Fail safe ceramic capacitor for automotive applications

July 05, 2011 // By Christoph Hammerschmidt
Passive component manufacturer Murata has launched a new series of monolithic ceramic capacitors that are less prone to failure due to mechanical stress. The GCD series features a soft termination of the capacitive element. Thus, the mechanical stress induced by board flexing or a wide variation of temperature is less likely to cause the capacitor body to crack.

The soft termination is achieved by using a conductive resin for the terminations. This increases the body's ability to absorb such stress. In addition, by using a multi-layer serial capacitor (MLSC) approach to the construction, the GCE series will not easily short-circuit either. This technique uses an internal “floating” plate that creates an equivalent circuit of two capacitors in series. In this way, a short circuit condition is highly unlikely to happen due to component failure. This makes the GCE series ideal for a broad range of automotive applications where safety is crucial.

The GCE series is available in 0603 and 0805 sizes, covering all nominal working voltages in the range 50 to 100 V with the popular capacitance values of 10, 22, 47 and 100 nF.

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