Ceramic PCB
Ceramic PCB has the performance of high temperature and high electrical insulation, and it has the advantages of low dielectric constant, low dielectric loss, high thermal conductivity, good chemical stability, and similar thermal expansion coefficients of components.
Metal Base PCB
The copper PCB is the most expensive one in the metal substrates. The thermal conductivity is many times higher than the aluminum substrate and . It is used for high-frequency circuits and the big difference temperature variations. The thermal conductivity can be 0.8~3.0 W/c.K.