Disclosed is a radiation curable ink containing a fluorescent material that upon exposure to activating energy fluoresces such that an image that was not visible prior to exposure to the activating energy becomes visible. Preferably the limb is aligned so that the centerline of the limb is aligned with the centerline of the riser. Chip designers can modify the layout design to minimize viacontact failures. In some embodiments, at least two electrodes are located adjacent to one another at the surface of the substrate. Processes for synthesizing the compounds are also described. Surfaces of the heat sinks opposite to the side of the power semiconductor elements are exposed from the mold part.