Accession Number : AD0769901

Title :   Shock Resistant Quartz Crystal Units.

Descriptive Note : Final rept. 1 Jun 71-1 Jun 72,

Corporate Author : VALPEY-FISHER CORP HOPKINTON MASS

Personal Author(s) : Liggett,William T.

Report Date : MAR 1973

Pagination or Media Count : 112

Abstract : . 1 Jun 71-1 Jun 72,FLiggett,William T. ;DAAB07-71-C-0245PRON-C8-1-O4503-01-C8-CAECOM0245-F-71See also AD-737 307.(*Quartz, Reliability(Electronics)), (*Quartz resonators, Reliability(Electronics)), Shock resistance, High frequencyThe report covers testing of crystal units. The crystal units were manufactured to specifications for Type CR-64/U at 2.90000, 4.60000, 7.40000, 12.0000 and 20.0000 MHz. A complete data analysis indicated that the mounting of the crystal is the critical point in the fabrication of the units. Appropriate additions to the spring-blank bonding process is described. Furthermore, it was found that pre-aging the crystals was necessary to achieve the required stability. (Modified author abstract)

Descriptors :   (*Quartz, Reliability(Electronics)), (*Quartz resonators, Reliability(Electronics)), Shock resistance, High frequency

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE