The two basic package types of current IGBT modules. which evolved from opp
osing requirements of traction and power transmission applications, are pre
sented. It is shown that reliability and lifetime aspects given by traction
puts most stringent limitations on the choice of materials at given cost t
argets. The materials used today for high power packaging and the future de
velopments of high power IGBT-packages are discussed. (C) 1998 Published by
Elsevier Science Ltd. All rights reserved.