Suppressing characteristics of TVS device under electromagnetic pulse

Transient voltage suppressor (TVS) device is the chief way by which the susceptibility to Electromagnetic pulse (EMP) of equipment can be decrease. Prior to each application, the TVS device has to be tested in order to evaluate its performances. In this paper, a new EMP protection performance testing system is designed and the Suppressing characteristics of four kinds of TVS device during EMP stressing, e.g., response time and clamping voltage are analyzed. It is concluded that, the clamping voltage is increasing with the augment of the injected pulse voltage; the response time is independent of the injected pulse voltage and the injected pulse width. These important conclusions are significant in improving the revolution of structure and technology of TVS device.