Therefore, the so-called electromagnetic wave shield effect (shield effect) can be provided. [1113] Embodiment 31-32 [1114]FIG. 32 (a) is a sectional view showing a surface acoustic surface wave apparatus according to Embodiment 31. [1115] In this figure, a printed circuit board 1 is an insulating substrate such as ceramic, glass coated ceramic, glass-epoxy, or the like.