Long term behavior of passive components for high temperature applications-an update

Advances in SOI IC technology and the development of wide band gap semiconductors such as SiC are enabling practical deployment of high temperature electronics. While ICs are key to the realization of complete high temperature electronic systems, passive components including resistors, capacitors, magnetics and crystals are also required. This paper presents a representative cross-section of high temperature passive component characterization data with an emphasis on long term drift behavior. The goal of this study was to accumulate of the order of 5000 hours of long term parametric drift data at 200/spl deg/C on a large variety of carefully selected, commercially available passive component technologies. Device types represented include both small signal and power resistors and capacitors, and some results obtained from a study of crystals for use in oscillators designed to operate in extended temperature applications from -55/spl deg/C to 200/spl deg/C. Specific problems encountered with the use of these devices in harsh environments are discussed for each family of components.