Patent ID: 8922099

Claim:
A piezoelectric device for mounting onto a printed substrate using solder, said piezoelectric device comprising: a piezoelectric vibrating piece having a pair of excitation electrodes; and a package base comprising a bottom surface having a pair of parallel long edges having a length, a pair of parallel short edges bisected by a longitudinal centerline, and only a single pair of mounting terminals situated on respective short edges of the bottom surface, the single pair of mounting terminals electrically connected to the pair of excitation electrodes and configured for mounting onto the printed substrate; wherein the single pair of mounting terminals are separated by a predetermined longitudinal distance between 6.25% and 12.5% of the length of said long edges, are symmetrical to and bisected by said longitudinal center line and are formed as close as possible in a longitudinal direction, said predetermined longitudinal distance is sufficient to prevent electrical short when mounting the piezoelectric device onto the printed substrate using solder applied to said single pair of mounting terminals, and a maximum width of each of said single pair of mounting terminals measured parallel with the short edges of the package base direction is less than one half of the width of the short edge of the package base.