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Reliability of X7R Multilayer Ceramic Capacitors During High Accelerated Life Testing (HALT)

Hernández-López, Ana Maria and Aguilar-Garib, Juan and Guillemet, Sophie and Nava Quintero, Román Jabir and Dufour, Pascal and Tenailleau, Christophe and Durand, Bernard and Valdez-Nava, Zarel Reliability of X7R Multilayer Ceramic Capacitors During High Accelerated Life Testing (HALT). (2018) Materials, 11 (10). 1900. ISSN 1996-1944

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Official URL: https://doi.org/10.3390/ma11101900

Abstract

Multilayer ceramic capacitors (MLCC) are essential components for determining the reliability of electronic components in terms of time to failure. It is known that the reliability of MLCCs depends on their composition, processing, and operating conditions. In this present work, we analyzed the lifetime of three similar X7R type MLCCs based on BaTiO3 by conducting High Accelerated Life Tests (HALT) at temperatures up to 200 °C at 400 V and 600 V. The results were adjusted to an Arrhenius equation, which is a function of the activation energy (Ea) and a voltage stress exponent (n), in order to predict their time to failure. The values of Ea are in the range of 1–1.45 eV, which has been reported for the thermal failure and dielectric wear out of BaTiO3-based dielectric capacitors. The stress voltage exponent value was in the range of 4–5. Although the Ea can be associated with a failure mechanism, n only gives an indication of the effect of voltage in the tests. It was possible to associate those values with each type of tested MLCC so that their expected life could be estimated in the range of 400–600 V

Item Type:Article
HAL Id:hal-02327989
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Kemet (MEXICO)
Other partners > Universidad Autónoma de Nuevo León - UANL (MEXICO)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
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Deposited On:23 Oct 2019 07:28

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