649
Electronic Engineering and Information Science – Wang (Ed.)
© 2015 Taylor & Francis Group, London, ISBN: 978-1-138-02772-5
Research on performance degradation of SnO
2
gas sensor based on
accelerated test
J.H. Yuan, Z.M. Su, B. Niu & Z. Zhou
Harbin University of Science & Technology, Harbin, China
ABSTRACT: Performance degradation of the SnO
2
gas sensor is studied in this paper. Accelerate degrada-
tion model is established in voltage as the accelerated stress. Constant stress accelerated degradation testing is
designed and executed. The life of the SnO
2
gas sensor under the normal stress level is obtained.
KEYWORDS: Performance degradation, Gas sensor, Accelerated test.
1 INTRODUCTION
The SnO
2
gas sensor has features of high sensitivity,