SURFACE MOUNT TEMPERATURE COMPENSATION CRYSTAL OSCILLATOR

PROBLEM TO BE SOLVED: To provide a surface mount temperature compensation crystal oscillator in which the bonding reliability of the IC element is excellent, the entire structure of which can be small-sized, and the crystal vibrating element of which can easily be measured. SOLUTION: The surface mount temperature compensation crystal oscillator is constituted such that the rectangular IC element 7 for controlling an oscillation output on the basis of the vibration of the crystal vibrating element 5 is located on a lower suface of the rectangular package 1 inside of which the crystal vibrating element 5 is contained. Electrode pads 10 as a plurality of crystal electrode pads connected at least to the crystal vibrating element, oscillation output electrode pads connected to surface mount external terminals, ground electrode pads, power supply voltage electrode pads, oscillation control electrode pads, and a plurality of write control electrode pads are longitudinally and laterally located respectively in a layout region of the IC element 7, and the IC element 7 is electrically connected to the electrode pads 10. In particular, the crystal electrode pads 10d, 10f are located at an outermost circumferential region. COPYRIGHT: (C)2005,JPO&NCIPI