Prior to its acquisition by ON Semiconductor, SANYO Semiconductor became the first company in the world (in
1969) to develop IMST, or Insulated Metal Substrate Technology, which enables complex electronic circuits on
plates of aluminum, that is to say, on metal substrates. Compared to standard FR4 PCBs, aluminum substrate based solutions provide high thermal conductivity combined with excellent shielding and isolation capabilities. IMST enables the co-integration of various components together with the actual power devices.