Patent ID: 6404100
Filing Date: 2002-06-11
Classification: H01L,H03H

Abstract:
A surface acoustic wave apparatus comprising:a surface acoustic wave element; a ceramic base having a mounting surface on which the surface acoustic wave element is mounted; a ceramic frame body joined to said ceramic base and having a side wall which surrounds, in a state of having a clearance, sides of said surface acoustic wave element mounted on the mounting surface; metallized wiring formed on said ceramic base and electrically connected to said surface acoustic wave element mounted on said mounting surface, said metallized wiring passing between said ceramic base and said frame body to a region outside said side wall; and a cap joined to the ceramic frame body opposite said ceramic base and covering said surface acoustic wave element, wherein a height of the side wall is set at about 50-280 &mgr;m lower than a highest part of said surface acoustic wave element mounted on said mounting surface, and a side portion of said surface acoustic wave element exposed over said side wall is configured to engage with a test device.