Alps Electric Co., Ltd.

Masahiro Aoki

Makoto Sasaki

Hirofumi Fukui

Hitoshi Kitagawa

A temperature-compensating thin-film capacitor includes a first dielectric thin-film having a specific inductive capacity of 4.0 or less and a linear thermal expansion coefficient of 50 ppm/&deg; C. or more, and includes a second thin-film capacitor having capacitance-temperature coefficient with an absolute value of 50 ppm/&deg; C. or less, in which the first and the second dielectric thin-films are placed between electrodes. The present thin-film capacitor design significantly reduces variations in capacitance due to manufacturing equipment tolerance. Also, miniaturization, thinning, and lightening of the thin-film capacitor is achieved. In another aspect of the invention, an electronic device having the temperature-compensating thin-film is provided. The temperature stability of the present thin-film capacitor is highly advantageous for incorporation into electronic devices such as a portable electronic device, microwave communication equipment.

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Miyagi-ken, Japan

Masahiro Aoki