Power transistor module

US4639759A · kind A · utility

Assignee

• Brown, Boveri & Cie AG · DE

Inventors

• Arno Neidig · Plankstadt, DE
• Bernd Leukel · Weinheim, DE
• Lutz Bergmann · Ehringshausen, DE

Key dates

• Filing date: Nov 10, 1983
• Grant date: Jan 27, 1987
• Expiry date: Nov 10, 2003

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2924/0002
• WIPO field: Semiconductors
• WIPO sector: Electrical engineering

Abstract

A power transistor module includes a housing having a frame forming a housing wall and a ceramic plate fastened to the frame forming a housing bottom, structured metallizations disposed on the ceramic plate forming conductor runs and terminal pads, components including at least one power transistor and a bypass diode connected to the terminal pads, wiring elements being connected to the components and being freely accessible from the top of the housing, the wiring elements including an auxiliary collector terminal, and an auxiliary diode connected between the auxiliary collector terminal and the collector electrode of the power transistor.