Surface acoustic wave device and method that prevents restoration of a pyroelectric effect
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United States of America Patent
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Sep 16, 2008
Grant Date -
Aug 3, 2006
app pub date -
Feb 16, 2005
filing date -
Mar 18, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A surface acoustic wave device includes a piezoelectric substrate that does not restore the pyroelectric effect, and a method for manufacturing the same. A surface acoustic wave element housed in a package includes a piezoelectric substrate having a specific resistance in the range of about 1.0.times.10.sup.7 .OMEGA.cm to about 1.0.times.10.sup.13 .OMEGA.cm. Pads are electrically connected to an external electrode with a solder. The space between the package and a cap of the package is sealed with a sealing material. At least one of the solder and the sealing material has a melting point of about 300.degree. C. or less.
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