Richardson Announces Date of Fourth Quarter Fiscal 2009 Conference Call

Richardson Electronics, Ltd. (NASDAQ: RELL) plans to release its financial results for the fourth quarter and fiscal year ended May 30, 2009, after the close of business on Wednesday, July 22, 2009. The release will be distributed by Business Wire and will be available on the Company’s website at www.rell.com.

On Thursday, July 23, 2009, at 9:00 a.m. CT, Edward J. Richardson, Chairman and Chief Executive Officer, and Kathleen S. Dvorak, Chief Financial Officer, will host a conference call to discuss the Company’s fiscal 2009 results. A question and answer session will be included as part of the call’s agenda. To listen to the call, please dial 888-419-5570 and enter passcode 11598124 approximately five minutes prior to the start of the call. A replay of the call will be available beginning at 11:00 a.m. CT on July 23, 2009, for seven days. The telephone numbers for the replay are (USA) 888-286-8010 and (International) 617-801-6888; access code 65512525.

About Richardson Electronics

Richardson Electronics, Ltd. is a global provider of engineered solutions and a global distributor of electronic components to the radio frequency (“RF”), wireless and power conversion, electron device, and display systems markets. Utilizing its core engineering and manufacturing capabilities, the Company’s strategy is to provide specialized technical expertise and value-add, or “engineered solutions.” The Company provides solutions and adds value through design-in support, systems integration, prototype design and manufacturing, testing, and logistics for end products of its customers. More information is available online at www.rell.com.

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