| 摘要 |
PROBLEM TO BE SOLVED: To enhance the precision and the reliability of a crystal vibrator for surface mount by preventing external gas or dust from being adsorbed by a plane electrode of a crystal oscillation chip. SOLUTION: The crystal vibrator for surface mount employs the crystal oscillation chip 1 where an insulation film 4 is formed onto a plane electrode 2 among the plane electrode 2 and a side face electrode 3 that form electrodes. This crystal oscillation chip 1 is fixed to a plug by using solder or metallic paste for an adhesive and a case is covered to the plug to configure the crystal vibrator for surface mount.
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