A header, with improved cooling for electronic components for radio frequency signal transmission, for an electronic component for radio frequency data transfer, includes: a metallic base body including a plurality of electrical feedthroughs; a thermoelectric cooling element having one side bearing on the base body and an opposite side for mounting the electronic component; a radio frequency line to the electronic component being on the side for mounting the electronic component, with a ground conductor that is electrically connected to the metallic base body, the electrical connection to the metallic base body including a telluride element.