The invention relates to a semiconductor device (10) consisting of a substrate (11) and a semiconductor body (2) comprising a strip-shaped semiconductor region (3,3A,3B) of silicon in which a field effect transistor is formed, wherein a source region (4) of a first conductivity type, a channel region (33) of a second conductivity type opposed to the first, and a drain region (5) of the first conductivity type are arranged in succession, successively, seen in the longitudinal direction of the strip-shaped semiconductor region (3,3A,3B), and wherein the channel region (33) is provided with a gate dielectric (6), on which a first gate electrode (7) is present on a first vertical side of the strip-shaped semiconductor region (3,3A,3B), which gate electrode (7) is provided with a first connection region (7A), and on which a second gate electrode (8) is present on a second vertical side of the strip-shaped semiconductor region (3,3A,3B) positioned opposite the first vertical side, which second gate electrode (8) is provided with a second connection region (8A). According to the invention the first and second gate electrodes (7,8) completely fill the space on either side of the strip-shaped semiconductor region (3,3A,3B) over the width of the connection regions (7A,8A). In a preferred embodiment the gate electrodes (7,8) each border a horizontal side of the strip-shaped semiconductor region (3,3A,3B). The device (10) according to the invention is very compact, suitable for the sub 45 nm domain and easy to manufacture.