Accession Number : AD0645713

Title :   QUARTZ CRYSTAL UNIT, TYPE CR-67/U AND CR-(XM-67)/U PRODUCTION ENGINEERING MEASURE.

Descriptive Note : Quarterly progress rept. no. 2, 25 May-25 Aug 66,

Corporate Author : GENERAL ELECTRIC CO LYNCHBURG VA COMMUNICATION PRODUCTS DEPT

Personal Author(s) : Hatcher,R. L. ; Hoyt,H. K. ; Laney,R. D.

Report Date : 25 AUG 1966

Pagination or Media Count : 25

Abstract : The aging study on bonding compounds is scheduled for a maximum of 1000 hours or until a definite trend is established. At this point (approximately 18 days) it appears that good and poor aging is apparent in both the 'control' and 'test' groups. It is also apparent that units tend to be either good or poor from the start of the tests. This would indicate that the reason for the poor aging is due primarily to variations in the processing rather than the bonding materials. With this in mind a careful study will be made to determine the cause of apparent catastrophic and degradational failures from a study of physical variations in the crystal and mounting structure. (Author)

Descriptors :   (*QUARTZ RESONATORS, MANUFACTURING), RELIABILITY(ELECTRONICS), AGING(MATERIALS), ADHESIVES, BONDING, CRYSTAL HOLDERS, QUARTZ, FAILURE(ELECTRONICS)

Subject Categories : Electrical and Electronic Equipment
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE