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Apex 2022 11 PA441 & PA443 350V Low Noise Power Amplifiers • Next-generation performance based on the PA34X product family. • Improved specialty high voltage process to offer a 96% reduction in signal noise. • Ideal for driving high voltage, fine motion systems for piezo positioning applications. LEARN MORE VRE107 Low Drift Precision Voltage Reference • Improved accuracy possible by a multipoint laser compensation technique. • Low Drift Precision Voltage Reference provides an ultra-stable +5V output. • Superior stability, accuracy, and quality make these references ideal for precision applications. LEARN MORE same way. The trick here is to make these attachments such that any residual air from the attachment joint is removed. The more consistent the solder attachments between the power die and substrate, and between the substrate and base plates, the better the thermal performance and the faster heat can be transferred away from the circuits. Beyond these techniques, Apex approaches thermal management through the materials selected for its stack-ups. Apex has been using beryllium oxide in its designs for a long time. As an electrical isolator and thermal conductor, beryllium oxide has very good thermal properties. Apex is also investing in new materials, such as copper-molybdenum-copper, to replace their traditional copper base plates, allowing for even greater thermal sinking. Further, the company is investigating methods to match the coefficients of thermal expansion between different layers and components within its designs. By matching these coefficients, Apex can design away a lot of the mechanical stresses that occur at high temperatures that eventually lead to premature failures. Equally important as the device itself is how the device is used on the board level. For example, components should be mounted on heat sinks with a certain flatness to optimize thermal conductivity and allow for the transfer of heat from the components to the heat sink as quickly as possible. Apex is unique in its approach of working directly with its customers to explain and demonstrate best practices for mounting components. Control Thermals, Ensure Reliability High reliability is a must-have in modern electronics, but achieving high reliability is becoming increasingly difficult. Trends in the industry, including the drive toward higher power at smaller sizes, are resulting in increased thermal generation, and, as a result, a decrease in device reliability. Ensuring high-reliability analog power designs requires a strong understanding of thermal management and thermal design. At Apex Microtechnology, we leverage over 40 years of experience to implement the best possible thermal management techniques for ensuring our devices offer customers the highest reliability possible.