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Vol. 14-1, Special Issue, March 2012, pp.174-184




Design and Evaluation of Impedance Based Sensors for Micro-condensation Measurement under Field
and Climate Chamber Conditions


Geert Brokmann, Michael Hintz, Barbara March and Arndt Steinke

CiS Forschungsinstitut für Mikrosensorik und Photovoltaik GmbH

99099 Erfurt, Germany

E-mail: gbrokmann@cismst.de, mhintz@cismst.de, bmarch@cismst.de, asteinke@cismst.de



Received: 15 November 2011   /Accepted: 20 December 2011   /Published: 12 March 2012

Digital Sensors and Sensor Sysstems


Abstract: Condensation associated with the risk of electrochemical and chemical migration plays an increasing significance in the field of reliability of electronic components. The trends towards challenging electronic assembly technologies such as minimization of conductive track widths and spacing, and higher density in electric elements are increasingly faced with the negative influences of micro-condensation. The condensation occurs as a result of the thermodynamic conditions in the environment of the electronic board. The condensed water is in equilibrium of condensation and evaporation, not in a static state. Due to this fact, there is a demand for sensors to record the real state permanently. Due to its miniaturized packaging, a new generation of micro-condensation sensors allows placement on different parts of electronic devices. Results of field tests in different automobiles and in climate chambers are presented.


Keywords: Condensation, Humidity, Migration, Corrosion


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