The 0.3mm Thickness Etching DBC (Direct Bonded Copper) Ceramic Substrate is a precision-engineered component designed to meet the demanding thermal and electrical requirements of modern automotive power electronics. With an ultra-thin profile of just 0.3mm, this substrate enables compact, lightweight designs essential for electric vehicles (EVs), hybrid electric vehicles (HEVs), and advanced driver-assistance systems (ADAS).
Manufactured through a high-temperature bonding process that directly fuses copper foil to an aluminum nitride (AlN) or alumina (Al₂O₃) ceramic core, this substrate delivers exceptional thermal conductivity—up to 170–230 W/mK for AlN variants—efficiently dissipating heat from power devices such as IGBTs, MOSFETs, and silicon carbide (SiC) modules. The 0.3mm thickness strikes an optimal balance between thermal performance and mechanical strength, reducing thermal resistance while maintaining structural integrity under vibration and thermal cycling.
The etching process allows for precise circuit patterning on the copper layers, creating intricate conductor traces with tight tolerances essential for high-density power module layouts. This capability enables integration of multiple functions onto a single substrate, reducing interconnection points and improving overall system reliability.
Automotive-grade features include excellent resistance to thermal shock, high dielectric strength for electrical isolation, and a coefficient of thermal expansion (CTE) closely matched to semiconductor materials—minimizing stress during temperature fluctuations.
Ideal for onboard chargers, traction inverters, battery management systems, and DC-DC converters, the 0.3mm etching DBC ceramic substrate delivers the performance, reliability, and miniaturization required for next-generation electric and autonomous vehicles.