ELECTRICAL DEVICE, IN PARTICULAR MICROBATTERY, AND METHOD FOR THE PRODUCTION

An electrical device includes: a housing part made of a metal and including a feedthrough therethrough, an opening of the feedthrough, a first region, and a second region, the opening receiving a conductive material or a conductor in a glass material or a glass-ceramic material, wherein: (i) the conductive material has a first coefficient of expansion α, the glass material or the glass-ceramic material has a second coefficient of expansion α, and the housing part has a third coefficient of expansion α, the third coefficient of expansion αbeing always greater than the second coefficient of expansion α; or (ii) the first region including a width W that is substantially perpendicular to the axis of the at least one opening, the width W of the first region being always greater than a thickness Dand a thickness Dof the second region; or (iii) a combination of (i) and (ii).