Richardson Electronics Strategic Business Overview

Growth Opportunities and Focus: Richardson's Strategy Aligned with Compelling Market Dynamics Market ce L R16 Semiconductor POWER Manufacturing SCL SDA BU 3.3V 3.3V Power Management/ Alternative Energy Healthcare Market Driver / Update Richardson Electronics Richardson Opportunity • • • • • Semiconductor capex cycle expected to remain strong over the near-term LAM Research, a RELL semiconductor customer, expects demand to drive another year of capex spending growth in 2022 New applications are supporting growth in microwave tubes and magnetrons Examples include emerging markets such as synthetic diamonds, hydrogen, and building materials Growing opportunities to transition legacy lead acid battery applications to longer- lasting, more environmentally friendly, technologies • • • • • • Products support the global semiconductor wafer fab equipment market +50% of sales relate to deposition which is used for replacement of tools and existing wafer fabs RELL is one of the few remaining tube manufacturers and engineering companies For example, RELL's 915 megahertz magnetrons up to 100 kilowatts are being used for producing hydrogen Wind turbine market with ultracapacitor battery modules Lithium-ion phosphate battery modules for electric train engines • • • Wireless base station, and critical facility markets • Helping customers improve efficiency and Very few replacement options for CT tubes OEMS charge high prices for tubes and parts f hospital is not covered by expensive OEM service contract • deliver better clinical outcomes while lowering the cost of healthcare delivery $10 billion estimated global opportunity for aftermarket for diagnostic imaging parts and service Investor Presentation | © Richardson Electronics, Ltd. 9

View entire presentation