Degradation due to environments and its control methods in contacts for miniaturized electromagnetic relays

摘要

Markets of miniaturized electromagnetic relays are increasing even in the present when electronics devices have rapidly advanced. Keeping contact reliability as well as downsizing has a part of share in their increase also. In this paper, environmental problems in miniaturized relays are paid attention to, the following points are described: i) transition of contacts for electrical communication which are towed by environmental degradation, ii) formation mechanisms and their control methods of contact films which cause environmental degradation and so on.