Unter hoher Spannung funktionierende Hybridschaltung.

摘要

The invention relates to hybrid circuits functioning under high voltage: they are most often power circuits. A hybrid power circuit comprises, protected by a housing (1), at least one chip carrier: that is to say a substrate (3) on which is soldered at least one component (4) surrounded by contact-making metallisations (7, 8, 9). In order to avoid voltage breakdown, the chip carrier is protected locally by two resins: an outer barrier (13) made of a viscous resin and within which is cast a coating (14) made of a resin which is fluid before polymerisation. The protection reserves test regions (15, 16, 17) on the metallisations (7, 8, 9). The off-protection interconnections may be covered with an insulator by silk-screen printing. Application to power circuits composed of several chip carriers soldered into a housing.