LaFox, IL, March 7, 2022 – Richardson Electronics, Ltd. (NASDAQ: RELL) will be exhibiting at the ACP O&M and Safety Conference on March 8-10, 2022, at the Hotel Del Coronado in San Diego, CA. Richardson’s highly successful pitch energy module (PEM), the patented ULTRA3000^®, will be on display in booth #’s 913 and 1013, as well as a new lineup of products to be launched later this year.

The ULTRA3000 is a proven technology for energy storage and power management within the wind turbine generator pitch system with millions of hours of operation in the field. These plug-and-play modules replace hazardous lead-acid batteries, are easy to install, reduce labor costs, and decrease downtime.

“Our team is looking forward to exhibiting and showcasing our patented ultracapacitor-based technology,” said Greg Peloquin, Executive Vice President of Richardson Electronics’ Power & Microwave Technologies Group. “It’s an exciting time at Richardson Electronics as we continue to expand our product portfolio with engineered solutions for clean energy and power management applications.”

The ACP O&M and Safety Conference 2022 is where the industry connects to recognize the unique challenges and identify solutions in health and safety, operations and maintenance, workforce training and development, and quality assurance.

Meet with the Richardson Electronics team at the ACP O&M and Safety Conference 2022, booth #’s 913 and 1013, to learn more about our latest technology in energy storage and power management. Registration for the conference is onsite at the Hotel Del Coronado on Monday, March 7, from 4:00 PM – 5:30 PM (PT) or Tuesday, March 8, from 7:30 AM – 5:30 PM (PT).

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; 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 Richardson Electronics – Power & Microwave Technologies

For nearly 75 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at: www.rellpower.com.

Announcing SemiQ’s 1200V 80mΩ Silicon Carbide MOSFET

LaFox, IL, January 26, 2022 – Richardson Electronics, Ltd. (NASDAQ: RELL) announces the availability of SemiQ’s 2nd generation silicon carbide power switches, 1200V 80mΩ SiC MOSFETs. These MOSFETs complement SemiQ’s existing SiC rectifiers at 650V, 1200V, and 1700V.

SemiQ has engineered two new MOSFETs, GP2T080A120U (TO-247-3L) and GP2T080A120H (TO-247-4L), to provide the best trade-off of conduction and switching losses. These new products give designers more flexibility over a broader range of applications in comparison to other devices on the market. Samples are available upon request; please contact a Richardson Electronics representative.

SiC MOSFETs bring high efficiency to high-performance applications including electric vehicles, power supplies and data centers and are specifically designed and tested to operate reliably in extreme environments. Compared to legacy silicon IGBTs, SemiQ’s MOSFETs switch faster with lower losses, enabling system-level benefits through reduced size, weight, and cooling requirements.

“SemiQ has gone above and beyond in their continued investment in this wide-band gap technology,” stated Richardson’s Greg Peloquin, Executive Vice-President, Power and Microwave Technologies Group. “The addition of their Silicon Carbide MOSFET technology allows for the expansion of demand creation capabilities in a number of applications.”

Richardson Electronics provides solutions and adds value through design-in support, systems integration, prototype design, manufacturing, testing, logistics, and aftermarket technical service and repair on a global basis.

“As our SiC MOSFET portfolio continues to grow, we appreciate the support of Richardson Electronics’ team.  They know the customers, the applications, and our SiC Devices,“ stated Michael T. Robinson, President & General Manager of SemiQ Inc.

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; 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 Richardson Electronics – Power & Microwave Technologies

For over 70 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at www.rellpower.com.

About SemiQ

SemiQ designs, develops and manufactures Silicon Carbide (SiC) Power Semiconductors as well as 150mm SiC epitaxial wafers. SiC Diodes and MOSFETs are available in both discrete and module form factors as well as bare die and wafer form. SemiQ also offers power conversion application expertise which includes sub-system design and semi-custom modules. SemiQ serves the following end markets:  Electric Vehicle Chargers and Charging Stations; Power Factor Correction (PFC); Output Rectification; Power Supplies including Server Farms; Solar Panel Inverters, Welding, Medical Equipment; and Motor Drives. SemiQ’s manufacturing and engineering facilities are located in Lake Forest, California. The Company is uniquely positioned with a fully redundant SiC supply chain.

Newly issued patent to support the continued Replacement of Wind Turbine Batteries with Ultracapacitor Module Technology

LaFox, IL, December 8, 2021 – Richardson Electronics, Ltd. (NASDAQ: RELL), a global provider of engineered solutions for renewable energies, is pleased to announce the issuance of U.S. Patent No. 11,193,471 (the ’471 Patent). The ’471 Patent is a result of Richardson’s innovative solutions for replacing batteries in wind turbine pitch systems. The ’471 Patent is the second patent covering these solutions with additional patents still pending. Richardson’s solution is embodied in its market-leading solution, the ULTRA3000^® Pitch Energy Module (PEM). The ULTRA3000^® PEM is an ultracapacitor-based plug-and-play replacement for batteries in wind turbine generator pitch systems. The ULTRA3000^® PEM is a direct one-for-one replacement for batteries and chargers that can be installed with no modifications to the battery box.

“We are pleased the U.S. Patent Office continues to recognize the innovations found in our ULTRA3000^® PEM. The Richardson engineering team worked hard to create a true plug-and-play product which is environmentally friendly and easily installed,” stated Richardson’s Greg Peloquin, Executive Vice-President, Power & Microwave Technologies Group. “We are proud to provide a cost-effective, improved solution for replacing batteries in wind turbine pitch systems.”

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; 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 Richardson Electronics – Power & Microwave Technologies

For nearly 75 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at: www.rellpower.com.

LaFox, IL, December 1, 2021 – Richardson Electronics, Ltd. (NASDAQ: RELL) will be exhibiting in-person at the CLEANPOWER event on December 7-8, 2021, at the Salt Palace Convention Center in Salt Lake City, UT. Their patented ultracapacitor-based pitch energy module, the ULTRA3000^®, will be on display during the show in booth #1518.

The ULTRA3000 is a proven technology for energy storage and power management within the wind turbine generator pitch system with over 2 million hours of operation in the field. These plug-and-play modules replace hazardous lead-acid batteries, are easy to install, reduce labor costs, and decrease downtime.

“We look forward to showcasing the ULTRA3000^® at what we expect will be a very engaging event,” said Greg Peloquin, Executive Vice President of Richardson Electronics’ Power & Microwave Technologies group. “It’s an exciting time for us at Richardson as we continue to introduce ultracapacitor-based power management products to a rapidly evolving market.”

CLEANPOWER 2021 is the renewable energy industry’s premier event, bringing policy leaders, industry experts, and major players together for a week of learning, networking, and innovation.

Meet with the Richardson Electronics team at CLEANPOWER, booth #1518, to learn more about the show. To register, visit the CLEANPOWER registration page.

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; 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 Richardson Electronics – Power & Microwave Technologies

For nearly 75 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at: www.rellpower.com.

LaFox, IL, November 16, 2021– Richardson Electronics, Ltd. (NASDAQ: RELL) announces the availability of AMOGREENTECH’s energy storage system solutions using lithium-iron-phosphate batteries.

AMOGREENTECH, a division of AMO GROUP, manufactures energy storage systems (ESS), including the new lithium-iron-phosphate (LiFePO4) batteries. The LiFePO4 is a safe battery option with a wide charge and discharge temperature range and a low risk for fire or explosion. Assembled in Korea and the USA, these LiFePO4 batteries are highly customizable and an excellent solution for any application requiring optimum energy storage and flexibility.

The benefits of AMOGREENTECH’s Energy Storage Systems include:

• High-efficiency discharge
• High energy density
• Wide effective state of charge (SOC) range
• Rapid charge to 80% capacity in 10 minutes
• Long-life
• Cycle life of +6,000
• Performance at low temperatures (including -30°C)
• On-time external monitoring by LCD monitor and SNMP port
• Safe system by alarm for overcharge / over-discharge & cutoff for each cell & whole system
• Low risk of fire or explosion
• Increased input and output current
• Effective utilization of space
• Free from harmful substances by using environment-friendly materials

“Due to their thermal and chemical stability, the LiFePO4 batteries are highly rated in safety and have a longer life cycle in comparison to other battery technologies currently on the market,” stated Richardson’s Greg Peloquin, Executive Vice-President, Power and Microwave Technologies Group. “AMOGREENTECH coupled with Richardson Electronics’ design capabilities will lead to further battery engineered solution products that will be designed, manufactured, and tested in our LaFox, Illinois manufacturing facility, and will further advance our power management product strategy.”

Richardson Electronics provides solutions and adds value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair on a global basis.

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; 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 Richardson Electronics – Power & Microwave Technologies

For over 70 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at www.rellpower.com.

LaFox, IL, October 27, 2021– Richardson Electronics, Ltd. (NASDAQ: RELL), announces a global distribution agreement with Wakefield Thermal Management products, expanding its range of heat sinks and related products for thermal management applications.

Wakefield Thermal Management has been in business since 1957, providing thermal solutions to a range of companies from international Fortune 50 companies to small and medium-sized businesses. Industries served include Power Conversion, Information Technology, Renewable Energy, Telecommunications, Transportation, Aerospace/Defense, LED Lighting, Factory Automation, Consumer, and Medical.

Wakefield Thermal manufactures a wide array of products, including thermal extrusions, LED heat sinks, heat frames and pipes, fans, heat exchangers, coolant distribution units, and liquid cold plates. Wakefield Thermal is unique in its ability to deliver the increasingly complex thermal solutions required to meet the thermal engineering challenges of today’s ever-higher electronics packaging densities.

“We are delighted to announce the partnership with Wakefield Thermal, a well-known brand in thermal management products,” stated Richardson’s Greg Peloquin, Executive Vice-President, Power and Microwave Technologies Group. “With its expansive selection of high-quality products, Wakefield’s thermal management solutions will add to our design-in capabilities for both the RF & Microwave and the Power & Energy markets.”

Richardson Electronics provides solutions and adds value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair on a global basis.

“Adding Richardson Electronics, Ltd. as an extension of the Wakefield Thermal Global Sales Channel will allow us to provide not only design assistance but global supply chain to its impressive customer base in power electronics,” stated Wakefield Thermal’s Robert Kennedy, President.“  “Richardson Electronics’ global sales force will be instrumental in growing its custom thermal solution business that is being driven by our rapid growth in NPI standard product off the shelf.”

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; 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 Richardson Electronics – Power & Microwave Technologies

For over 70 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at www.rellpower.com.

Forward-Looking Statements

This release includes certain “forward-looking” statements as defined by the Securities and Exchange Commission.  Statements in this press release regarding the Company’s business that are not historical facts represent “forward-looking” statements that involve risks and uncertainties. A wide variety of factors that may cause actual results to differ from the forward-looking statements include, but are not limited to, the following: whether the ’130 Patent will solidify the Company’s foothold in the wind turbine market in the future; whether the Company will be able to adapt the  technology underlying the ‘130 Patent to perform as intended; competition from larger, more established companies with far greater economic and human resources; its ability to attract and retain customers and quality employees; the effect of changing economic conditions; and changes in government regulations, tax rates and similar matters. These cautionary statements should not be construed as exhaustive or as any admission as to the adequacy of the Company’s disclosures. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see Item 1A, “Risk Factors” in the Company’s Annual Report on Form 10-K filed on August 3, 2020, and other reports we file with the Securities and Exchange Commission.  The Company assumes no responsibility to update the “forward-looking” statements in this release as a result of new information, future events or otherwise.

LaFox, IL, October 22, 2021– Richardson Electronics, Ltd. (NASDAQ: RELL), announces a new global distribution agreement with Maury Microwave.

Since its founding in 1957, Maury Microwave has served as a trusted technology solutions partner to many of the world’s leading manufacturers in the wireless technology chain, including companies serving RF demand in defense, space, and commercial markets.

Maury’s comprehensive suite of solutions span frequencies from RF through terahertz and include calibration, measurement, modeling, and interconnect technologies. Its broad range of products covers a broad range of requirements from measurement and modeling device characterization solutions for semiconductor technology development to cable assemblies and adapters designed to reduce measurement uncertainties and deliver confidence in measurements and models.

“Maury’s history of continuous innovation and strong service mindset correlate with our strategy of bringing disruptive technologies to market. Our mutual customers can count on our unwavering commitment to performance, service, and innovation,” stated Richardson’s Greg Peloquin, Executive Vice-President, Power and Microwave Technologies Group

“Our partnership with Richardson Electronics will help empower us to support our customers with their test challenges,” said Steven Harris, Vice President, Sales at Maury Microwave.  “We look forward to this close collaboration and expanding our global reach for the benefit of the entire RF community.”

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; 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 Richardson Electronics – Power & Microwave Technologies

For over 70 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at www.rellpower.com.

Maury

Headquartered in Ontario, CA, Maury Microwave Corporation designs and manufactures state-of-the-art RF measurement and interconnect solutions that enable the world’s best wireless communication technologies and networks to get better, faster, and stronger. For more information, please visit www.maurymw.com.

Includes showcasing products at Key Energy – Renewable Energy Expo in Italy

LaFox, IL, Thursday, October 14, 2021 – Richardson Electronics, Ltd. (NASDAQ: RELL) is expanding into the European market with the patented ULTRA3000^® Series of ultracapacitor modules that are custom designed for energy storage and power delivery for wind turbine generators. This proven technology has been highly successful in the North American market, with over 2 million accumulated hours of operation in wind turbine pitch systems. Its patented plug-and-play design allows users to reduce installation time and labor cost and decrease downtime.

“The ULTRA3000^® is extremely well received by key wind farm owners/operators in North America. We are excited about the launch of this product into the European market, where green initiatives are rapidly increasing.  With our strong resources and infrastructure in Europe, we are able to immediately serve new and existing customers throughout Europe with this groundbreaking technology,” said Greg Peloquin, Executive Vice President of Richardson Electronics’ Power & Microwave Technologies group.

Richardson Electronics will be exhibiting at the Key Energy – Renewable Energy Expo, stand D7-194.  The conference will take place October 26 through October 29, 2021, at the Rimini Expo Centre, Italy. Key Energy is an international exhibition and conference covering renewable energy, energy storage systems, energy efficiency, urban regeneration, sustainable mobility, lighting, and smart grids. A focus area is wind technology, including floating wind technology, components, solutions for revamping and re-powering existing parks, and operations and maintenance. The show is in collaboration with ANEV (Italy’s National Association of Wind Energy). Key Energy will showcase technologies, services, and integrated solutions that promote and accelerate the transition to a carbon-neutral economy – the main aim of the Green Deal, the strategic plan for sustainable growth launched by the European Union.

Meet with the Richardson Electronics team at the Key Energy Expo – stand D7-194.  To learn more about the show or to register, visit the Key Energy registration page.

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; 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 Richardson Electronics – Power & Microwave Technologies

For nearly 75 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at: www.rellpower.com.

Newly Issued Patent to Allow Replacement of Wind Turbine Batteries with Ultracapacitors

LaFox, IL, July 29th, 2021– Richardson Electronics, Ltd. (NASDAQ: RELL), a global provider of engineered solutions for numerous renewable energy applications, is pleased to announce the issuance of U.S. Patent No. 11,073,130 (the ’130 Patent). The ’130 Patent is a result of Richardson’s innovative solutions for replacing lead-acid batteries in wind turbine pitch systems. Richardson’s solution is embodied in its market-leading solution, the ULTRA3000^® Pitch Energy Module (PEM). The ULTRA3000^® is an ultracapacitor-based plug and play replacement for batteries, including General Electric’s (GE) wind turbine pitch systems. The ULTRA3000^® PEM is a direct one-for-one replacement for the GE batteries and chargers and can be installed with no modifications to the battery box.

“We are very pleased the U.S. Patent Office recognized the innovation of our ULTRA3000^® Pitch Energy Module. The Richardson engineering and manufacturing team worked hard on this product to make it a truly plug-and-play product, allowing for easy and efficient installation,” stated Richardson’s Greg Peloquin, Executive Vice-President, Power and Microwave Technologies Group. “We are excited to bring the ULTRA3000^® to market and provide a cost-effective, improved solution for replacing lead-acid batteries in wind turbine pitch systems.”

Richardson will be presenting its patented ULTRA3000^® PEM at the upcoming Symposium APETT show, held September 8, 2021, in Denmark, and the Cleanpower Expo, held December 7^th-8^th 2021, at the Salt Palace Convention Center in Salt Lake City, Utah.

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; 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 Richardson Electronics – Power & Microwave Technologies

For over 70 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at www.rellpower.com.

Forward-Looking Statements

This release includes certain “forward-looking” statements as defined by the Securities and Exchange Commission.  Statements in this press release regarding the Company’s business that are not historical facts represent “forward-looking” statements that involve risks and uncertainties. A wide variety of factors that may cause actual results to differ from the forward-looking statements include, but are not limited to, the following: whether the ’130 Patent will solidify the Company’s foothold in the wind turbine market in the future; whether the Company will be able to adapt the  technology underlying the ‘130 Patent to perform as intended; competition from larger, more established companies with far greater economic and human resources; its ability to attract and retain customers and quality employees; the effect of changing economic conditions; and changes in government regulations, tax rates and similar matters. These cautionary statements should not be construed as exhaustive or as any admission as to the adequacy of the Company’s disclosures. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see Item 1A, “Risk Factors” in the Company’s Annual Report on Form 10-K filed on August 3, 2020, and other reports we file with the Securities and Exchange Commission.  The Company assumes no responsibility to update the “forward-looking” statements in this release as a result of new information, future events or otherwise.

LaFox, IL, June 2, 2021– Richardson Electronics, Ltd. (NASDAQ: RELL) will be exhibiting in both the in-person and virtual International Microwave Symposium (IMS) 2021 events. The in-person IMS show will be in Atlanta Georgia at the Georgia World Congress Center from June 7^th to June 10^th. Richardson Electronics will be located at Booth# 1310. The virtual event will be held June 20-25, 2021.

IMS is an annual opportunity for networking with the microwave industry. All attendees are involved in technologies associated with RF, microwave, and THz frequencies. The Richardson Electronics team will be at the live event displaying top tier partners that deliver disruptive technologies worldwide for a range of applications.  The virtual booth will feature downloadable information on the newest products and technologies and our 2021 RF and Microwave Line Card. Our team will be ready to answer questions via online chat.

“We look forward to IMS each year as it is the biggest event to not only meet with our customers, both in person and virtually, but to showcase the latest and greatest products from our technology partners,” said Greg Peloquin, Executive Vice President of Richardson Electronics’ Power & Microwave Technologies group.

You can register for the IMS 2021 show here.

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; 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 Richardson Electronics – Power & Microwave Technologies

For over 70 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world’s most innovative technology partners. Richardson Electronics’ Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair—all through our existing global infrastructure. More information is available at www.rellpower.com.