Patent ID: 7042133

Claim:
A surface acoustic wave device, comprising: a quartz plate cut out with a Euler angle at (0°, 113° to 135°, +/−(40 to 49)°); and a plurality of surface acoustic wave elements M 1 to Mn connected together in parallel on a main surface of the quartz plate, and provided with at least a pair of IDT electrodes to generate a Rayleigh wave, surface acoustic waves having at least a plurality of different propagation directions of propagation directions ψ1 to ψn being generated from the surface acoustic wave elements M 1 to Mn, and the propagation directions ψ1 to ψn satisfying a formula: ψ1 to ψn=0.3295θ+3.3318°+/−1.125°, with the Euler angle at (0°, θ, ψ).