Issue link: https://resources.mouser.com/i/1538715
In addition to component robustness, validation and qualification standards are evolving. AEC-Q200 remains the baseline for automotive-grade passives, but OEMs increasingly demand testing beyond this standard to account for the real-world stresses of 48V applications. These include aggressive thermal cycling, long- term humidity exposure, and extended high-vibration profiles. Finally, as the volume and complexity of 48V systems grow, centralized architectures introduce new signal integrity challenges. Control units that once sat directly adjacent to sensors and actuators are now housed centrally. Such a spatial change requires passive components that can support longer high- speed data lines without compromising EMI suppression or signal fidelity. In response to these challenges, manufacturers are developing application-specific component families tailored to 48V designs. For instance, new common-mode chokes rated for 20– 30A are being launched to address the demands of power steering systems. At the same time, resistor technologies with anti-surge and high-power capabilities are being deployed in brake-by-wire and ADAS modules where thermal resilience and space efficiency are needed. YAGEO is supporting the transition to 48V architecture by • Developing high-ripple, low-ESR polymer and hybrid capacitors that maintain stability in thermally constrained environments; • Offering automotive-grade MLCCs with flexible terminations to withstand vibration and thermal cycling; • Introducing new common-mode choke families designed specifically for 20– 30A applications; and • Providing resistors with anti-surge and high-power ratings. C h a p t e r 1 | T h e 4 8V S h i f t— Po w e r i n g M o r e W i t h L e s s Beyond performance, two key factors in automotive systems are size and cost. The appeal of 48V lies in its ability to deliver high performance while minimizing both volume and expense." Pirooz Javanbakht Electrical Engineer, Mercedes-Benz AG 9 Powering the New Automotive Era with Smart Passive Solutions