to help identify new opportunities that extend our business,” stated Greg Pace, President of Ohmite. “Their ability to provide solutions and add value from design-in support and prototype design through to high-volume production makes them an ideal partner for Ohmite’s expanding product line.”

About Richardson Electronics, Ltd.

Richardson Electronics, Ltd. is a leading global provider of engineered solutions, power grid and microwave tubes and related consumables; power conversion and RF and microwave components; high value displays, flat panel detector solutions and replacement parts for diagnostic imaging equipment; and customized display solutions. We serve customers in the alternative energy, healthcare, aviation, broadcast, communications, industrial, marine, medical, military, scientific and semiconductor markets. The Company’s strategy is to provide specialized technical expertise and “engineered solutions” based on our core engineering and manufacturing capabilities. The Company provides solutions and adds value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair through its global infrastructure. More information is available at www.rell.com.

Richardson Electronics common stock trades on the NASDAQ Global Select Market under the ticker symbol RELL.

About Ohmite Manufacturing Company

Ohmite Manufacturing Company is headquartered in Chicago Illinois and is a wholly owned subsidiary of Heico Company, LLC. Ohmite has been the leading provider of resistive products for high current, sensing, high voltage, and high energy applications for 90 years. The company’s full complement of resistor constructions includes wirewound, wire element, thick film, and ceramic composition. Ohmite maintains operations in South Texas, Mexico, England and the Chicago area.