the slot is arranged in such a way that in each case approximately the same phase of the oscillation which is triggered by the electronic component passes to the slot that is over the entire length as a result the oscillation is suppressed particularly efficiently an example of the shape of an electronic component for example of a typical surface mounted ceramic capacitor is a component with a rectangular base area i e with two long and two short side walls the slot can run parallel to the short side wall or the long side wall and is then naturally a straight line in a preferred embodiment at least one of the slots which runs parallel to a side wall of the electronic component is longer than the side wall the slot thus protrudes beyond the width of the side wall on at least one side preferably on both sides expedient are in the case of a slot which is 50 u03bcm to 2 mm wide values of up to 1 mm or moreover up to 2 mm for the amount by which the slot is longer than the side wall in addition to the abovementioned surface mounted ceramic capacitor the electronic component may be a ferrite magnet coil the invention can be used on all electronic components which could trigger oscillations and transmit them to the printed circuit board during operation i e when a current is flowing through them or when a voltage is applied a preferred embodiment of the invention will be described below with reference to the drawing.