What Is Active Metal Brazed Ceramic Substrate and How Does It Improve Power Electronics?
Active Metal Brazed (AMB) Ceramic Substrates are advanced materials designed to meet the demanding requirements of high-power and high-temperature electronics. These substrates are made by brazing a metal—typically copper—directly onto a ceramic base such as aluminum nitride (AlN) or silicon nitride (Si₃N₄) using an active metal layer, which creates a strong, thermally conductive bond.
AMB substrates offer exceptional thermal conductivity, high electrical insulation, and mechanical strength, making them ideal for applications such as IGBT modules, power converters, automotive inverters, and renewable energy systems.
Compared to traditional Direct Bonded Copper (DBC) substrates, AMB substrates provide better thermal cycling performance, meaning they can withstand rapid temperature changes without cracking or delamination. This reliability is crucial in harsh operating conditions, including electric vehicles and industrial power equipment.
The key advantage lies in the active metal brazing process, which allows for direct metal-ceramic bonding at relatively low temperatures while maintaining structural integrity. This process also supports complex geometries and high integration densities, enabling miniaturized designs without compromising power handling.
As demand for efficient, compact, and durable electronic systems grows—especially in the automotive and renewable energy sectors—AMB ceramic substrates are becoming a preferred choice for next-generation power modules.