Method for manufacturing of a hybrid component carrier (100, 200) comprising: providing a first layer structure having at least one electrically insulating layer and at least one electrically conductive layer; and forming of a second layer structure on the first layer structure by building up the second layer structure layerwise on the first layer structure, wherein the second layer structure comprises at least a first layer and a second layer, one of which is electrically conductive and the other electrically insulating, said first layer or said second layer comprises reinforcing spheres, wherein the first layer structure has a first density of electrically conductive elements, and wherein the second layer structure has a second density of electrically conductive elements, wherein the second density of electrically conductive elements is larger than the first density of electrically conductive elements, and wherein the forming of the second layer structure on the first layer structure comprises: forming the first layer of the second layer structure on the first layer structure; and subsequently forming the second layer of the second layer structure on the first layer of the second layer structure, wherein the first density of electrically conductive elements and the second density of electrically conductive elements is defined by the number of electrically conductive elements per unit of volume, characterized by forming a cavity in the second layer structure; and providing an active component (130, 170) in the cavity and by the fact that the reinforcing spheres are at least in an amount of 1 wt-%, and that said reinforcing spheres have a diameter of not more than 1 micrometer. providing a first layer structure having at least one electrically insulating layer and at least one electrically conductive layer; and forming of a second layer structure on the first layer structure by building up the second layer structure layerwise on the first layer structure, wherein the second layer structure comprises at least a first layer and a second layer, one of which is electrically conductive and the other electrically insulating, said first layer or said second layer comprises reinforcing spheres, wherein the first layer structure has a first density of electrically conductive elements, and wherein the second layer structure has a second density of electrically conductive elements, wherein the second density of electrically conductive elements is larger than the first density of electrically conductive elements, and wherein the forming of the second layer structure on the first layer structure comprises: forming the first layer of the second layer structure on the first layer structure; and subsequently forming the second layer of the second layer structure on the first layer of the second layer structure, wherein the first density of electrically conductive elements and the second density of electrically conductive elements is defined by the number of electrically conductive elements per unit of volume, wherein the second layer structure comprises at least a first layer and a second layer, one of which is electrically conductive and the other electrically insulating, said first layer or said second layer comprises reinforcing spheres, wherein the first layer structure has a first density of electrically conductive elements, and wherein the second layer structure has a second density of electrically conductive elements, wherein the second density of electrically conductive elements is larger than the first density of electrically conductive elements, and wherein the forming of the second layer structure on the first layer structure comprises: forming the first layer of the second layer structure on the first layer structure; and subsequently forming the second layer of the second layer structure on the first layer of the second layer structure, wherein the first density of electrically conductive elements and the second density of electrically conductive elements is defined by the number of electrically conductive elements per unit of volume, forming the first layer of the second layer structure on the first layer structure; and subsequently forming the second layer of the second layer structure on the first layer of the second layer structure, wherein the first density of electrically conductive elements and the second density of electrically conductive elements is defined by the number of electrically conductive elements per unit of volume, forming a cavity in the second layer structure; and providing an active component (130, 170) in the cavity and by the fact that the reinforcing spheres are at least in an amount of 1 wt-%, and that said reinforcing spheres have a diameter of not more than 1 micrometer.