
Proceedings Paper
Lifetime prediction in vacuum packaged MEMS provided with integrated getter filmFormat | Member Price | Non-Member Price |
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Paper Abstract
Thin-film getter integration is one of the key technologies enabling the development of a wide class of MEMS devices,
such as IR microbolometers and inertial sensors, where stringent vacuum requirements must be satisfied to achieve the
desired performances and preserve them for the entire lifetime. Despite its importance, the question about lifetime
prediction is still very difficult to answer in a reliable way. Here we present an experimental approach to the evaluation
of lifetime, based on an accelerated life test performed varying both the storage conditions and the getter area. A test
vehicle based on a resonator device was used. The hermeticity was evaluated by means of specific leak testing, while
MEMS behavior during the ageing test was studied monitoring device functional parameters and by residual gas analysis
(RGA). Unexpected results were observed leading to the discovery that methane is pumped by the getter below 100°C.
These results served as the inputs of a suitable model allowing extrapolating the device lifetime in operating? conditions,
and pointed out that RGA is an essential tool to correctly interpret the aging tests.
Paper Details
Date Published: 31 May 2012
PDF: 8 pages
Proc. SPIE 8353, Infrared Technology and Applications XXXVIII, 83533C (31 May 2012); doi: 10.1117/12.920566
Published in SPIE Proceedings Vol. 8353:
Infrared Technology and Applications XXXVIII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)
PDF: 8 pages
Proc. SPIE 8353, Infrared Technology and Applications XXXVIII, 83533C (31 May 2012); doi: 10.1117/12.920566
Show Author Affiliations
Fabrizio Siviero, SAES Getters S.p.A. (Italy)
Antonio Bonucci, SAES Getters S.p.A. (Italy)
Andrea Conte, SAES Getters S.p.A. (Italy)
Antonio Bonucci, SAES Getters S.p.A. (Italy)
Andrea Conte, SAES Getters S.p.A. (Italy)
Marco Moraja, SAES Getters S.p.A. (Italy)
Olivier Gigan, TRONICS Microsystems (France)
Isabelle Thomas, Thales Avionics S.A. (France)
Olivier Gigan, TRONICS Microsystems (France)
Isabelle Thomas, Thales Avionics S.A. (France)
Published in SPIE Proceedings Vol. 8353:
Infrared Technology and Applications XXXVIII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)
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