Robert Boschgmbh

Roland Gerstner

Ulrich Goebel

Walter Roethlingshoefer

Dietrich Bergfried

Josef Weber

Oliver Leibfried

Michael Krapp

Harun Bueyuekgoez

Walter Rothlingshofer

The invention relates to a circuit carrier () comprising a plurality of inorganic substrate layers () that have partial metallizations () for the purpose of electrical and/or thermal conduction, and to a corresponding method for producing such a circuit carrier (). According to the invention, at least one partial metallization is made in the form of an insert () that fills a corresponding shaped hole () introduced into one of said inorganic substrate layers ().

Circuit carrier and a method for producing a circuit carrier

A protective device against corrosion for an onboard electrical system, in particular thermal corrosion. The protective device includes at least one sensor for detecting a shunt and a switching device which is controllable by the sensor and outputs a switching pulse for the activation of a control unit upon control by the sensor. Also described is a method for the control of the onboard electrical system.

Protective device against corrosion for an onboard electrical system and method for the control thereof

A connection arrangement with PC board features a ceramic substrate glued to a base plate of metal, used as a cooling body. Islands have been hollowed out of the adhesive layer and are filled with thermally conductive paste. Particularly effective thermal dissipation is possible in the area of the islands filled with thermally conductive paste, so that the islands are always disposed underneath components with great energy or heat dissipation.

Connection arrangement with PC board

A method for mounting Surface-Mounted-Devices ('SMD's') on a substrate, e.g. a PC board, involves warming an adhesive containing conductive particles from a room-temperature solid state to a warmed fluid state, applying said fluid adhesive to the substrate, permitting the adhesive to cool back into a solid state, subsequently warming the substrate and adhesive to render the adhesive tacky and yielding, mounting the components (2-5) in the tacky adhesive, and permitting the adhesive to cool back into a solid state, thereby securing the components on the substrate.

Method of securing surface-mounted devices to a substrate

An electrical circuit unit, particularly for motor vehicles, features a grounded housing (1) and a printed circuit board (2) which, for protection against incoming and outgoing radiation of electrical noise, is short-circuited at high frequencies to the grounded housing. For this purpose, a noise suppression capacitor (6) on the PC board (2) is connected in series to a second capacitor. This second capacitor is formed by a metallized surface (8) on the board (2) and a metal-filled adhesive, as a first plate, a metal inner surface (11) of the housing (1) as a second plate, and an intermediate passivation or eloxal layer serving as a dielectric (13). The metal-filled adhesive acts to electrically bridge most of the gap between the metallized surface (8) and the housing surface (11), thereby capacitively coupling the metal-filled adhesive to the housing (1) and increasing the capacitance.

Growing community of inventors

Reutlingen, Germany

Roland Gerstner