Investigation of low-temperature cofired ceramics packages for high-temperature SAW sensors

• Main Authors: J. Bardong, A. Binder, S. Toskov, G. Miskovic, G. Radosavljevic
• Format: Article
• Language: English
• Published: Copernicus Publications 2016-03-01
• Series: Journal of Sensors and Sensor Systems
• Online Access: http://www.j-sens-sens-syst.net/5/85/2016/jsss-5-85-2016.pdf

Surface acoustic wave (SAW) temperature sensor devices have been developed for operating temperatures up to and above 1000 °C. A challenging task to make these devices available on the market is to develop an appropriate housing concept. A concept based on low-temperature cofired ceramics (LTCC) has been investigated and tested under elevated temperatures up to 600 °C. The devices showed promising results up to 450 °C. Thorough analysis of the possible failure mechanisms was done to increase the maximum temperature above this limit in further production cycles.