Telecom- and Signal-Relays with Gastight Plastic Sealed Housings for Enhanced Relay Performance

Werner JOHLER  

IEICE TRANSACTIONS on Electronics   Vol.E86-C   No.6   pp.953-962
Publication Date: 2003/06/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Recent Development of Electro-Mechanical Devices (IS-EMD 2002))
Category: Devices
telecom- and signal relays,  sealing,  material transfer,  dielectric performance,  

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Telecom- and Signal Relays with gastight plastic sealed housings enables the usage of inert and highly insulating gases. Although plastic sealed housings are used, optimized designs can keep the gas during the entire life of more than 25 years. The application of this technology allows the application of highly insulting gases like SF6 and result in a significant reduction of the relay size as reduced physical dimensions can be applied. With unchanged distances a significantly better dielectric performance can be achieved, without a relevant cost increase. Furthermore the inert switching atmosphere increases the switching characteristics or reduces the consumption of precious metals for the contacts. Even the usage of less precious metals like tungsten or ruthenium might be possible for switching typical telecommunication signals.