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Influence of working conditions on over-voltage diode operation

M. VUJISIĆ1,* , P. OSMOKROVIĆ1, K. STANKOVIĆ1, B. LONČAR2

Affiliation

  1. Faculty of Electrical Engineering, University of Belgrade,Bulevar Kralja Aleksandra 73, 11120 Belgrade, Serbia
  2. Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11120 Belgrade, Serbia

Abstract

This paper investigates the influence of temperature variation, aging and radiation exposure on over-voltage diode operation. Behaviour of over-voltage diodes in the temperature range from –50ºC to +150ºC is examined. Aging is investigated by applying 1000 consecutive double exponential over-voltage pulses to the diode. Radiation effects of a combined neutron/gamma radiation field are analyzed. Volt-ampere characteristic, volt-ohm characteristic, and the value of breakdown voltage are used to characterize over-voltage diode operation, along with the nonlinear coefficient defined from the volt-ampere curve. Over-voltage diodes showed severe impairment of protective characteristics after being exposed to radiation or increased temperature, while on the other hand they proved to be highly resistive to aging. Theoretical interpretation of the observed changes in over-voltage diode behaviour is also provided in the paper..

Keywords

Over-voltage diodes, Aging, Radiation effects, Temperature.

Submitted at: May 28, 2007
Accepted at: Dec. 7, 2007

Citation

M. VUJISIĆ, P. OSMOKROVIĆ, K. STANKOVIĆ, B. LONČAR, Influence of working conditions on over-voltage diode operation, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 12, pp. 3881-3884 (2007)