| 摘要 |
PROBLEM TO BE SOLVED: To provide a crystal oscillator capable of reducing short-circuit between an external terminal and a thermo-sensitive element.SOLUTION: A crystal oscillator includes: a rectangular substrate 110a; a mounting frame body 160 provided on a lower surface of the substrate 110a; a joint terminal 112 provided along an outer peripheral edge of the lower surface of the substrate 110; a joint pad 161 provided along an outer peripheral edge of an upper surface of the mounting frame body 160; a pair of electrode pads 111 provided on an upper surface of the substrate 110a; a pair of connection pads 115 provided on the lower surface of the substrate 110a in the mounting frame body 160; a crystal element 120 mounted on the electrode pad 111; a thermo-sensitive element 150 mounted on the connection pad 115; a gap portion H provided between the substrate 110a and the mounting frame body 160; a lid 130 for hermetically sealing the crystal element 120; and an insulating resin 180 which covers the thermo-sensitive element 150 and is provided on the gap portion H.SELECTED DRAWING: Figure 2 |
