Abstract: An electronic device includes an electronic component 2, 3, such as a SAW (=Surface Acoustic Wave) filter 2, 3 having connection areas 4, 5. The filter 2, 3 is sealed off from the environment by means of a cover 6 forming a cavity 7 above the filter 2, 3. According to the invention, the cover 6 is formed by a lacquer layer 6A which is provided, at the location of the filter 2, 3, with an opening 7′ and which is covered with a photoresist layer 6B closing the opening 7′ such that the cavity 7 thus formed has a thickness above zero everywhere above the filter 2, 3. This enables an accurate and stable frequency selection by means of the filter 2, 3 and allows the device according to the invention to be very compact and easy to manufacture. Thus, the device according to the invention is very suitable for use in an application such as a mobile telephone, also after integration of the device with a semiconductor device.