Accession Number : ADA311113

Title :   Plastic Encapsulated Microcircuit Reliability and Cost Effectiveness Study.

Descriptive Note : Technical rept. Feb 95-Mar 96,

Corporate Author : ARMY RESEARCH LAB FORT MONMOUTH NJ

Personal Author(s) : Emerson, Douglas ; Hakim, Edward ; Govind, Anand

PDF Url : ADA311113

Report Date : JUL 1996

Pagination or Media Count : 15

Abstract : This study evaluates the reliability and cost-effectiveness of using commercial plastic-encapsulated microcircuits (PEM) in a typical military system, with a view to increasing their acceptability in military applications. The cost comparison indicates an average 6-fold decrease in cost when commercial devices are used. Assurance testing did not reveal any special problems with commercial parts. Thus, if commercial PEM were proven to be sufficiently reliable for an intended military application, large cost savings would be gained by using them instead of hermetic packages. The 4.5 sigma enhanced inspection program and the process-control methods suggested here would enhance the manufacturing yield of the PLGR (precision lightweight global positioning system receiver) by encouraging improvements in the manufacturing process while simultaneously cutting the cost of a 100% rescreen to qualify the final product. Neither the requirements assurance tests (including the step-stress test-analyze-and-fix test), nor the reliability demonstration test, nor the operational test, showed more failures than are typical for any new development, and no problems unique to PEM were observed. Thus, the use of PEM did not lead to any special problems that caused PLGR-use specifications to be violated.

Descriptors :   *COST EFFECTIVENESS, *ENCAPSULATION, *PLASTICS, *MICROCIRCUITS, *RELIABILITY(ELECTRONICS), TEST AND EVALUATION, REQUIREMENTS, COMMERCE, MANUFACTURING, DEMONSTRATIONS, COMPARISON, TEST METHODS, OPERATIONAL EFFECTIVENESS, COSTS, INSPECTION, MILITARY APPLICATIONS, YIELD, COMMERCIAL EQUIPMENT, PACKAGING, PARTS, ACCEPTABILITY, HERMETIC SEALS.

Subject Categories : Economics and Cost Analysis
      Electrical and Electronic Equipment
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE