Sputtering cathode

A sputtering cathode with a flat plate-shaped target formed from at least one part comprising a tub-shaped yoke having a center ridge and a tub rim with end faces and being spaced apart from and behind a target, a plurality of magnets set into said yoke for generating an enclosed tunnel of arc-shaped curved field lines in a front surface of the target, having three sheet metal cutouts of magnetically conductive material inserted into a plane between the target and said end faces of the tub rim of the yoke facing the target, wherein two of these sheet metal cutouts cover an area above the end faces of the tub rim and the center ridge and the third sheet metal cutout, covers a part of an area between the end face of the center ridge and the end face of the tub rim, the sheet metal cutouts together forming two gaps extending essentially parallel to the end faces and the plurality of magnets are each incorporated or inserted into a bottom of the yoke, wherein side surfaces of the magnets facing towards and away from the target are flush with the yoke bottom wherein said plurality of magnets are incorporated or inserted into the bottom of the yoke, an additional plurality of permanent magnets is arranged on said end face of a peripheral edge part of the tub-shaped yoke which faces the target, wherein a height of the edge part together with the magnets corresponds to a height of the center ridge.