Method for producing an electronic assembly, and electronic assembly, in particular for a transmission control module

Abstract

The invention relates to a method for producing an electronic assembly (5), in particular for a transmission control module, having the following steps: providing a printed circuit board (10) with a first face (12) and a second face (14) facing away from the first face (12) and with at least one first electronic component (70) arranged on the first face (12) of the printed circuit board (10); arranging the printed circuit board (10) such that the second face (14) lies at least partly on a reference surface (40); applying a sealing material (50) which is substantially not flowable prior to being cured onto the first face (12), said sealing material (50) being applied such that the sealing material (50) surrounds a sub-region (20) of the first face (12) of the printed circuit board (10); arranging a second component (80) at least partly on the reference surface (40) such that the second component (80) is at least partly pressed into the sealing material (50); electrically connecting thesecond component (80) to the printed circuit board (10) by means of an electric connection line (85); applying a covering material (60), in particular a covering material (60) which is flowable priorto being cured, onto the printed circuit board (10) first face (12) sub-region (20) surrounded by the sealing material (50) and onto the first component (70); curing the sealing material (50); and curing the covering material (60).

Description

technical field [0001] The invention relates to a method for producing an electronic assembly, in particular for a transmission control module, and an electronic assembly, in particular for a transmission control module. Background technique [0002] Various electronic assemblies are known. The electronic assembly must be sealed against oil, for example if it is part of a transmission control module, since the transmission control module is in an oil environment. The electronic assembly typically includes a printed circuit board having electronic devices disposed thereon. [0003] Larger individual components, such as sensors, are partially not arranged on the printed circuit board, but are electrically connected to the printed circuit board. Since the oil often contains electrically conductive particles, electrical insulation is necessary both for the components and for the electrical connections between large individual components that are not (completely) arranged on th...

AI Technical Summary

Problems solved by technology

[0004] Disadvantages in this regard are the transmission control module with electronic components or the electronic components are not so stable or robust and have high production costs and high production expenditures

In addition, often mechanical stresses can occur between the large individual components and the printed circuit board, as a result of which the service life or tightness of the gearbox control module or electronic components is reduced

Furthermore, often due to the thickness tolerances of the printed circuit boards it is possible to place the electronic components only very imprecisely in height, which can cause problems especially in the case of sensors

Images