Tech Tutorial: Choose the correct capacitors for reliable automotive applications
While not as glamorous as microprocessors or DSPs, passives, such as capacitors, must still have reliability for auto use
By Dave Richardson, Vishay Intertechnology
Automotive DesignLine
(07/07/2006 4:09 PM EDT)
While not as glamorous as microprocessors or DSPs, passives, such as capacitors, must still have reliability for auto use
By Dave Richardson, Vishay Intertechnology
Automotive DesignLine
(07/07/2006 4:09 PM EDT)
Selecting the most reliable capacitors for today's automotive electronics requires the design engineer to examine a number of different device parameters and performance characteristics. The next step is to consider the automotive environment in which the electronics will be used and the specific applications for which they are intended. Here is a look at the characteristics of the four major dielectric types of capacitors-tantalum, aluminum electrolytics, poly-films, and ceramic; an explanation of the concepts of temperature and voltage coefficients of capacitance; and how these and other factors affect the choice of capacitor for a given application.
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