PRODUCTION ENGINEERING MEASURE. MECHANIZATION FOR .4 WATT DIODES AND 2N560 2N1051 2N1072 2N1195 TRANSISTORS, PHASE 2.
Abstract
27 OPERATIONS WERE MECHANIZED IN Phase 1, and 21 have been refined and updated. Most modifications were directed toward improving machine repeatability and reliability. Changes in machine concept produced extensive changes on the wafering, the painting and coating, and the assembling case to stud and welding operations. Less prominent changes to the Collector Lead to Platform Welding machine has also altered the machine concept. A Tip Welding and Lead Trimming machine has overcome a header production problem, and, at the same time, mechanized the glassing mold unload and lead trimming operation. A Data Producing Test Set for diodes automatically tests and records the test results on punched cards for computer processing. This machine is primarily used during final inspection for sample testing of the diodes. An important concomitant of Phase 2 activity has been the identification of a major 'Purple Plague' factor. The results of this investigation have given positive evidence that thick aluminum contacts increase the vulnerability of bonded gold wire to 'Purple Plague'.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1964
- Accession Number
- AD0615537
Entities
People
- M. N. Reppert