Abstract: A power transistor cell includes an air bridge and a plurality of individual transistors. Each of the plurality of individual transistors has at least one separate connection contact. Each of the at least one separate connection contact of the plurality of individual transistors is thermally conductively connected to one another through the air bridge forming air bridge connections, which define a contact plane. A surface of the contact plane that contains each connection path between two of the air bridge connections defines a convex region. The air bridge is formed to have, in the contact plane, dimensions that exceed a smallest convex region containing all of the air bridge connections in all directions of the air bridge. Each of the plurality of power transistor cells can be respectively thermally conductively connected to one another through the air bridge to form a block of power transistor cells.