Richardson Electronics, Ltd. and StarPower Europe AG Sign Distribution Agreement

Extends StarPower power module product reach to new customers and opportunities worldwide

LaFox, IL, Tuesday, July 7, 2015 – Richardson Electronics, Ltd. (NASDAQ: RELL) announced today a new distribution agreement with StarPower Europe AG, a leading power module company headquartered in Jiaxing, China. This global agreement supports the expansion of StarPower’s products to new customers and opportunities outside of China as the demand and applications for power modules continue to grow.

Founded in 2005, StarPower designs and manufactures IGBT, MOSFET, IPM, FRD, and rectifier modules, as well as customized modules, for inverter, welding machine, inductive heating, UPS, EV, and solar/wind power applications from 0.5kW to more than 1MW. The continuing growing demand for higher energy efficiency and green energy generation present an ideal environment for StarPower modules.

Richardson Electronics is a global channel partner for industry-leading electronic components and engineered solutions.

“StarPower designs unique and optimized power modules with low loss and high conversion efficiency for power applications in the inverter, wind, solar, welding, traction/EV and UPS markets,” said Greg Peloquin, Executive Vice President of Richardson Electronics Power & Microwave Technologies group. “Their innovative technologies align perfectly with our highly technical sales team and our ability to identify the right customers and design opportunities for this product line.”

“Richardson Electronics is a perfect partner for our products and applications focus,” responded Mr. Peter Frey, Managing Director. “Their worldwide presence, technical expertise throughout the entire design cycle, and outstanding reputation for launching the newest products and latest technologies to the global marketplace will help us reach new customers and effectively take advantage of the increased opportunities for power module applications.”

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 StarPower

StarPower is a leading power module company headquartered in Jiaxing, China. Founded in 2005, StarPower designs and manufactures IGBT / MOSFET / IPM / FRD / Rectifier modules and customized modules for applications in the area of inverters, welding machines, inductive heating, UPS, EV, solar/wind power and etc. in the power range of 0.5kW up to more than 1MW.

StarPower Europe AG, with its head office in Switzerland, is the European subsidiary of StarPower Semiconductor Ltd. StarPower Europe recently announcement building a European development centre in Nuremberg, Germany. The goal is to test new technologies and materials, and provide the gained expertise to its headquarters for use in the production environment. A 240 m2 space accommodates the offices and laboratories. The process engineers and developers from headquarters are involved from the beginning and are trained in Nuremberg, so that the expertise can be easily transferred into the series production of semiconductor modules. StarPower sets a new milestone for its growth in Europe with high-quality semiconductor modules, using its European expertise. More information is available at www.starpowereurope.com.