Cleaning Of Assembled PCS A Crucial Way of Enhancing Product Reliability and Avoiding Problems in the Field

摘要

Over the last years more and more International newspapers reported in Europe / USA and Japan: "Tunnel train got stuck under the Channel - thousands of people stranded " Recall of thousands of cars to workshops for control and repair Power Failures left households without energy for hours. Very often news like this relate to malfunctions of electric and electronic circuits under adverse conditions or sometimes even in normal operating environment. Considering that in the automotive industry - one of the most dynamic and innovative driving economic force in industrialized countries the number of complex electronic circuits will increase drastically over the next decade -ensuring reliability will become a focus in high- quality electronics production. Highly integrated circuitry and the permanent miniaturization makes high quality production more and more crucial. The reliability of such complex circuitry can be ensured using cleaning in all steps of the production process, from stencil cleaning to PCB cleaning prior to coating or painting in order to increase the reliability and life span of the units into which such circuitry will be installed. The use of environmentally friendly water based chemistries instead of ozone layer depleting VOC-containing solvents -once the standard in the electronics industry- as well as the use of respective machines that operate under the condition of saving energy and resources will gain more and more importance and cannot be neglected anymore. The presentation will deal with all kinds of aspect of cleaning to ensure the reliability of electronic circuitry in ever changing operation conditions in the most important industrial areas.