INVITED SPEECH | ||
![]() | Rajan Ambat - Technical University of Denmark Interplay of humidity and electrical functionality imposing reliability problems in electronics | |
Abstract | ||
Electronic control units, power modules, and consumer electronics are used today in a wide variety of varying climatic conditions. Varying external climatic conditions of temperature and humidity can cause an uncontrolled local climate inside the device enclosure. Uncontrolled humidity together with number of other factors including the presence of hygroscopic contamination resulting from the PCBA manufacturing process can introduce deviation from desired functionality or even intermittent or permanent failure of the device. Additional factors are the miniaturization and high density packing combined with the use of several materials, which can undergo electrochemical corrosion in presence of water film formed due to humidity exposure and bias conditions on the PCBA surface. Aim of this paper is to show how the interplay between humidity (also transient changes in climate) and electrical functionality occurs, which cause several reliability issues on electronics due to electrochemical failure mechanisms. | ||
Biography | ||
Dr. Rajan Ambat is currently Professor of Corrosion and Surface Engineering at Department of Mechanical Engineering, Technical University of Denmark. He is also the Manager for the Centre for Electronic Corrosion (CELCORR)/CreCon Industrial Consortium on climatic reliability of electronics at DTU. Humidity related reliability issues of is a major research theme under CELCROR in close collaboration with a number of major European industries. Various research activities on climatic reliability include material, component, PCBA, and device level issues and mitigation methods. Presently he is the Chairman for the Working Party on Corrosion reliability of electronic devices under European Federation of Corrosion. He is part of the editorial board for various corrosion and electrochemistry journals and held visiting/Honorary professorship and other academic positions/responsibilities in many universities. |