{"title":"Limits of high density, low-force pressure contacts","authors":"J. Beale, R. Pease","doi":"10.1109/IEMT.1993.398210","DOIUrl":null,"url":null,"abstract":"The prosaic pressure contact is a source of unreliability not only in completed systems but more seriously in testing of ICs prior to packaging. Using a custom-built apparatus, pressure contacts are characterized with applied forces down to a few nN and contact areas down to 10/sup -11/ cm/sup 2/. Nominally clean gold-gold and iridium-gold contacts in air exhibit resistivities higher than that predicted from a simple model based on the plastic deformation of the gold. Interfacial films appear to be a source of unreliability. The surface film on gold in air appears to disrupt conduction to a similar degree.<<ETX>>","PeriodicalId":206206,"journal":{"name":"Proceedings of 15th IEEE/CHMT International Electronic Manufacturing Technology Symposium","volume":"37 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1993-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of 15th IEEE/CHMT International Electronic Manufacturing Technology Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IEMT.1993.398210","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 11
Abstract
The prosaic pressure contact is a source of unreliability not only in completed systems but more seriously in testing of ICs prior to packaging. Using a custom-built apparatus, pressure contacts are characterized with applied forces down to a few nN and contact areas down to 10/sup -11/ cm/sup 2/. Nominally clean gold-gold and iridium-gold contacts in air exhibit resistivities higher than that predicted from a simple model based on the plastic deformation of the gold. Interfacial films appear to be a source of unreliability. The surface film on gold in air appears to disrupt conduction to a similar degree.<>
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