PURPOSE: To obtain a composite electronic components such as a resistor- capacitor, a resistor-inductor and a resistor-capacitor-inductor, etc., by forming a capacitor on an insulating substrate and providing a resistor and a thin film capacitor on the insulating substrate.

CONSTITUTION: A capacitor is produced by providing a lower electrode 1 at the rear surface of an insulated substrate 2 formed of a dielectric material and then forming an upper electrode 3 in the area depending on the capacitance of the capacitor. Moreover, a thin film resistor 4, a thin film inductor 5 are produced simultaneously on the same surface of the insulated substrate to form composite electronic components such as a resistor-capacitor, a resistor-thin film inductor, a resistor-thin film inductor-capacitor, etc., in view of reducing the number of electronic components to be mounted and also reducing a mounting time.