Robert Boschgmbh

Thomas Suenner

Michele Hirsch

Boris Adam

Andreas Schoenknecht

Denis Gugel

Peter Sinn

Thomas Kaden

Frank Wehrmann

Erik Sueske

Alexander Kaiser

Paeivi Lehtonen

Tim Behrens

Juergen Zipprich

Christian Schiele

Andreas Krutsch

Daniel Michels

Christian Kluthe

Reiner Hemmert

Irfan Aydogmus

Oliver Messner

Alexander Lemm

Vince Kovacs

A composite assembly of three stacked joining partners, and a corresponding method. The three stacked joining partners are materially bonded to one another by an upper solder layer and a lower solder layer. An upper joining partner and a lower joining partner are fixed in their height and have a specified distance from one another. The upper solder layer is fashioned from a first solder agent, having a first melt temperature, between the upper joining partner and a middle joining partner. The second solder layer is fashioned from a second solder agent, having a higher, second melt temperature, between the middle joining partner and the lower joining partner. The upper joining partner has an upwardly open solder compensating opening filled with the first solder agent, from which, to fill the gap between the upper joining partner and the middle joining partner, the first solder agent subsequently flows into the gap.

Composite assembly of three stacked joining partners

An electronic assembly includes a leadframe (), a semiconductor component (), and an electrically conductive connecting element () made of a composite material (). The connecting element () has a solderable metallization () on the composite material () on a surface that is directed towards the semiconductor component (). A thermal conductivity of the composite material () of the connecting element () is greater than a thermal conductivity of the semiconductor component () and less than a thermal conductivity of the leadframe (). The connecting element () is provided only locally in the region of the semiconductor component ().

Electronic assembly with improved thermal management

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Stuttgart, Germany

Thomas Suenner