Ceramic CapacitorIntroduction of 100V rated ceramic capacitors for automotive 48V power systems and robotics power supplies

In recent years, with the spread of Advanced Driver Assistance Systems (ADAS) and Autonomous Driving (AD) in the automotive field, vehicle functionality has advanced. As a result, application power consumption has increased, and with conventional 12V power systems there are emerging issues such as increased wire-harness weight due to higher current, increased vehicle weight, and greater power loss, leading to reduced driving range and lower energy efficiency.

As a next-generation technology to address these issues, adoption of automotive 48V power systems is expanding, and demand is growing for compact, high-capacitance capacitors rated at 100V used in power supply lines.

Murata Manufacturing offers an expanded lineup of compact, high-capacitance 100V ceramic capacitors and provides a wide range of products for automotive 48V power systems.

An example of a typical circuit configuration for an automotive 48V power system is shown below. The red highlighted areas in the figure indicate recommended mounting locations for 100V-rated ceramic capacitors.

At Murata Manufacturing, in addition to the AEC‑Q200‑compliant GCM series, we offer the GCJ series with a resin external electrode to prevent cracks caused by board bending, and the KCM series with a metal terminal structure. For details on each series, please refer to the links below.

We also provide power optimization services tailored to your product design. For consultations on power‑supply circuit optimization, component selection, or product details, please contact your sales representative.

100V ceramic capacitors are widely used not only in automotive 48V power systems but also in power circuits for robots and industrial equipment. We have published an Application Guide that summarizes circuit examples and recommended products for robotics; for details, please see the links below.