3-20
Base
Mounting
clips
Bonding
 area
Electrodes
Quartz
blank
Cover
Seal
Pins
Quartz
blank
Bonding
area
Cover
Mounting
clips
Seal
Base
Pins
Two-point Mount Package
Three- and Four-point Mount Package
Top view of cover
Resonator Packaging
   The above illustration shows the typical packages used for AT-cut and SC-cut resonators. Such packages are available in both metal and glass constructions.   Other package types include surface mount, ceramic and metal flatpacks, and the cylindrical metal packages used for tuning fork resonators - see “Watch Crystal” later in this chapter.


J. A. Kusters, “Resonator and Device Technology," in E. A. Gerber and A. Ballato, Precision Frequency Control, Vol. 1, pp.161-183,  Academic Press, 1985.