公开(公告)号：DE4317215A1

公开(公告)日：1994-12-01

申请号：DE4317215

申请日：1993-05-24

Applicant: ABB RESEARCH LTD

Inventor： LAMBILLY HERVE DE DR ,  GUTFLEISCH FRIEDRICH DR ,  KESER HELMUT

IPC: H01T19/02 ,  H01B17/42 ,  H01L29/40

Abstract: Modules, in particular for power semiconductor components which are intended to withstand an operating voltage of 4.5 kV and an insulation voltage of 9.5 kV, require for the critical junction: insulator plate (1) - electrode (2) - air a potential barrier (3) which projects beyond the electrode (2), which is made of copper, by 1 mm - 2 mm at the edges and is separated from an insulator plate (1) which is approximately 0.6 mm - 1 mm thick and made of ceramic. The potential barrier (3) can be a corona ring, a metal clip, a corona cap or a spring strip.